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Interfacing Optocoupler

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21 Threads found on edaboard.com: Interfacing Optocoupler
HI boys, please, can you help me? To this day I use optocoupler PC817 to interfacing atmel or pic input with other devices - switches, relay contacts, etc. Now I make redesign of pcb and need smaller size. pc817 is very big. I need some another circuit such as transistor, zener diodes etc. Connection will be same - switch NO NC, or contact of
Hi. I do ZCD for AC Power lines. I read application note of Microchip AN521. This application note explain for interfacing AC Power lines directely connect with Microchip I/O Pin. My Problem is they told Phase connect with I/O pin of microchip but they cannot mention what about connection nutral. Is it required to connection of Nutral .?
Your post says that this is a "Sensor interfacing circuit" but I actually don't know where is your sensor !!! If I'm correct then I guess the sinusoidal function generator represents the sensor, that's why you mentioned it's voltage changes from 0.6V to 40V. The only thing I couldn't figure is how may the sensor change with a frequency of 100Hz?
give me the idea about isolation circuit i mean any means to isolate the main circuit while interfacing with power line normally for power line communication to transmit/receive data isolation circuit may be any form of transformer
hi all, i'd like to find out more about this and would appreciate any help. the ignition (rpm) signal is at 12v and is a square wave signal. what would be the best way to interface this signal to a microcontroller? do i have to use a comparator or adc or some other way? thanks for any help.
Hello, I am using "ADC0804 with optocoupler" and 8051 for measuring Analog Voltage. Now I want to use MCP3202 which is SPI Protocol Based, Becasue is required Less pins to interface with 8051 Microcontroller. I have read from datasheet that It required ?Anti-Aliasing Analog" which is MCP601". My Question is that How I know MCP601 i
Hello, I am using "ADC0804 with optocoupler" and 8051 for measuring Analog Voltage. Now I want to use MCP3202 which is SPI Protocol Based, Becasue is required Less pins to interface with 8051 Microcontroller. I have read from datasheet that It required ?Anti-Aliasing Analog" which is MCP601". My Question is that How I know MCP601 i
I have car with CDI type ignition system. I need to detect the rpm of the engine through electrical means. How do I interface a microcontroller circuit with the engine's spark coil. regards
Dear all, I am doing a project using LPG detector. I need to interface the LPG detector to 8051. can Anybody help me, how to interface the LPG dector to 8051 and send me the circuit digram also. and guide me, which sensor is best for this, which also available in tamilnadu. Best Regards, R. B. Raju
Dear friends, I want interface the mechanical relay with FPGA. Can any body help me. Please send me the circuit. I want use the following things: MCT2E, SL100 and IN4007. I am waiting for ur response. thank u. with regards raj
Hello, I am trying to interface some 5V TTL signals through an optocoupler to a microchip PIC16C55A microcontroller. I need to calculate the current to drive my opto with so that I won't damage the input of my micro. When I went to the datasheet for the PIC, I found that: Max. current into an in
please tell me how to interface single phase energy meter with 16f73 via optocoupler
I have pnp type proximity sensor with output current 200mA & want to interface it with mcu at89c51 please help me as I am confused about interfacing current output to mcu Can we use relay & optocoupler if yes please send circuit or suggest any other possible way Thanks in advance bye
Hi everyone i am working on project in which i have to fetch data from a 3 phase ac power supply and monitor it and correspondingly control a water pump depending upon the power supply status. Please guide me about the sensors and the controllers that i can use . Thanking you in advance :)
interfacing between micro and ac 220 V you need optocoupler ang try controlling the motor using phase ship method
hi. the paralle port is very limited as a current source. It you overload it, you will damage your motherboard. try using an isolation circuit to prevent loading. The ULN is good motor driver but you have to ensure proper isolation. interfacing problem is a common in this kind of setup. better check the data sheets for the parallel port and your de
Posted: Mon Nov 17 2008, 05:33PM Hello, I have Successfully Operate to ON/OFF 220V AC Devices with 8051,ULN2803 and Relay. My Question is that ... Is there a Need of interfacing Opto-coupler for operating 220 AV Devices? Suggest me any Opto coupler IC No. any other Advantage of Opto-coupler.. Gurpreet Singh
See AN521 interfacing to AC power lines and TB3013 Using the ESD Parasitic Diodes on Mixed Signal Microcontrollers
Hi, I am designing a 8051 microcontroller system. It has ports for interfacing. How can I control a 230V 100W Electric Bulb using 8051 microcontroller ports? In essence, how do we control high voltage applications using 8051 microcontroller? Sincerely, Srinivas Nayak Below are some options: - relay dri
I am going to single phase energy meter measuring project by using pic16f877a.anybody plz help me how to interface pic16f877a with ade7753.i need interfacing circuit of pic16f877a+ade7753. thanks in advance......plz help me.
Im going to do project on dc energy meter design - using LEM sensors,energychip,PIC In that planning to use ADE 7751.. Will it work for DC signal??it is a single phase energy chip DC voltage and current can give to that? next the output from the chip is energy or power?? by interfacing chip with PIC gives the energy or the i