Relay Logic Diagram Of Xor Gate

There is no limit to how many contacts per switch can be represented in a ladder diagram.

Relay logic diagram of xor gate. A primary design goal for the relay computer is to reduce the number of and cost of the relays. A diagram or explanation of a possible circuit would be made. Ladder diagram for x or gate logic. In ladder logic diagrams a normally open relay contact is drawn as a set of parallel lines almost like a non polarized capacitor in an electronic schematic diagram.

A parallel connection of the switches insures that the output of the or gate is driven high as long as at least one relay is active. A relay must be used to invert the output of a logic gate function while simple normally closed switch contacts are sufficient to represent inverted gate inputs. 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.

Relay logic part 1. The relay logic control works efficiently to perform basic on off operations by opening or closing the relay contacts but it involves a humongous wiring. Analyze the following relay logic circuit completing the truth table accordingly. Digital logic functions.

Xor logic and then its ladder equivalent. A spdt would work fine for building logic it would just take more of them and oddly enough dpdt switches seemed cheaper and easier to find. Contacts are logically equivalent to a not gate. Preferably with only two relays.

Xor gate also known as exclusive or gate is a logic gate which produces high state 1 only when there is an odd number of high state 1 inputs. The basics duration. With the relay as the basic building block i set about designing my own logic gates. This feature is not available right now.

It s fairly straightforward to make a relay computer with 250 relays but at 1 00 to 1 50 each the cost can be prohibitive for a demonstration machine. For 2 input gate it can be interpreted as when both of the inputs are different then the output is high state 1 and when the inputs are same then the output is low state 0. The two basic logic gates are the and gate and the or gate. The net result is the logical or of the three inputs.

Again a strongly driven high value at the output is interpreted as a logical 1 while an open floating output is interpreted as a logical 0. Relay logic basically consists of relays wired up in a particular fashion to perform the desired switching operations.