NPN vs PNP

NPN and PNP are two different modes of operation for transistors. Transistors are devices used in electronic circuits to control signals and power.

+ NPN transistors: These consist of three cores: an emitter (output) that is conductive with a neutral (ground) core, a base, and a collector that is also conductive with a neutral core. NPN transistors work by applying a voltage to the anode (positive) terminal through the base core, while decreasing the resistance between the emitter and collector. In this mode, transistors operate as an anode-collector (A-C) circuit.

+ PNP transistors: These consist of three cores: an emitter (output) that is conductive, a base, and a collector that is conductive with a neutral (ground) core. PNP transistors work by applying a voltage to the cathode (negative) terminal through the base core, while increasing the resistance between the emitter and collector. In this mode, transistors operate as a cathode-emitter (C-E) circuit.

The difference between NPN and PNP transistors is their mode of operation. NPN transistors work with a voltage applied to the anode terminal, while PNP transistors work with a voltage applied to the cathode terminal. This determines how the transistors operate as an anode-collector (A-C) or cathode-emitter (C-E) circuit.

NPN vs PNP sensor types?

NPN and PNP are two different types of sensors that are used to measure physical variables such as temperature, air pressure, gas concentration, and others in electronic circuits.

+ NPN sensors: These sensors transfer their output signals from the sensor to the anode (positive) terminal through a collector that is conductive with a neutral (ground) core, and through a base and an emitter (output). NPN sensors operate as an anode-collector (A-C) circuit.

+ PNP sensors: These sensors transfer their output signals from the sensor to the cathode (negative) terminal through an emitter (output) and a base, and through a collector that is conductive with a neutral (ground) core. PNP sensors operate as a cathode-emitter (C-E) circuit.

The difference between NPN and PNP sensors is how they transfer their output signals. NPN sensors transfer their output signals to the anode terminal, while PNP sensors transfer their output signals to the cathode terminal. This determines how the sensors operate as an anode-collector (A-C) or cathode-emitter (C-E) circuit.