Hi
I've just joined in the hope that someone can explain something that is beginning to really bug me.
I need to produce a negative DC from an AC transformer voltage, and realise I can do this through a half wave rectifier. What I don't understand is how.
This contains a reverse biased diode, which I assume only lets the negative wave of the AC current through.
What I cannot get into my head is how the reverse biased diode allows current through when biased this way.
Surely the whole point of the diode is to only allow flow when positively biased.
I realise I'm being extremely thick, but having endlessly read it up, all I can find is schematics showing rectifier circuits, and articles stating that reversed biased rectifier diode will not let current through.
Any assistance will be much appreciated.
I've just joined in the hope that someone can explain something that is beginning to really bug me.
I need to produce a negative DC from an AC transformer voltage, and realise I can do this through a half wave rectifier. What I don't understand is how.
This contains a reverse biased diode, which I assume only lets the negative wave of the AC current through.
What I cannot get into my head is how the reverse biased diode allows current through when biased this way.
Surely the whole point of the diode is to only allow flow when positively biased.
I realise I'm being extremely thick, but having endlessly read it up, all I can find is schematics showing rectifier circuits, and articles stating that reversed biased rectifier diode will not let current through.
Any assistance will be much appreciated.