Diode Anode To Cathode

June 13, 2017

The opposite of an anode is a cathode. The cathode is the source of electrons or an electron donor.

1 Schematic Of Diode Showing The Cathode And Anode

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Below are a few examples of diodes.

Diode anode to cathode. The anode is the arrow shaped end while the cathode is the bar shaped end. Apparently somebody was under the misimpression that anodecathode referred to structure instead of function. Well that is if you.

Usually the diode will have a line near the cathode pin which matches the vertical line in the diode circuit symbol. When a voltage source is connected to a diode such that the positive side of the voltage source is on the anode and the negative side is on the cathode. When the current through the device is reversed the electrodes switch functions so anode becomes cathode while cathode becomes anode as long as the reversed current is applied with the exception of diodes where electrode naming is always based on the forward current direction.

You can remember this by recalling that current flows from anode to cathode in an ordinary diode. You should never use the terms anode or cathode to describe the structural parts of a zener diode for the same reason you should not use such terms for the structure of a rechargeable battery. The top diode a 1n4001 rectifier has a grey ring near the cathode.

The positive side of the diode that is the lead attached to the p type semiconductor is called the anode. Thus the cathode is the negative side of the diode. It may accept positive charge.

Because the cathode may generate electrons which typically are the electrical species doing the actual movement it may be said that cathodes generate charge or that current moves from the cathode to the anode. Physically every diode should have some sort of indication for either the anode or cathode pin.