If you are the account owner, electronic speed switch pdf submit ticket for further information. Please forward this error screen to 198. Looking for Latest Electronics Project Kits? Here is a versatile remote controlled appliance switch that can ON or OFF any appliance connected to it using a TV remote.
IR remote sensor IC TSOP 1738 is used for recieving the signal. Normally when no signal is falling on IC3 the output of it will be high. When a signal of 38 KHz from the TV remote falls on the IC3 its output goes low. This makes Q1 conduct and a negative pulse is obtained at pin 2 of IC 1 NE 555. Due to this IC1 wired as a monostable multivibrator produces a 4 Sec long high signal at its out put.
Circuit Diagram with Parts List . Before wiring the circuit make sure that the carrier frequency of the TV remote you have is 38 KHz. For that wire the sensor part only ,point your remote to the TSOP1738 and press any switch. If out put of TSOP1738 goes low them ok, your remote is of 38Khz type. Nothing to worry almost all TV remote are of this type. You can use any switch because for any switch the code only changes,the carrier frequency remains same.
We need this carrier frequency only. Assemble the circuit on a good quality PCB or common board. The appliance can be connected through NO or NC and contacts of the relay . Need help in building this remote circuit, contact me. Seetharaman, what is positive fail safe switching. Seetharaman, what is positive fail switching.
If u need assistance in building this circuit, just call me, i have built it. BC 158 and SL 100 pls it urgent. I need replacements for bc158 and SL100 pls it urgent sir. You can connect 6volt 100 mA relays 3 nos in parallel. You can use the single relay’s NO contact to switch any number of relays in parallel. All capacitors can be of working voltage a min of 12 volt and max up to 63 volt DC. Sir, i want to design remote controlled home appliance ckt but in this circuit which type of relay used?