• Category Archives Electronic Enineering
  • Three phase electricity meter

    front side of de meter
    Fig 1: Three phase electricity monitor
    back side of the meter
    Fig 2: Back side of the meter
    Meter back side
    Fig 3: Back side of the meter
    Front side of de meterFig 4: Front side of de meter


    Electricity meters exist in various types and sizes. This meter in particular is a three phase monitor intended to measure various electrical parameters on three phases simultaneously. This meter is for industrial use as wel for houses which have a three phase electricity network.
    This outstanding three phase electricity monitor has a large display, programmable parameters for alarm levels, Current transformer ratios, Voltage ratios and much more.


    This meter is useful for any one connected to the electricity grid who want to know more about their electricity consumption and quality of electricity. The meter can al be used for system installer who want to upgrade their products with extra information regarding electricity consumption. Some examples of applications are:

    • Three phase Motors
    • Air Conditioning installations
    • factory plants
    • Hotels
    • Shops


    We offer the following services:

    • Sales of power meters
    • Installation and integration of power meters
    • Instrument panels with meters, switches, fuses, and outlets
    • Software development for specific power meter functions.
    • Presentation and demonstration of digital meters in general

    How to order

    This meter is available. You can order it by activating the following email address link, fill in the form and send this email to: info@holamex.nl , the form is all predefined. You can also order by activating the “comment” button at the top of this page and send a request with the message that you want to buy this meter and fill in the contact details field.

    Costs of the meter

    Service Price
    1 Standard meter $1690,-
    3 Current transformers 3x $750,-
    3 Voltage transformers 3x $ Quote,-
    3 Installation work $1200,-
    3 Non standard meter solution $ Quote,-

  • Medidor de electricidad inteligente para los hogares mexicanos.

    TTS: Puedes escuchar esta pagina

    E-Meter front face Fig 1 : El medidor tal como es.
    E-Meter side face Fig 2 : El medidor desde un lado.
    The total package Fig 3 : El paquete


    Si lo que necesitas es conocer la cantidad de electricidad que es utilizada, o qué tan estable es su red de electricidad, este medidor es la solución. Con este medidor inteligente no tendrá más preguntas acerca de qué y cuánto electricidad que consume.
    Este medidor es inteligente porque le dice cuatro cosas por el precio de uno. Le dice su:

    • Uso de electricidad (kWh).
    • Energía eléctrica (W).
    • Voltaje (V).
    • Corriente (A).

    Hecho por HOLaMEX y “culumus de Ideas”.

    TEste producto ha sido desarrollado en cooperación con HolaMex y Culumus. Holamex es una empresa holandesa-mexicana especializada en soluciones inteligentes de energía para los hogares y la industria. Cumulus es un buró de diseño gráfico ubicado en Querétaro (El Pueblito) y es responsable del estilismo producto.

    Ambas compañías colaboraron y desarrollaron un producto que da a la gente en México más control sobre su gasto de electricidad. En donde todos salen ganandoLo que obtiene y que es el costo.

    What you get and what it Costs.

    • El medidor
    • Un manual de instalación y de usuario.
    • Los materiales de instalación.

    No se necesitan materiales adicionales para instalar aparte de un taladro y un destornillador. Todo está empaquetado en una caja de cartón fuerte.

    Como ordenar

    Este medidor está disponible en volúmenes limitados. Puede pedirlo enviando un correo electrónico en: info@holamex.nl usando su programa de correo electrónico de Outlook u otro o Activando el botón “comentario” en la parte superior de esta página y enviar una solicitud para comprar un metro.

  • Smart electricity meter for Mexican homes

    TTS: this page can be listened to

    E-Meter front face Fig 1 : The meter as it is.
    E-Meter side face Fig 2 : The meter from a side.
    The total package Fig 3 : The package


    If you need to know how much electricity you use or how stable your electricity network is this meter is the solution. With this smart meter you have no more questions about what and how much electricity you use.

    This meter is smart because it tells you four things all at ones for the price of one. It tells you your:

    • Electricity use (KWh).
    • Electric Power(W).
    • Voltage(V).
    • Current(A).

    Made by HOLaMEX and “Culumus de Ideas”.

    This product is developed in cooperation with HolaMex and Cumulus. Holamex is a Dutch-Mexican company specialized in smart energy solutions for homes and industry. Cumulus is a graphic design buro located in Queretaro (El Pueblito) and is responsible for product styling.

    Both companies have put hands together and developed a product which gives people in Mexico more control over their electricity spending’s. This makes it a win win for everybody.

    What you get and what it Costs.

    This meter is for sale in limited volumes for the price of $750 mexican pesos.
    for this price you get :

    • The meter
    • An installation and user manual.
    • Installation materials.

    No extra materials are needed to install other than a drill and a screwdriver. Everything is packed in a strong carton box.

    How to order.

    This meter is available in limited volumes. You can order it by sending an email to: info@holamex.nl using your email program outlook or something else or by activating the “comment” button at the top of this page and send a request with the message to buy a meter.

  • Solar panel installations and their real efficiencies.

    Solar panels are sold in powers of 250…310Watt but what do they offer in real operational conditions. You can also say what can we expect of our solar installations in real life. Solar is applied in two basic configurations and each of these have their own losses. The two most know configurations are:

    Availability Fig 1 : Typical roof installation of a GT Solar installation
    • Grid Tied installations (GT)
    • Off The Grid Installations(OG).

    The losses in these two configurations are divided in three groups. These groups are:

    GT installations:

    • PV Panel loss due to cell temperature.
    • Loss due to DC/AC conversion or inverter losses.
    • Loss due to transport, Soiling, shading, panel aging and more.

    OG installations:

    • PV Panel loss due to cell temperature.
    • Loss due to DC/AC conversion or inverter losses & battery storage and discharge
    • Loss due to transport, Soiling, shading, panel aging and more .
    Availability Fig 2 : Effect of temperature on cell performance

    As you can see the difference between the two configurations is the loss due to the use of battery storage.

    The next post I will describe the losses for these two applications. All losses can be calculated using formulas. Were possible it is explained . The calculations for panel loss is left out of the scope of this paper.

    PV Panel loss due to cell temperature:

    A panels is constructed with cells in a array and each cell has an efficiency that goes down with the temperature going up. How much it goes down per °C is determent by a PV power Temperature Coefficient TCpmax which is around 0.47%/°C
    The Cell temperature of a panel goes up as soon it receives Solar radiation in order to produce electricity. Temperatures of 55°C at 1000Watt/m2 irradiation and higher are not unusual. This means under these conditions our panel performance is not 100% as it is sold for but has reduced to 86% (sorry it is not just multiplying Temp x TCpmax). The operational panel performance at 1000watt/m2 irradiation is around 86% of the performance its sold for.

    Loss due to DC/AC conversion or inverter losses:

    Availability Fig 3 : Open DCAC inverter open model explained.

    An DC/AC inverter exist out of two stages. Stage one is a boost stage that pumps up the panel voltage of say 40V to the needed AC line RMS voltage multiplied by the root or 2 which is 1.41. That product is the peak voltage needed to produce an AC signal with an RMS equal to your line RMS value. In Europe this voltage is 230Volt (Peak=325V) and in the Americas it is around 120V Peak=170V.

    The second stage in a DC/AC inverter is what is called a “H MOSFET bridge” that inverts the boosted signal from the first stage in to a Sine wave Pulse Width Modulated (S-PWM) signal which goes though a passive LC filter. Belief it or not but a S-PWM signal at the input of a LC filter make a 230/50hz or 120V/60Hz sine wave coming out, it’s like magic.

    These two stages count for a loss between 90…97%. For this exercise we use 95%, most DC/AC inverters have figures like this. keep in mind  but only for their peak efficiencies, the average is often lower.

    Loss due to battery storage and discharge.

    Availability Fig 4 : Voltage efficiency of a lead acid battery

    To charge a battery requires more energy than you can get out of it during the discharge stage. The quotient of the output and input energy is called the efficiency of a battery. Two effects influence this efficiency and they are called the coulomb and voltage efficiency.

    The current or charge (I*t=C)that you put in a battery is not the same charge that you can get out of it. The quotient of the two is called coulomb efficiency.

    The voltage needed to charge a battery is not the same as the voltage you get out of a battery during discharge. The quotient of the discharge and charge voltages is called the voltage efficiency.

    The product of voltage and coulomb efficiency is called the efficiency of a battery. A lead acid battery has an efficiency of 80% a Li-Ion battery has an efficiency of 99%.

    System losses:

    The list of variables that may influence the efficiency of solar installations other then what is discussed before is called the system losses. The system efficiency is also influenced by the following factors:


    01 Soiling Dirt, leaves, bird shit and other on the panel surface 2.0%
    02 Shading Effects of trees, chimneys, or other obstacles  
    03 Snow Effect of snow on the panels.  
    04 Cell Mismatch Effect of cell differences between panels in series 1.0%
    05 DC/AC Wiring losses Transport losses of DC and AC cables 2.0%
    06 DC Connector losses Loss of high currents in the connectors 0.5%
    07 Light-Induced Degradation (LID) Degradation in the first period of panel use due to light. 1.0%
    08 Nameplate Rating Errors due to incorrect measuring the panel performance !!!.  
    09 Aging / year per year loss due to aging of the panel. 0.8%
    10 Availability Loss as a result of unavailability if the grid or system maintenance  
    11 Solar Orientation Factor (SOF) Loss Loss due to less than optimal orienting panels to the sun 1.0%
    12 Mounting loss Losses due to positioning panel close on a roof or not 1.0%
    13 Transformer losses Extra losses due to the use of external transformers.  
      Total Loss   9.3%

    All these losses are estimated in percentage of their effect on the system performance. If they are considered zero they are not mentioned. The following degradation in performance can be expected is as:

    Efficiency year 1 90.7%
    Efficiency year 2 89.9%
    Efficiency year 25 70.7%

    Over all Efficiency

    Now we have made and estimations of all losses in a GT or OG solar panel system we can have a look at what the total outcome is. Lets calculate the overall system efficiency and see why your seller is never telling you this. This overall system efficiency is calculated as follows. The Panel operational efficiency multiplied by the Inverter efficiency multiplied by the system efficiency.

    For GTI and OGI we come out on:

    1 GT : Panel x inverter x system  = 86% x 95% x 90.7% = 74%
    2 OG: Panel x inverter x Lead acid battery x system  = 86% x 95% x 80% x 90.7% = 59%
    3 OG: Panel x inverter x Li-Ion battery x system = 86% x 95% x 99% x 90.7% = 73%

    These are the real system efficiencies that you have on your roof in the first year. They might be a little different but not that much. Meaning an GT installation like 10x 250w panels can produce on a nice summer day with 1000Watt/M2 of irradiation not 2500Watt but something closer to 1850Watt.
    With lower irradiation levels the panels get less hot and there for the panel efficiency will go up a little. At the same time less irradiation also means less incoming energy to covert. The total power production with lower irradiation will always be lower.

    Every year the system gets older until the 25 Year life time of the panel system. The efficiencies after 25 year will have dropped to :

    1 GT : Panel x inverter x system  = 86% x 95% x 70.7% = 58%
    2 OG: Panel x inverter x Lead acid battery x system  = 86% x 95% x 80% x 70.7% = 46%
    3 OG: Panel x inverter x Li-Ion battery x system = 86% x 95% x 99% x 70.7% = 57%

    An other side effect of this operational analysis is the conclusion that most system in location of 45° latitude or higher will have inverters which are to big for the panels. At these latitude level the sun with not often produce 1000Watt/2m irradiation. So a 300 Watt panel will maximum produce most of the time below 225 Watt of power. This means a inverter of the size of 225Watt  is sufficient for panels of 300Watt instead of a 300Watt inverter. That saves some money since the inverters are 30% of the installation cost.

    If you compare the overall system efficiencies with the amount of sunlight coming in then the overall efficiency of available energy compared with actual energy used is around 10.. 12%. We still have some work to do be for we can actually use what the sun is offering us.

    I hope you have given you a better idea about what your solar installation is actually doing at your roof and what we need to do to get the numbers up. Happy renewables

    Oscar Goos

  • Early version of Arduino 1992

    For a future Arduino museum:

    This is one of the earliest developed arduinos dated 1992 based on a 8032 Micro controller. At that time the credit card controller was new and very expensive. I had gold in my hands but didn’t realize it.  Almost 20 years later an Italian engineer did recognize it and developed the first Arduino.  I want to say thanks to him and the Chinese production industry to allow me and many others work with this new type of LEGO. The LEGO of today keeps many engineers busy being creative and constructive doing the inventions of the future.

    Unfortunately for me I never recognized the potential of my design back in 1992. Call it stupid if you want, but it made me continue with inventing, designing and making.

    It had the following functions:

    • – Language used “C”, compiled with a Keil C compiler
    • – A boot loader loading the same hex files as today.
    • – 32K RAM data +program memory, 8K boot ROM,
    • – A Power LED
    • – RS232, Serial upload port
    • – A shield interface 8 x IO ports,
    • – Size Credit Card.
    • – PCB home made

    Later I decided to do it all over again but now better Goosduino 2.0. It is basically a PLC (Programmable  Logic Controller) with all interfaces integrated in one system. The enclosure is DIN rail base and easy to integrate in to existing DIN rail cabinets.

    The PLC has many functions and doesn’t need a shield. It’s for sale now.

    Availability Fig 1 : 1992, one of the first Credit Card Controllers
    Availability Fig 2 : 2015, An upgrade of and old idea.

  • ATmega328 PLC, the best you can get


    The ATmega328 PLC is a credit card controller packed with many useful functions. It is light weight, consumes low power, has a DIN rail case, build in display, backup power and is scalable. With this PLC you can build and control anything you like. Compared with other PLC’s there is no need for special power supplies, or other interface modules. Practically any sensor from any manufacturer can be connected. On top of all this it is cheap compared with others PLC’s in the market.

    The picture below shows the PLC as monitor and measuring device of the electricity grid. This application can activate generators and backups at times when the CFE has blackouts. ( Grid values are zero because the photo is for demonstration purpose).

    The ATmega328 PLC


    The inside

    The PCB is a high quality double layer made of glass fibre, 1.5mm thick, routing is done with 10mil traces. The PCB measures 100×68 mm has 85 components, the enclosure measures roughly 107x88x60 mm.

    Below an image of the PCB layout and the various functions and interfaces.


    The ATmega328 PLC


    Interested to buy : send a message


    The idea behind it

    This PLC was developed for different reasons. One reason was to generate a flexible control platform with a display integrated to control any process you like. A second reason was to offer a complete integrated PLC solution to any one like students professionals and engineers. With this PLC you can focus on your job instead of being busy how to assemble and install a PLC controller.

    The basic idea regarding the specifications for the PLC was:

    • It had to be small in size with a low power consumption
    • Should run from solar panel and or standard Lithium or lead acid batteries.
    • It should have build in AC power drivers.
    • Had to be expandable or scalable.
    • Standardized Interfaces and there for sensor manufacturer independent.
    • Equipped with a large display
    • Memory to store statistic measurements.


    This controller platform has a number of applications. Some are available and some are in a concept phase of development. Holamex works on the following applications.

    • Photo voltaic energy monitor
    • Smart solar collector differential thermostat
    • Battery heath monitor and charger.
    • Swimming pool controller with automated pool and garden light timer
    • Load control for factories with high energy demand.
    • Light lux meter.
    • Flow meter
    • High way traffic density counter.
    • Smart Solar light post monitor and battery maintenance.
    • CFE grid monitor with backup switch functionality.
    • Air pollution monitor.


    The following functions are implemented

    • Central controller, ATmega328
    • RTC, Real Time Clock with high accuracy, DS3231,
    • Non volatile RAM, AT24C256, 64KB
    • RS485 half duplex bus, MAX485
    • ADC external reference, multi turn pot meter
    • Temperature sensors, DS3231, ATmega328
    • Push buttons.
    • LCD Display 4×20.
    • External Terminal port / PC interface

    Ports on the module

    The ports on the PLC allows connecting external sensors or measurement modules. Some of the ports provide beside the GPIO signals also the necessary power to feed the external modules or sensors. The ports are implemented with 3.81 mm pitch screw terminals. The following ports are available:

    General IO ports 2 GND, 5/12V, 2 IO’s
    Analog out port 1 GND, 5/12V, 2 12bit Analog out
    Relay port 1 NC or NO contact 8A, 250VAC
    DC out port 1 12VDC, 1ADC
    120V power port 1 Phase cutting 120VAC, 4A
    ICSP port 1 In Circuit Serial programming ICSP

  • Programmable PLC with various Interfaces

    Availability Fig 1 : PLC LCD Display 20×4


    Programmable Logic Controllers (PLC) are small computers which perform a number of logic functions in order to process inputs and control outputs. They are used in the industry.

    PLC’s normal exist out of a power supply, a central logic control unit and interface modules. they fit in DIN rail cabinets.  They are often programmed using specific Graphic oriented software. 

    Availability Fig 2 : PLC PCB

    My goal was to develop a PLC existing out of one units having all what most industrial processes need. No extra modules and most interfaces you need. there are no limitations on functionality because it is programmed in “C” language.

    This PLC has all the interfaces as described in the table below. The general purpose ports, TS485 and I2C ports are implemented as four wire ports. Each four wire port has two protected micro controller IO lines and a selectable 5Vdc or 12Vdc power.

    The photos on the right shows the PCB Display of the PLC. The unit has the following interfaces

    Interfaces :

     Description Ports/Interfaces
    Power supply 12V 1
    General purpose port 2
    Analog out 2
    Relay No/NC 1
    Power output 1A 12V 1
    Line Voltage Zero / Peak detector 1
    Line power phase cutter 1
    USB programming port 1
    In Circuit Programming (ICP) 1
    IO matrix 1
    RS485 Serial port 1
    I2C with power port 2

    The functions implemented  on this PLC are the following.

    Functions :

    Availability Fig 3 : PLC+Displ
      Function Values
    Controller ATmega 328 
    Memory 32K Prog, 2K RAM, 64K EEProm 
    Real Time Clock (RTC) 2 ppm accurate timing
    Power selection 5Vdc or 12Vdc 
    ADC reference 1x
    Display LCD 20×4 characters.
     Power protect  Double power input.

    The dimensions and other physical characteristics of this PLC are:

    Physical Characteristics:

     Description  Values
    Case dimension (LxWxH) 110x78x60
    Weight 0.3 Kg
    Case type DIN rail
    Color White / Black
    Material Poly-carbonate
    Protection Class IP20
    Availability Fig 3 : PLC+Displ

    The schematics for this PLC was entered in NI-Multi-sim and layout of the PCB was done using NI-Ultiboard. I want to say thanks to national instruments for their support.

  • TFT display with CLI Command Line Interface

    There is wide range of TFT displays available for ATmega processors. Displays distinguish them selves by resolution, dimensions and serie or parallel interfaces.

    Availability Fig 1 : TFT energy monitoring display

    For an ATmega328 processors an 8bit parallel display consumes all IO pins except the Series TTL interface and one Analog IO. The good thing is that with this processor its possible to build a relative simple low volume general purpose TFT display.

    Many controller interfaces require a combination of digital and Analog IOs interfacing to various sensors and a reasonable sized display to display results and status of the  sensors. By having a display with a Txt Rx communication interface space is saved on the IOS needed to control external sensors.

    The display on the right is a 3.5 Inch 320 x 480 resolution ILI9488 display controlled by a ATmega328 processor. The code exist out the following functions

    • The screen layout software
    • A Command Line Interpreter (CLI)
    • A real time clock.

    The CLI is responsible for reading values from the TTL Rx Tx interface and displaying them on the TFT screen. The screen is grouped in Battery, Grid/Net and Photovotaic related values. It can read all parameters defined on the TFT screen like:

    • Battery : voltage current, SoC, battery cycle count, battery health values
    • Grid/Net :  voltage current, power energy values and power factor
    • Photovotaic : voltage current, power Energy, panel temperature values 
    • Time and date values.

    The TFT libary used to implement the program consumes a reasonable percentage of all program memory on a ATmega 328 but after finalizing the code sufficient program and RAM space is left over for some extra functions. The code uses 27.7K program space and around 1.1K RAM code.

    For the ones interested below the basic code for the CLI copy it in your sketch and have fun.

    #define CR         0x0D	                // \r
    #define LF         0x0A                 // \n
    #define SPACE      0x20                 // " "
    #define OPT        0x25                 // %
    typedef struct cmds {
    	String      str;
    	void       (*pt2function)(char);
    } 	commands;
    	commands    cmd[] = {{"",},{"settm",settm}, {"batt",batt}, {"net",net}, {"pv",pv} };
    void readstream(byte state){
    uint8_t	n=1;
    	if (Serial.available()!=0){
    		while (Serial.peek()==LF || Serial.peek()==CR || Serial.peek()==SPACE) Serial.read();   // Read all Cr, Lf,spaces out of the stream until first characters 
    		cmd[0].str=Serial.readStringUntil(SPACE);                                               // Read Command string until first space
    		while( cmd[0].str!=cmd[n].str && n<=sizeof(cmd)/sizeof(cmd[0]))  n++;                   // Find Command in the cmd array list.
    		if (n>sizeof(cmd)/sizeof(cmd[0])) return;                                               // If command not found, terminate the cammand processing 
    		while ((Serial.available()!=0 && (Serial.peek()!=LF || Serial.peek()!=CR ))) {          // Check stream has no Cr/Lf characters 
    			if (Serial.read()==OPT) cmd[n].pt2function(Serial.read());                          // If stream is Option sign Call function pointed by cmd[0] and read option parameter
    			else Serial.read();                                                                 // IF not option characters read stream
    void settm(char par){
    int8_t  n;
    	switch (par){
    		case 'T' :{ for (n=2; n>=0; n--) *(&RTC.time.sec+n)=Serial.parseInt();	}               // read three times data from the stream to the time struct sec, min, hr.
    		case 'D' :{ for (n=0; n<=2; n++) *(&RTC.time.mday+n)=Serial.parseInt()%100; }            // read three times data from the stream to the time struct date, month, year (years needs MOD 100
    		case 'C' :{ RTC.derror=RTC.derror+Serial.parseFloat()/24; }

    Examples of commands are : Set the time : settm %T 06:05:10 %D 11/12/1962
    Other commands are but not seen in this code : batt %V 12.56 %I 23.25 %E 2534.1
    net and PV

  • DK102 personal and car protection using GPS Satellite

    Translate/Traducir :  ==>Para Español,    ==>For English

    SOS Panic button & GPS tracer

    The DK-102 Mini GPS Tracker is a solid and accurate GPS tracker used for protection of persons and or objects like cars. It’s one of the few trackers that rely on sending text message alerts with time-stamped longitudinal coordinates. It’s well priced and very easy to use, compared to some of the other products in the market.

    After calling the tracker from your mobile phone, you will receive a time-and-date stamped SMS text message from the DK-102 Mini GPS Tracker with it’s coordinates, in longitude and latitude. If you have a web-connected smartphone you can click on the coordinates and a Google map will open so you can see the location of your tracker. If you don’t have a smartphone, you will need to type the coordinates into a mapping software app, such as Google Earth, to see where your child, teen drive, Car or pet is.
    The DK-102 Mini GPS Tracker is very simple to use. The tracker uses a Mobile (prepaid) sim card to communicate. Once you have inserted the card and it is activated by your mobile operator you are ready to go

    DK102-2 Fig 1 :Panic button and GPS tracer.

    GPS Tracer and more.

    This device can be used to track your car child or any thing that is valuable to you.  Ones the SMS message is received at your phone you simply  select the message and google maps opens and shows your were your tracer is. The tracer can do more than only show your locations. Other information in the text message from this GPS tracker includes the speed of the device, so you can monitor and keep a log of how fast your teen is driving in the car. It also informs you of how much battery life is left as well as the tracker’s current signal strength.

    Function of the Tracker/Panic button

    The tracer can be used for a) personal protection of you or your child and b) and object like a car. The functions of this small portable device are:

    Personal protection:

    • Panic button which alarms your selected telephone numbers
    • Listen in at the location were you are.
    • See were you are, geographic information used by google maps.
    • Time and date of the location.
    • Configuration of 5 trusted telephone numbers to be called.

    Object protection, for example a car:

    • See were your car is, using google maps.
    • Detect the movement of your car
    • Over speed of your car
    • Calculate your mileage distance
    • Detection of shock.
    DK102-2 Fig 2 :Google maps at mobile.

    SOS panic button.

    The SOS button at this tracker functions as a panic button. Ones this button is pressed for 3 seconds, it will send a SOS message with coordinate to all authorized number every 3 mintues, until a SMS “help me!” is replied to the tracker. So it keeps on calling till the message help me is send back.

    DK102-2 Fig 3 :Panic button on the Tracer

  • Electricity backup for houses & offices SOHO







    We offer light when your electricity company (CFE) can’t offer it. When your power company has problems to bring power to your house or office we can take it over. We have developed a power backup up system which generates the electricity for you at times when the electricity company can not do this. Our solution allows you to continue watching television, use your lightes in the house and continues your internet connectivity. No more hustles with candles, flashlights, or small led bars. We give you light in the dark. That is why we say

    == Yes we can ==

    What is a electricity backup

    A backup consist of a charged battery and a electronic system that converts the 12volt from the battery in to 127volts for you house. This conversion is called the inversion of 12V to 127V. The electronic equipment is called an inverter. Whenever the CFE doesn’t provide electricity the inverter takes energy from the battery and converts it into 127V. Most houses in Mexico use 127V to light your lamps, run your television and or computer.


    Availability Fig 1 : Inverter







    For whom interesting

    In all situations were a 24×7 demand is for electricity this system is a solution. This means

    • If you hate to sit in the dark during the rain and thunderstorm season
    • When you have an office and you want to continue businesses 24×7 365 days a year.
    • Medical equipment which demand 24×7 electricity.
    • Shops which like to continue
    • Computer systems which require constant power.


    What we offer

    We offer the following services

    • Standard backup system for 6hr backup time, this 7x13Watt Compact Fluorescent Lights (CFL) + Internet modem.
    • Installation and integration of the backup with the house electricity network.
    • Non standard backup solution for medical equipment and offices.
    • Demonstration of the solution, because seeing is believing.



    Electricity backup characteristics
    Component Charteristic value Unit      
    Elec. Backup Standard capacity 6..10 hr      
      Standar energy 1.24 Kwh      
      Switching time <16 ms      
      Max load 600 Watt      
      Recharge Time 24 hr      
    Inverter Wave form Pure sine wave        
      Artchitecture Offline        
      Power 600 Watt      
      Voltage / frequency 120 / 60 Volt/Hz      
      Weight 3 Kg      
      Alarming Audio, LED        
      Fan control Inteligent        
    Battery Type Lead acid        
      Voltage 12 Volt      
      Capacity 115 Ahr      
        1.38 Kwh      
      Weight 29 Kg      
    Charger Stages Three stage        
      Stages CC, CV, Flt        


    Costs of the inverter

    Service Price        
    1 Standard backup system $9800,-        
    2 Installation package / materials $ 550,-        
    3 Installation work $ 980,-        
    3 Non standard backup solution $ Quote,-        

    Prices are in Mexican pesos, ex IVA, Call for more information.




    Phone :
    Cell Phone:
    Email :
    Oscar Goos
    442 234 3331
    442 144 5679


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