All,
New to the forum. Have a circuit (see attached pdf) to add speed control to a Solar panel-powered DC fan. The circuit works and allows good speed control of the fan. But the 2N3055 transistor which has a healthy heatsink and thermal grease is getting too hot, since this will be in use a lot I don't want to fry the circuit.
Not a real transistor guru so I suspect I have missed something or did something dumb, any help or insight would be greatly appreciated.
Bill
New to the forum. Have a circuit (see attached pdf) to add speed control to a Solar panel-powered DC fan. The circuit works and allows good speed control of the fan. But the 2N3055 transistor which has a healthy heatsink and thermal grease is getting too hot, since this will be in use a lot I don't want to fry the circuit.
Not a real transistor guru so I suspect I have missed something or did something dumb, any help or insight would be greatly appreciated.
Bill
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