Question

What is the difference between normal diode and freewheeling diode?

Answer 1

A “freewheeling diode” is a diode that’s used in a particular way, to provide a path to dissipate the energy stored in an inductive component, like a relay or motor, when the current source is disconnected. It’s not a particular kind of diode. Depending on the inductance involved, a general-purpose silicon rectifier diode or even a signal diode can be used.The word “freewheeling” is an analogy with a mechanical freewheel. Just as a freewheel allows a wheel to turn without applying torque to the shaft, a freewheel diode allows the current in an inductor to “coast to a stop” without applying a voltage to the other components in the circuit.

Answer 2

Answer:

Under reverse biased condition, the diode stops conducting and functions as an open switch. So, a Freewheeling (Flyback) diode operates in the same way that it conducts in forward biased condition but do not conducts in reverse biased condition.

Explanation:

Free wheeling diode

Freewheeling diode is used to protect the circuit from unusual damage caused due to abrupt reduction in the current flowing through the circuit. It is also known as Flyback diode and forms connection across the inductor to remove Flyback voltage generated across it. Freewheeling diodes are also known as kickback diode, clamp diodes, commutating diodes, suppression diodes, or snubber diode etc.

Normal Diode

A diode is a device that allows the flow of current in only one direction. When connecting a P side of a diode to the positive voltage side and the N side to the negative voltage side, the diode is forward biased. The diode conducts only when forward biased that is it allows current,

The diode does not conduct only when reverse biased that is it blocks current. An ordinary diode is a device with a very low reverse current across it in the micro-ampere (A) range. When a normal diode is run in reverse bias, it gets destroyed.

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