Explain how the alignment of a diode in a circuit allows it to act as a switch?

Question

Explain how the alignment of a diode in a circuit allows it to act as a switch?

Answer 1

It only allows current to flow in the direction of the polarity.  Stops it from going the other way.  The polarity mark on the diode is the direction that the current flows.

This is basically.  Not too much information.

Answer 2

One example is a diode will rectify AC  if it is wired to the normally open side of a micro switch, this will prevent the coasting of the motor stator.  

Answer 3

Diode acts in two ways.

1. it will conduct in one direction only and hence blocks negative voltage reaching the other side in which is connected in series.

2. diode will conduct only when its anode is 0.7V  positive with respect to its cathode. hence if you keep the voltage of anode at higher potential it will act as a switch.

3. many circuits like limiter, clipper and demodulation/detection etc are carried out by the simple diode.

Answer 4

a diode is directional only allowing current to pass in one direction.

Answer 5

Diode conduct signal from anode to cathode.

If you apply some voltage at the cathode which is 0.7V or more higher

than voltage of signal that comes to anode, signal will be blocked.If you remove that higher voltage from cathode, signal will pass trough diode, from anode to cathode.

Source(s):

I am an tv repair man :)