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  1. M

    Assistance with Transistor Theory

    Electrically they are equivalent. But at open circuit the Norton version is dissipating at least (Imax*Imax*Req) and the Thevenin is dissipating nothing (somewhat ideal sources). So you can tell which is which by which one is dissipating the most/least heat at open circuit.
  2. M

    Mains voltage transistor switch?

    Yes use a Solid State relay as bobk says. You could also use your arduino to drive a MOC3020 to drive a triac. Might be cheaper. You could just use a relay.
  3. M

    Wiring slide switch to have rotary switch behavior

    No. Sounds more like a slide switch.
  4. M

    Assistance with Transistor Theory

    Wow, what a discussion! Either model works, voltage(ebers moll) or current, but the current is easier to use generally. It's like modelling a voltage source with resistance as a Norton Equivalent Circuit (Current) or a Thevenin Equivalent Circuit(Voltage), they both work and give the same...
  5. M

    Assistance with Transistor Theory

    Technically it flows into the base, into the collector and out the emitter for NPN.
  6. M

    Assistance with Transistor Theory

    1. There is a tradition in electronics that dates back to before electrons were known to be negative charge carriers, that current flows from positive to negative. That is why schematics have the positive supplies above the negative, to show a downward flow like gravity. In semiconductors both...
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