SPDT Relay XOR Gate

logic-gates

I've been trying to build some logic circuits with some SPDT relays I got for quite a while now and am quite confused. I've been able to make all of the basic logic circuits out of them except for the XOR gate.

This is probably a beginner question, but I am a beginner and can't find information on this anywhere. A diagram or explanation of a possible circuit would be made; preferably with only two relays.

Best Answer

Imagine the two way switch set up that can switch on and off a lamp in your hall from two different positions. That is the EXOR function - two mutually exclusive switches wired up so that either switch can invert the state of the lamp. How do they do that? Do you know? Can you figure that out? I'm not going to help further because you should do some research on this.

Related Solutions

Electronic – Uses for gate expressions, Nor and Xor

Truth tables:

NOR (NOT-OR) is more or less like NAND:

0 NOR 0 = NOT(0 OR 0) = NOT(0) = 1
0 NOR 1 = NOT(0 OR 1) = NOT(1) = 0
1 NOR 0 = NOT(1 OR 0) = NOT(1) = 0
1 NOR 1 = NOT(1 OR 1) = NOT(1) = 0

XOR emits 1 when the two inputs differ. You can consider this as binary addition without carry.

A XOR B = (NOT(A) AND B) OR (A AND NOT(B))

0 XOR 0 = 0
0 XOR 1 = 1
1 XOR 0 = 1
1 XOR 1 = 0

Electrical – Understand the JK Flip Flop Logic Diagram

Your simulator is running in to a what was first, the egg or the chicken? type scenario because to determine the output of the system the internal state of the gates must be resolved but because those internal state use the outputs the simulator cannot determined any of those states. As you can see the JK flip-flops you showed in the schematic they omit the circuitry for the CLR pin which would force the JK flip-flop into a known state

Best Answer

Related Solutions

Electronic – Uses for gate expressions, Nor and Xor

Electrical – Understand the JK Flip Flop Logic Diagram

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