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32 Threads found on edaboard.com: Watt And Meter
Hi, I think you mean a plug-in watt-meter is not what you're looking for? Is the hand-piece part of this machine isolated from the mains? Is it a DC or an AC device? Do you know the voltage and estimated current? What measurement tools do you have available? Do you have a DMM that can measure DC current (...)
Hi there, I have found measuring RF power a tricky thing to do if not special equipment is available and I would like your comments on this. I have an HF power oscillator that is supposed to output 2W. When I measure this in the watt meter it outputs 2W. When I measure it in the scope, it outputs about 28Vpp ie 2W, and the (...)
Use a Battery and a variable resistor to set the current and to simulate changes in sunlight. Use a watt meter to display the power.
The ATMEGA in the watt-meter might be programmed with code protection, don't try to read the chip, try to download the program file from the corresponding product website.
Laminated Steel-core transformers come in various ratings of watt/Kg depending on how thin and quality of cold-rolled grain-oriented steel. But I suspect you want to measure the rating. If you have a voltage and current meter in your DMM and a few resistors like a small 12V halogen bulb you can record (...)
The "AC watt meter" project paper is assuming that you know how to read 10 Bit ADC values and thus doesn't discuss the details. But it's not done correctly in your code. I'm not using C18 and don't know how ADRES is generated. Presuming it is a correctly right adjusted 10-Bit values, it surely can't be stored in a char (...)
I have a laser power meter that currently outputs voltage in mV but it is (by the design) off by a factor of 3. For example, if I have a 3 watt laser, it is outputting 1 volt. Or if I have a 600mW laser, it is outputting 200mV. I use a voltmeter to measure the output and multiply by three in my head. I would LIKE (...)
The specification snippets don't fit well together yet, I think. - "watt meter" refers to real power measurement or what? A range and resolution specification seems necessary, however. - "collecting from 20 sources" means one device with 20 channels or 20 devices? - "get a reading at any time or once a month" means to read instantaneous (...)
The principle of watt meter is to use voltage and current data to calculate watt; watt seconds becomes kWH and that is what you are paying for. If yoy draw less amps you will use less Wh and pay less. Nothing that you do down stream from the power meter will (...)
An amp-hour meter is the most correct way to measure the energy which the battery has received from a charger. Also to measure how much energy the battery has put out to a load. An amp-hour meter is different from the watt-hour meter which measures electrical power going to our houses. Both factor in the elapsed time.
in making watt meter using the PIC, according to ohms law, how the resistance in the circuit is calculated ? switch off the circuit and measure using ohm meter ? , or any other method ?
i got a pic18f452 i want to make a watt meter to measure dc voltage and current from a circuit. i am new to micro controller pls help me.
Hi. You really give me a hard work here as I must move my head along the screen to read your big blue letters :-P What exactly are you planning to measure? Do you want to know this because you're wondering how much wattages your householding consumes? Then go for a watt-hour meter, as that is what you're paying for.
hi to all i have made this little uhf modulater from old vcr and only gives fiew meter i need little more power not more than 1 watt or less 500 mw is enough good i need to transmit and increase its power rf output to 1 or more km with external aerial antenna what kind of amplifier transistors bfr 90 91 96 bfq68 do u (...)
hi... i'm doing the watt hour meter using the pic16f877a....but the problem is i'm new with the i'm having problem to create the code for the pic...i already have the circuit for the input voltage,current and also phase difference for the pic...these analog input will be converted to digital by using the adc in the how i gonna
If the wattmeter belongs the power company there is no way to make an hole, insert sensors etc inside the meter. If the pocation is dark, try to detect the difference in reflection as the disk is turning ( here the disk is 90 % black and 10 % red ) , but be careful about the daylight. Mandi
hi, i want to make a digital watt meter with pic microcontroller. how to do it? i googled but there is no simple solution. i am new with microcontroller. please help me!!!
HI You can use ADE7753 from ANALOG as a watt meter The ADE7753 use SPI for connection with the micro controller ALl the best Bobi
Not that easy without those specific ICs. cameo_2007 you are a advance member how can you suggest this type of incomplete solution. Fiann says "the watt meter I'm building will be a stand-alone product" He will have to measure p.f. (power factor) also to know wattage.
anyone have an idea of using this magnetic swipe card interfaced with watt-hour meter to create a prepaid electricity meter. its for my project study.. thanks!
Hii every1! I have designed a probe (BS) to communicate with the single phase watt hour meter. Inorder to communicate; we need to activate the meter by sending the ASCII characters.....If any one know plz let me know Thank you; :D
Hi, I need an optical interface (an IR receiver and an IR transmitter separeted) and software to read data captured and stored in a three phase watt HOUR meter for industrial use. Regards, Fernando
Have you verified which one is correct by using an external watt meter?
please help me... i have a problem that confuse me. when my 3 phase 4 wire wye circuit watt hour meter loaded by an arc welding machine (it's a 1 phase machine), the induction type watt hour meter act so weird. The disc rotation reverse slowly for a few moments, and then stop, and (...)
HI TO ALL I THINK THERE ARE MAJOR PROBLEM OF WRONG BILLING OF ELECTRICITY and ALSO THE MORE ENERGY CONSUMPTION THEN RATED POWER BY APPLICES SO I WANT TO DESIGN A ENERGY meter FOR SHOWING watt CONSUMPTION and IT SI GOOD IF IT CAN SHOW VOLT and CURRENT BUT I AM GETTING PROBLEM TO DESIGN CURRENT SENSING (...)
Would you pls share the advantages/disadvantages of both conventional watt-hour meter and modern digital watt-hour meter? Which one is more susceptible to external magnetic field? Say a hall-effect current sensor (e.g. ACS706 from Allegro Microsystem) is exposed to a magnetic field of 12000 G. Then, (...)
Dear I want to implemented watt meter with ADE7756 with below 1% error in measurement of 220v instruments. have you any suggestion? Best rigards
does anyone has the diagram of wattmeter? i want to build and use with 220V equipment. thank you
HI I WANT TO USE THESE ICS FOR BUILDING A 3 PHASE watt HOUR meter. WHO WORKED WITH THEM? I NEED A C SOURCE CODE FOR DRIVING ADE7754 (8051 CORE IS THE TARGET).IF ANYONE WORKED WITH THEM ,SHARE HIS/HER VIEW OF POINT. IL717 IS AN ISOLATOR WITH FOUR IT SUITABLE and RELIABLE FOR INDUSTERIAL APPLICANTS? BYE
Hi, I would like to make a 8051 based single phase watt-hour meter for AC power. Can anybody help me with scematic and code. Thank you Itp
The idea is to measure the power my home uses, store and analyze later with a PC. A digital power meter with pulses per watt should be handy for this but I have a analog one with rotating disk. What I want: The incoming phase of my home into a LEM current sensor (LA 55-P) to measure the current. The voltage is not (...)
Hello friends, Did anybody already work with A#T#7#3#C#5#0#0 and A#T#7#3#C#5#0#1#/502 watt-hour meter solution from A@T@M@E@L??? regards, 2000