How to make variable voltage to drive an electronic circuit
Electronics • Hacks, Mods & Circuitry
This video is made for beginners in electronics and all people interested in these matters. They show how to create some basic-circuits. Many electronic phenomena are left out. Here you see how to create a variating voltage to drive an electronic (detection) circuit or detect current when a transistor or tube is used as a current amplifier. There is one omission in the tube-circuit: you need a resistor from cathode to minus (earth) to really get a negative grid voltage, I mean more negative then ground level (0), sorry. This matter is on two other videos on my channel. Ohms law (U=IXR, voltage = amps x resistance) can be applied on the drawn circuits.
