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Metal-Oxide-Semiconductor Field-Effect Transistor, a type of field-effect transistor (FET). MOSFETs have an insulated gate, the voltage of which determines the conductivity of the device. This can be used for amplifying or switching electronic signals. (From: Wikipedia)

7 votes
1 answer
6k views

Load Sharing charging circuit for Lithium polymer

Which MOSFET should I select for this circuit? If my Load Current is 100mA max? What should be the Rd (on) and VGS(th) of the MOSFET which I can use in above circuit? … This leakage current will create a small voltage at the MOSFET gate which, if high enough, could cause the MOSFET to not turn back on properly when the main Vin power is removed. …
2 votes
3 answers
2k views

Elimination of transistor in 12V Switching Circuit

P-CHANNEL MOSFET (load connected between Drain and Ground): When the microcontroller output is LOW, the transistor is OFF and the gate of the P MOSFET is HIGH (12V). This means the P MOSFET is OFF. … When the output of the microcontroller is HIGH, the transistor is turned ON and pulls the gate of the MOSFET LOW. This turns the MOSFET ON and current will flow through the load. …