ngtkadackel
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Hi All,
I need some information regarding MOSFET as switch.
Scenario:
I want to make a 12V led strip dimmable which consumes 1200mA. I am using Arduino PWM to control the brightness. I have seen some circuits with P channel MOSFET where its gate is driven by an npn transistor. And also some people suggest to N channel MOSFET. I have some queries regarding these two circuit.
1. If I am using N channel MOSFET, which MOSFET will have Vgs = 5V, and can I give PWM out directly to gate of the N channel MOSFET?
2. If I am using P channel MOSFET why the gate is driven by npn transistor ?
I need some information regarding MOSFET as switch.
Scenario:
I want to make a 12V led strip dimmable which consumes 1200mA. I am using Arduino PWM to control the brightness. I have seen some circuits with P channel MOSFET where its gate is driven by an npn transistor. And also some people suggest to N channel MOSFET. I have some queries regarding these two circuit.
1. If I am using N channel MOSFET, which MOSFET will have Vgs = 5V, and can I give PWM out directly to gate of the N channel MOSFET?
2. If I am using P channel MOSFET why the gate is driven by npn transistor ?