forward conduction การใช้

The diode must immediately enter into forward conduction mode as the driving current is interrupted.
When diodes switch from forward conduction to reverse cut-off, a reverse current flows briefly as stored charge is removed.
By injecting minority carriers ( holes ) from the collector p + region into the n-drift region during forward conduction, the resistance of the n-drift region is considerably reduced.
It operated similarly to the thermionic vacuum tube diode, but the gas in the tube ionized during forward conduction, giving it a much lower forward voltage drop so it could rectify lower voltages.
This reduces the overall capacitance and the capacitance range by half, but possesses the advantage of reducing the AC component of voltage across each device and symmetrical distortion should the AC component possess enough amplitude to bias the varicaps into forward conduction.