I was wondering that. So instead of the "base" we have the gate, will this setup be acceptable for that?I think you would be better off using an FET.
It is and I was wondering that myself. Off the top you of your head (besides the fact that this is more of a FET application), do you have a recommendation of a circuit that would cut off the power the circuit when the slide switch is in the off position? I wish I could just make the different positions pull down to ground and have the signals be active high (switch 3 and 4 from gnd to 3V) and have a pchannel FET turn off the rest of the circuit when the gate is high but that would leave current still going to the FET.In the 'off' position current flows through the 330R resistor. Hope this isn't battery powered!
Good call. It would work for fully charge batteries but could definitely do without the voltage drop.Note that the output of transistor emitter is about 0.7V below VIN+.
Is that acceptable for you application?
And this is a problem because?a pchannel FET turn off the rest of the circuit when the gate is high but that would leave current still going to the FET.
Thanks Irving,There are chips that'll do this job far better/cheaper than discrete parts eg SLG59M1709V or NCP45560IMNTWG.
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