1 Answer
A thermistor can be used in both AC (Alternating Current) and DC (Direct Current) circuits. However, the type of current depends on the specific application:
The important thing is that the thermistor’s resistance changes with temperature, and this property is effective for both AC and DC. In AC circuits, however, the thermistor may experience more heat variation due to the alternating nature of the current, which could affect its response.
- DC circuits: Thermistors are commonly used in DC circuits for temperature sensing and control, such as in power supplies, battery chargers, or temperature regulation systems.
- AC circuits: Thermistors can also be used in AC circuits, like in temperature protection for motors, heating systems, or in surge protection circuits.
The important thing is that the thermistor’s resistance changes with temperature, and this property is effective for both AC and DC. In AC circuits, however, the thermistor may experience more heat variation due to the alternating nature of the current, which could affect its response.