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How to use a transistor as an on-off switch?
In my current configuration the transistor varies its collector-emitter resistance between 0.1ohm and 100M. At the resistance values in the middle the transistor gets very hot and dissipates a lot of power.
I need to know how to make the transistor tend to be on or off, spending very little time in between. Would higher gain help? Certain zener configuration maybe?
What are your thoughts? Thanks for your expertise!
1 Answer
- billrussell42Lv 71 decade agoFavorite Answer
That is the way transistors operate. Very high resistance is the cutoff state, the off state, very low resistance is the saturated state, the on state, and in between is the active region.
You need to provide more details, but I can give you a few hints.
Whatever your signal to the base is, make it transition between off and on quickly and cleanly, and then it spends less time in the active region.
email me with details and your circuit.
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