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Tool Talk Discussion Forum

Re: John T Electrical question

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Bob M

12-12-2012 16:08:32

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Hey John T - Those are my thoughts exactly!
A bit more capacitance won't hurt. But adding too much (ie. an additional cap) risks damage to the rectifier circuit when the unit charges due to the higher inrush current it must now handle.

ALSO......increasing capacitance beyond design translates into much greater peak current pulses when the caps discharge. This MAY damage other parts in the circuit. Further, it could become a life safety issue should you accidentally contact the fully-charged capacitor bank or the output wiring.

I'd replace the caps with the same capacitance value and leave it alone.

Bob M, the retired ME.

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12-13-2012 05:19:57

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 Re: John T Electrical question in reply to Bob M, 12-12-2012 16:08:32  
There are so many things to consider when designing circuitry. In-rush current, charge transfer, wattage rating of down stream components. Without looking at the circuit in detail it is hard to give a good opinion.

I will agree with Bob, Same capacitance, same voltage, leave it alone.

Active EE circuit designer

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John T

12-12-2012 17:24:49

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 Re: John T Electrical question in reply to Bob M, 12-12-2012 16:08:32  
Hey if BOTH a Mechanical and an Electrical Enginner agree........WE ARE SURELY RIGHT LOL

John T

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