J jaj540 New Member Jul 1, 2011 #1 we hav to interface a spdt relay(20 amps) with pic32.. is there any available interfacing diagram for the same... pls help us... urgent
we hav to interface a spdt relay(20 amps) with pic32.. is there any available interfacing diagram for the same... pls help us... urgent
Noggin Member Jul 2, 2011 #2 Here's some information on it: https://www.electro-tech-online.com/threads/can-a-pic-drive-a-relay.1611/
Here's some information on it: https://www.electro-tech-online.com/threads/can-a-pic-drive-a-relay.1611/
Jon Wilder Active Member Jul 3, 2011 #3 You could use a transistor circuit to drive it. Does the relay coil itself draw 20 amps?
G grevillea New Member Jul 4, 2011 #4 I believe that a common approach is to drive the coil with a transistor or Darlington array. e.g. ULN2803. You also want a reverse biased diode across the coil to absorb the inductive emf when the transistor switches off.
I believe that a common approach is to drive the coil with a transistor or Darlington array. e.g. ULN2803. You also want a reverse biased diode across the coil to absorb the inductive emf when the transistor switches off.