The second half of this document describes how to connect the voltage and current sensing circuit to the mc9s08gw64. Electricity meter integrated circuits and reference designs. Multicircuit power meter acurev 2000 series accuenergy. With all three fundamental functions available, this multimeter may also be known as a voltohmmilliammeter. Vu meter 2 with lm3915lm3916 19 led s chematics wiring diagram circuits schema electronic projects shema. In addition to the normal rf power meter trip functions such as swr, low power trip, and high power trip, the alarm functions can also be used for rf ammeter and generic meter applications when mb1 is used with userprovided analog sensors.
What is it an rf power meter is a device which you can use to measure the power a transmitter outputs. Game circuits ic programmer ic programming indicators inverter circuits led circuits lights logic circuits measuring circuits meter circuits microchip. With these every nation and every military is run and controlled by digital systems and devices. Our integrated circuits and reference designs help you create smarter electricity meters with advanced security and connectivity features to meet system design requirements. This handy meter measures electrolytic capacitor equivalent series resistance esr in the circuit.
Alternately, a coupler with diode detectors can also be used. Reference design for an energy meter using the maxq3180. Kinetis m onephase power meter design reference manual nxp. The atmega88 multi meter circuit will be used primarily in laboratory power supplies, in which it is convenient to observe several electrical quantities at the same time.
The task is to design, build and test a power meter circuit on the basis of an envelope detector. Integrates modbus device data to iec 61850 protocol for accurate data. Multifunction digital power meter electro industries. A very simple to build, menu driven rf power meter, based. When the speaker resistance is 4o, then, make r110ko, if the resistance of speaker is 8o, make r18ko, and if the resistance of speaker is 16o, make rko. Audio vu meter schematics wiring diagram circuits schema.
The esr meter is perfect for any electronics repair technicians, engineers or hobbyist. Referring to the proposed digital power meter circuit above, we can see the ic 4060 configured as a voltage to frequency converter. Digital power meter for reading home wattage consumption. Measurement module for branch circuit power monitorsub meter tida00222 pdf 3902 kb 30 sep 2014 view all technical documents 7. Power meter project category is a curation of 20 web resources on, swr mega swr power meter, portable rf sniffer and power meter, converting zetagi hp201 for ham bands. We made a device to measure the power consumption of appliances. Click on schematic to enlarge the circuit above is the same as with the original power and swr meter project, however a 22pf variable capacitor has now been added on the forward output to minimize coupling between forward and reverse. Electronic circuits, diagrams, software, tutorials, projects, schematics, datasheets and more electronics circuit design are provided by free. Instead of using lcd display module the meter connects to a pc via usb port and displays measurements on a computer via usb rf power meter software. Electronic circuits, diagrams, software, electronics. In general, the voltage is measured casually, is difficult to measure the current. Ad8307 usb 0500mhz rf power meter allows to measure the power of transmitters from 1nw to 2w 50w with 40db attenuator. Sample software application code has also been pro vided, to be directly used in an application.
Some circuits would be illegal to operate in most countries and others are dangerous to construct and should not be attempted by the inexperienced. This is a simple field strength meter that can be used to verify that you antenna is in fact radiating energy. Peak hold l1 on, l2 on this mode can be use with ssb transmitters to see your pep output. Tida00222 measurement module for branch circuit power. Power in an electric circuit is the product multiplication of voltage and current, so any meter designed to measure power must account for both of these variables electrodynamometer movement. Usb rf power meter is based on popular ad8307 watt meter ic. For example, how much current the attached device consumes depending on the value of. Although i bought the book and respect the of the authors i will share my own schematic here. This meter makes measurements which are often impossible to check with standard digital capacitance meters. Design and implementation of wireless energy meter system arxiv.
The shark 200 unit is an ultracompact power metering device, providing industry leading revenue metering functionality combined with advanced datalogging, communication and io traditionally found. Homebrew swr and power meter first of all, this swr meter in this article is not exactly homebrew, as i based the circuit on the schematic in the excellent book arduino projects of amateur radio. The absence of peak detector or the detector will of averages give the circuit a fast reading of instantenous power, and this gives us insight of both. Mcp6l2 and pic18f66j93 energy meter reference design users. Power supply and power control circuit diagrams circuit schematics note that all these links are external and we cannot provide support on the circuits or offer any guarantees to their accuracy. Schematics for the v oltage sensing circuit and the current sensing circuit have also been provided. Design and implementation of smart electrical power meter system. In this post we are going to construct a digital water flow meter using arduino and 16 x 2 lcd display. Whether for single or polyphase meters we have the right ingredients for accurate energy measurement and efficient communicat. Article presents reference design for polyphase, energy metering afes.
Acurev power meters feature true rms metering of energy parameters and offer 4 programmable tariff periods with 12 independent seasons, 14 schedules, and 10 year holiday. The following schematic diagram represents a segment of an industrial power distribution system containing generators, power transformers, busses sets of conductors used to connect multiple loads andor sources in parallel with each other, instrument transformers795 and meters, circuit breakers, motors, and motorstarting switches. Energy meter circuit detailed project with source code. Esr is a very important characteristic of capacitors greater than 1 microfarad. Voltage, current, temperature, power and load resistance. Led audio level meter schematic the 1k resistors in the circuit are essential so that the leds turn on at different audio levels. Power supply and power control circuit diagrams circuit. We designed them to maximise efficiency, requiring less use of. We also include a suitable power supply circuit with the use of mosfetamplifier with 200w of power, not only of his course schematic diagram for the layout design is also already there. Active energy kwh, reactive power var, apparent power va, reactive or. First of all, this swr meter in this article is not exactly homebrew, as i based the circuit on the schematic in the excellent book arduino projects of amateur radio. Branch circuit power meter multicircuit energy meter for high density. Power quality meter power meter electro industries. The power tap is built into a hammond 1590a enclosure.
Why did i built it im a member of the model aircraft c19lub fms spaarnwoude near amsterdam and i started building and flying drones. Actually, to say the ac power meters measure the 100v ac current is flowing in the power cord over do it. The software package provides two dll files, the choice of which file to use is dictated by the users operating system. Hardware schematics, a detailed software presentation, and test results are shown.
Further the max232 circuit is used to interface with the external devices such as p. Multimeter schematic circuit if an ohmmeter function is desired in this multimeter design, it may be substituted for one of the three voltage ranges as such. Due to op amp input offset voltage and a software correction which is made to the lower power readings, it is likely the 10 mw or possibly the 20 mw digit will be lit when there is no forward power input. S chematics wiring diagram circuits schema electronic projects. Designing circuits should be as easy as using microsoft office. Simple digital water flow meter circuit using arduino. Power monitoring and control schneider electric global. Can read up to 999999 units kwh with a resolution of 0. The meter also excels at measuring power quality, including waveform recording and iec 647, iec 6415, and iec 6430 class a edition 3 compliance. Make also sure that r1 in the circuit diagram can withstand 400vtop, and that r4 can dissipate 5 watt without any problems.
Electro industries introduces a new standard in panel mounted power metering. The design and implement of power meter for 7tesla. Usb rf power meter is based on popular ad8307 watt meter ic and pic18f2550 microcontroller. Powermonitoring features of the afes are discussed. Product overview important information on using the mcp3909 3phase energy meter reference design including a getting started. Energy meters for circuit breakers are used to transmit electrical data on all electrical loads.
I wrote the software to include the numerical value from the log detector and also have a analog bar display. The same circuits can be used for the rf power coupler and the ad8307 as in the original power and swr meter project, however a few new builds are shown below. There is no reason why you cant change these resistors, although anything above 5k may cause some of the leds to never switch on. Applications software for control of minicircuits power meters, switches and signal generators in a range of common test scenarios, such as 2 port loss gain return loss measurement.
Circuit which uses mosfet power amplifier is powered by the output more than 200w speaker 8 ohm impedance. Audio wattmeter or audio powerlevel meter circuit with. Mcp3909 3phase energy meter reference design using. The design and implementation of the electrical power meter are explained in details in section. Power metering, energy monitoring and software schneider electric. Referring to the proposed digital power meter circuit above, we can see the ic 4060 configured as a voltage to frequency converter, while the ic mm74c926 forms a frequency counter stage capable of counting upto 9999 pulses continuously through the connected 4nos of 7 segment common cathode displays. This document describes how to use the mcp3909 3phase energy meter reference design as a development tool to emulate and debug firmware on a target board.
C with hyper terminal software as the interfacing software with the baud rate of. The meter i use is based on the mark weiss modulation meter. The meter scale must be calibrated and with a little effort, you can get good results. The arduino based wireless power meter centered on the design and development of a current.
Activex com object for automation via usb windows pcs, must be. Although i bought the book and respect the of the authors i. The software program, written in the c programming. Circuit and overcurrrent relay rmc122d then, go to the meter area around your circuit breaker system. The pcb is cut and filed a bit to make room for the corners in the enclosure and the protrusion of the connectors. Whether for single or polyphase meters we have the right ingredients for accurate energy measurement and efficient communications. Chemical and process engineering solution from the industrial engineering area of conceptdraw solution park is a unique tool which contains variety of predesigned process flow diagram symbols for easy creating various chemical and process flow diagrams in. A slightly updated detector circuit and tandem match coupler. A special meter movement designed especially for power measurement is called the dynamometer movement, and is similar to a darsonval or weston movement in that a lightweight coil of wire is. Remote terminal unit rtu for data acquisition and integrated utilities metering. Forward power meter reading seemed to interact with the reflected power meter reading. I arrived to the conclusion that high impedance meters should be used to make it work.
We will be taking a look at yfs201 water flow sensor, its construction and working and how to interface with arduino to extract some useful readings. It can be a battery, a transformer with rectifier and. Looking around for a way to check the calibration, i found a simple rf power reference circuit on the web site of w1ghz. Output is displayed in dbm, watts nw, uw, mw and w range as well as input voltage.
I had room on the same board as the power meter, so added that layout. Wattmeter design dc metering circuits electronics textbook. An916 a multifunction power meter reference design based on. Designed for normal 230v ac and maximum line current of 30 amps 3. Activex com object designed to be used in any programming environment that supports third party. Vu meter 3 with lm3915 10 led s chematics wiring diagram circuits schema electronic projects. To cut off a part of the circuit current flow from a current meter must be connected to it. Here resistor r2 acts as the load for the amp and it should be able to withstand twice the maximum power of the amp you are going to measure. An4164, a singlephase energy meter with capacitive power. Capacitance meter digital capacitance meter, microcntroller at90s23. Do not use the power meter in the configuration described above with currents more than 2.
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