Mosfet TESTER
The described circuit employs an astable multivibrator configuration, which is a type of oscillator that continuously switches between its high and low states, producing a square wave output. In this setup, the MOSFET acts as a switching element that controls the operation of the LED. When the MOSFET is functioning correctly, it allows current to flow through the LED, causing it to flash at a frequency determined by the timing components of the multivibrator.
The astable multivibrator circuit typically consists of a pair of resistors and a capacitor connected to a voltage source and the MOSFET. The resistors set the charge and discharge times of the capacitor, which in turn determines the flashing rate of the LED. The MOSFET is integrated into the circuit to provide efficient switching, allowing the LED to be turned on and off rapidly without significant power loss.
It is important to note that the circuit's ability to test MOSFETs is limited. While it can indicate whether a MOSFET is operational by observing the LED's behavior, it does not diagnose all potential failure modes or conditions that may affect the MOSFET's performance. Therefore, this circuit serves primarily as a basic visual indicator of MOSFET functionality rather than a comprehensive testing solution. Proper testing of MOSFETs may require more sophisticated equipment and methods to assess parameters such as threshold voltage, on-resistance, and switching characteristics.I dont claim circuit can test all bad mosfets or all fault mosfet conditions. If mosfet is working it will operate in the astable multivibrator circuit causing the Led to flash. 🔗 External reference
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