How can the anode and the cathode of a diode be identified?

What will be an ideal response?


When the diode is to be connected in a circuit, there must be some means of identifying the anode and the cathode. Diodes are made in different case styles so there are different methods of identifying the leads. Large stud-mounted diodes often have the diode symbol printed on the case to show proper lead identification. Small plastic case diodes often have a line or band around one end of the case. This line or band represents the line in front of the arrow on the schematic symbol of the diode. An ohmmeter can always be used to determine the proper lead identification if the polarity of the ohmmeter leads is known. The positive lead of the ohmmeter must be connected to the anode to make the diode forward biased.

Trades & Technology

You might also like to view...

Which of the following statements is LEAST-Likely true?

A. Most cars have an electric grid baked onto the rear window. B. A window grid draws a relatively high amount of current up to 60 amps. C. Some vehicles use the rear window grid as the radio antenna. D. Damage to the grid can sometimes occur when tape or a decal is removed using a razor or knife blade.

Trades & Technology

If the parking brake is applied while the engine is running, the daytime running light feature is turned off.

Answer the following statement true (T) or false (F)

Trades & Technology

When a system pumps down, where is the refrigerant stored?

A. receiver B. evaporator C. condenser D. both a and c

Trades & Technology

Which of the statements about brake systems used on heavy-duty trucks is NOT true?

A. Class 8 trucks use air brake systems B. Current production trucks and trailers are equipped with ABS C. Disc brakes are not used on heavy duty trucks D. Some class 7 trucks have air-over-hydraulic brakes

Trades & Technology