The diode used in the suppression circuit shown:
A)is connected in forward-bias to suppress DC loads.
B)is connected in reverse-bias to suppress DC loads.
C)is connected in forward-bias to suppress AC loads.
D)is connected in reverse-bias to suppress AC loads.

Question

The diode used in the suppression circuit shown: 
A)is connected in forward-bias to suppress DC loads. 
B)is connected in reverse-bias to suppress DC loads. 
C)is connected in forward-bias to suppress AC loads. 
D)is connected in reverse-bias to suppress AC loads.

Quizplus · Accepted Answer

The diode is connected in reverse-bias configuration to suppress voltage spikes that occur due to the inductive load (ignition coil in this case). In reverse-bias, the diode acts as an open switch that blocks current flow during normal operation. However, when a voltage spike occurs, the diode quickly conducts and provides a path for the current to flow, diverting the spike away from the rest of the circuit and preventing damage to sensitive components. This is commonly known as a "flyback diode" or "snubber diode" circuit.

The Diode Used in the Suppression Circuit Shown