Posted by Circuits Arena on Tuesday, 6 January 2015
Remote Controlled Switch is the artlcle explaining Remote Controlled Switch : IR remote device IC TSOP 1738 is employed for recieving the signal. ordinarily once no signal is fallin...
Remote Controlled Switch:
IR remote device IC TSOP 1738 is employed for recieving the signal. ordinarily once no signal is falling on IC3 the output of it'll be high.This makes Q1 OFF.When a symptom of thirty eight kilohertz from the TV remote falls on the IC3 its output goes low.This makes Q1 conduct and a negative pulse is obtained at pin two of IC one NE 555.Due to this IC1 wired as a monostable multivibrator produces a four Sec long high signal at its out place.This high out place is that the clock for IC two that is wired as a Flipflop and of , its 2 outputs pin three goes low and pin two goes high.The high output at pin two is amplified to drive the relay .For following signal the outputs of IC2 toggles state. Result, we have a tendency to get a relay toggling on every go on the remote.Any appliance connected to the present circuit will be switched ON or OFF.
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.
