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Triac switching
Hey Can any body explain me why in first picture triac switch to ON but in second is OFF?
Wednesday, 6 January 2021 - 19:43
optotriac example
Hello all can anybody explain how following circuit works? in other word Triac gate how stimulated?  
Monday, 4 January 2021 - 17:22
connect 2 AC Bridge Ground
Hey all in the following picture if we connect BR3 output to ground one of the diode bridge will be fault!! what is the problem?
Friday, 11 December 2020 - 10:26
Atmega8 MCU,QMC5883 Magnetometer,AT24C512 eeprom,ADM3485 Rs485 hangs
Hey all, I have a Board such as an Atmega8 MCU,QMC5883 Magnetometer,AT24C512 eeprom,ADM3485 Rs485 IC. reading from QMC is doing every 10ms by Interrupt pin. When I send a data to...
Saturday, 21 November 2020 - 06:44
Parallel resistor in RS-485
Hey all What is the parallel-120-ohm resistor in start and finish of a RS-485 line? if we disconnect it what will be happen? tnx.    
Thursday, 5 November 2020 - 07:46
build a voltmeter
Hey all, I wanna to build a voltmeter by atmega8A, Which circuit should I use? tnx
Sunday, 27 September 2020 - 07:23
AC / DC coupling in oscilloscope
Hello all When we connect Oscilloscope to AC Electrical Network (50Hz City power) it shows in AC/DC coupling mode but if connect after rectifier (diode bridge) it doesn't show any...
Wednesday, 16 September 2020 - 11:47
Mosfet Driver Supply
Hello all In following datasheet there are 3 Vcc for IC supply why????      and in the next picture Vcc2-2 is output voltage .
Sunday, 13 September 2020 - 07:32
IR Transmitter / Receiver
Hello all I want to build a circuit to detect movement in one axis. I use a IR transmitter / receiver but I have some questions. 1-How I can set transmitter diode current that...
Tuesday, 11 August 2020 - 19:35
High accuracy position device (like GPS)
In a project, we need the exact location of the products (with an accuracy of finally two centimeters) Can anyone make a circuit to make a GPS with this precision?
Friday, 31 July 2020 - 17:39
Clear Time of a fuse
Hello all, I have a 0.375A fuse (0603 package and SMD). The I2t value is 0.005 A2.Second. It means by 375 mA current it will be blown in 35 m Seconds? I do this (carry 375mA...
Saturday, 4 July 2020 - 13:14
LCD TS 1620 V.1
Hello all how much is the voltage of the TS 1620 V.1 LCD Is it possible to work with 3.3V? following picture is datasheet of it but it is confusing.  
Monday, 22 June 2020 - 05:49