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diode in parallel in rectifier

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Hi,
The ressistor has not to be necessary...with rising current through a diode the forward voltage will rise too, so the parallel diode takes more of the current.
If the diodes are the same type it should generally work...how ever I would not double the maximum current ability with two diodes...would recommend a 1,5x max
 
Hi,

The problem is forward voltage drops with temperature
so you cannot rely on diodes to reliably share current,
one diode can current hog, so no resistor is wrong.

Bigger diodes as a replacement is the proper way to do it.

rgds, sreten.
 
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