Differences Between NPN and PNP Transistors

Key Differences Between NPN and PNP Transistors:

1. Current Flow:

   - NPN: Current flows from the collector to the emitter when a positive voltage is applied to the base.

   - PNP: Current flows from the emitter to the collector when a negative voltage is applied to the base.

2. Symbol Direction:

   - NPN: The arrow on the emitter points outward.

   - PNP: The arrow on the emitter points inward.

3. Application:

   - NPN: Commonly used in circuits where a positive voltage is applied.

   - PNP: Used in circuits where a negative voltage is applied.

4. Carrier Type:

   - NPN: Uses electrons as the majority charge carriers.