In an electronics circuit, what is the purpose of a diode?
Correct answer: It only allows electrical flow in one direction

TestyAlien3443
1 diode by itself can be a half-wave rectifier (allows a positive wave, blocks a negative wave). A bridge (full-wave) rectifier needs 4 diodes: a diode for each (2-wire) power connection, plus a diode for each crossover/reverse connection.

Player en_846
A/C D/C could have been called The Diodes.

Jonesy
1 diode by itself is not a rectifier. 4 diodes connected together in the correct configuration will rectify Alternating Current (A/C) into Direct Current (D/C).

That Cøunt, Ray Bumpkin
Jonesy, otherwise known as a Wheatstone Bridge.

Player Say what!?
40 years ago while working for Western Electric, (Bell System) I had to take a basic electricity course and learned about diodes. now all I remember anymore is the color code for diodes. The class got progressively harder and harder which gave me an appreciation for electricians.

KingSwift36
Meeple, Good one McFly....

Meeple
Flux capacitor. lol