The diodes are the electronic part of the alternator that convert AC voltage to DC. Switch your multimeter to the lowest AC setting and reattach the test leads to the battery.

We're going to answer all your questions about alternator replacement, repair, and the cost involved to do it yourself or have a pro handle it.

Start by removing the pulley nut, washer, and fan assembly from the front of the alternator. Next, remove various screws that hold together different exterior components like the rear cover plate, ...

Now, if you happen to be a mechanic, you could take the alternator apart, pull out the dead diode bridge, order another one, replace it, and reassemble the alternator.

Replacement alternators rarely fail as a result of manufacturing defects, but often quit because the root cause of the original failure wasn’t addressed. Load testing with a resistive load such as a ...

Denso has announced that it has developed a high-efficiency diode for alternators for gasoline and diesel engine vehicles with the semiconductor supplier, Hitachi Power Semiconductor Device.

SLLD can be adopted as a drop in replacement device to conventional Zener diodes in alternator manufacturing lines providing high efficiency performance as well as convenience. Published in: PCIM ...

Design of low-cost voltage sensing method of three-phase synchronous rectifiers with high-efficiency for automotive alternators is proposed in this paper. A new control strategy and low-cost circuitry ...

The company noted that certain alternators supplied to the Company may be subject to premature diode wear following frequent load cycling, at or near maximum amperage, in hot ambient temperatures ...