Your circuit will work in concept. The BC337 can carry up to 500 mA (keep it below 300 mA to be safe (R = 39 or more). The problem is that your TIP42 can only carry 6 amps for a continuous current (10amps pulse with short duty cycle). Also a problem with TIP42 as a switch means the gain is too low. The TIP42 has only 15x gain when over 3 amps. That means you need base current of one amp or more. Most people would suggest even higher for a fast switch.Hi
Will try this instead of Relay.
Can it be done, and what value for resistor ?
I think you will find that people are more willing to help those who are trying to learn than those who just want the work done for them. This is very basic stuff about transistors, gain, etc.i will not fried anything, so i need to know if this setup will Work for output up to 16A 12-15V max drawn current at input must be 10 mA
The BC337 is a TO-92 package in my post #8, the MOSFET is a TO-220 and the best option I see iseverything is possible, have asked here before, but no help.
Need help to calculate the value of resistors and help chosing the right transistor and mosfet.
only thing, to-92 or similar to transistor and TO-220 to mosfet, and do i need cooling ?
the input is a constant 12-15v not a pulse.
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