Logic circuit diagram

Thread Starter


Joined Feb 2, 2010
Any one with a solution?
1. Using relays and single pole switches draw the circuit diagrams for the following:
a) Two input AND function
b)Two input OR function

note: The coil of each relay is connected to a separate switch

2. construct and prove each of the above circuits.

3. Draw the circuit diagram for a 2-input NAND gate using relays.
Last edited:


Joined Dec 27, 2009
The answers are very simple so at least have a go and post how you think it might be done. Then we can help you learn by coaching you through it, rather than just giving you the answers. Bummer eh?