What Does A Flywheel Diode Do

- February 27, 2019

A snubber circuit protects the rest of the circuitry from a magnetic coil. The opening of contacts is very important because a low value resistor is placed in series with the diode which helps in dissipating the coil energy faster.

Lighting For Everyone The Steemit Way Steemit

Forum For Electronics

What Is A Flyback Diode

An engineer can deal with the inductors electrical energy by putting a diode in parallel with inductor.

What does a flywheel diode do. This is due to the continuous circulation of current in the diode and the relay coil. Without the diode the inductor voltage would spike way way up which is a waste of energy and could damage components. Flywheel diode may cause delay drop put of contacts when the power is removed and dc coil relay is used.

The use of a diode in a relay circuit prevents huge voltage spikes from arising when the power supply is disconnected. It is used in circuits in which inductive loads are controlled by switches and in switching power supplies and inverters. A flyback diode is sometimes called flywheel diode relay diode or snubber diode as a flyback diode circuit is a type of snubber circuit.

A flyback diode is actually a type of snubber circuit. A flyback diode is a diode connected across an inductor used to eliminate flyback which is the sudden voltage spike seen across an inductive load when its supply current is suddenly reduced or interrupted. The diodes anode side is connected to the positive side of the circuits power source and its anode connects to the sources negative side.

A snubber circuit also reduces the rf interference being transmitted from the circuit. A flywheel diode is used to conduct the energy stored in an inductor to some useful end or just to dissipate it.