DasPreetam
Advanced Member level 4
Hi all,
I've made a Remote Controlled switch using TSOP1738, a Timer 555 and a CD4017. The working is this :
1) The 555 timer is set to monostable mode with the trigger input connected to the output of TSOP1738
2) Whenever pulsed IR falls on the TSOP1738, it triggers the timer.
3) The timer drives the clock of CD4017.
4) The CD4017 is wired in such that way that the output appears as follows Q0, Q1 then again Q0, Q1 and so on
5) The output of the CD4017 is hooked to a relay via a driver transistor.
Now when I power on and press any button on the remote. The output toggles, as expected.
The problem starts when any appliance on the house is switched on/off... for eg: Fan, lights etc, the output toggles !! First I thought the cheap chinese AC-DC SMPS circuit is faulty, so I replaced is with a simple most basic linear power supply with a 12V transformer, bridge rectifier, 1000 uF capacitor and 7809 regulator... There's also a 5V zener for the TSOP1738...
But the problem still occurs. Any solution ?
I've made a Remote Controlled switch using TSOP1738, a Timer 555 and a CD4017. The working is this :
1) The 555 timer is set to monostable mode with the trigger input connected to the output of TSOP1738
2) Whenever pulsed IR falls on the TSOP1738, it triggers the timer.
3) The timer drives the clock of CD4017.
4) The CD4017 is wired in such that way that the output appears as follows Q0, Q1 then again Q0, Q1 and so on
5) The output of the CD4017 is hooked to a relay via a driver transistor.
Now when I power on and press any button on the remote. The output toggles, as expected.
The problem starts when any appliance on the house is switched on/off... for eg: Fan, lights etc, the output toggles !! First I thought the cheap chinese AC-DC SMPS circuit is faulty, so I replaced is with a simple most basic linear power supply with a 12V transformer, bridge rectifier, 1000 uF capacitor and 7809 regulator... There's also a 5V zener for the TSOP1738...
But the problem still occurs. Any solution ?