Oct 14, 2011 #1 M muthuk Newbie level 2 Joined Sep 2, 2011 Messages 2 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,292 we design a pulse counter circuit in pic16f877a.sensor is npn or pnp.also this sensor operating voltage is24v.so i need perfect isolation circuit using opto coupler and driving circuit for pulse to the input of pic.anybody give me the circuit?
we design a pulse counter circuit in pic16f877a.sensor is npn or pnp.also this sensor operating voltage is24v.so i need perfect isolation circuit using opto coupler and driving circuit for pulse to the input of pic.anybody give me the circuit?