Current Mirror Circuit Mosfet. This is basic circuit. 1 4 thus by controlling the geometry of the two mosfets one can control the ratio of the two drain currents.
In next videos we will cover cascode current mirror wilson current mirror etc. In the left side the current mirror circuit using 2n2222 bjt is shown where two identical transistor pair is used. We know that for a mosfet in saturation the drain current is equal to.
Ds gs v v and thus.
This same thing is created for the 2n6660 mosfets. Note d g v v therefore. Instead of the programming resistor a potentiometer is used to control the current flow in the live simulation. A current mirror is a circuit designed to copy a current through one active device by controlling the current in another active device of a circuit keeping the output current constant regardless of loading.
