elecfriend
New Member
I am using IR LED in my circuit. Ready-made 12V DC switching supply is used. I have noticed that IR receiver produces pulses without any signal. When switching supply is replaced, the false triggering of IR receiver stopped. There is no any ripple or noise in problem switching when observed by oscilloscope. Filter capacitor of 10M and 47R resistor are used at IR pins accordingly.
What may be wrong with faulty switching supply?
What may be wrong with faulty switching supply?