Re: What's the deal with full-wave rectifiers?
^ I've seen failed discrete diodes, it usually happens when they aren't over-spec'd. Sometimes it's just a heat density issue with them delaminating the trace then breaking the joint, but either way it's still a failure.
While it is true that on cheap PSU using the discrete diodes that you'll tend to see capacitors or transistor failure first, that's a reason for improved caps and transistors in addition to the rectifier, not to just ignore it because it is assumed the product will have premature failure.
To the manufacturer the bottom line is profit, but at the same time they still opt for these higher current rated diode bridgess on less budgetized PSU designs. If it really didn't matter I don't think they would put any of the construction budget into it.
^ I've seen failed discrete diodes, it usually happens when they aren't over-spec'd. Sometimes it's just a heat density issue with them delaminating the trace then breaking the joint, but either way it's still a failure.
While it is true that on cheap PSU using the discrete diodes that you'll tend to see capacitors or transistor failure first, that's a reason for improved caps and transistors in addition to the rectifier, not to just ignore it because it is assumed the product will have premature failure.
To the manufacturer the bottom line is profit, but at the same time they still opt for these higher current rated diode bridgess on less budgetized PSU designs. If it really didn't matter I don't think they would put any of the construction budget into it.
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