tijoseymathew
Member level 4
hi
I designed this circuit for obstacle detection. The ir led is switched at 4kHz by the PIC . this is detected by the photodiode and KX567 to cancle out interference. As you would have seen i have left out the capacitor at pin 1 of the ic. Still the circuit is working. but the datasheet recommends a greater thatn 1uf cap on pin 1. when i use the cap i get a continous high signal onthe output.
what could be the reason ?
will the circuit be stable at all conditions???
I designed this circuit for obstacle detection. The ir led is switched at 4kHz by the PIC . this is detected by the photodiode and KX567 to cancle out interference. As you would have seen i have left out the capacitor at pin 1 of the ic. Still the circuit is working. but the datasheet recommends a greater thatn 1uf cap on pin 1. when i use the cap i get a continous high signal onthe output.
what could be the reason ?
will the circuit be stable at all conditions???