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Old 19th December 2006, 08:02 PM   #1
impsick is offline impsick  United States
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Default caps and diodes for the lm3886

i was wondering if its possible to use 50v 4700uf caps on the psu board (chipamps board) with motorola MR751 diodes instead of the recomended?

all i need to know is yes or no, explanation would be great but i dont want to waist all your guys time. thanks.
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Old 19th December 2006, 08:30 PM   #2
paulb is offline paulb  Canada
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Probably. What voltage is your transformer?
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Old 19th December 2006, 08:46 PM   #3
wboyd is offline wboyd  United States
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I used NTE fast switching diodes for my prototypes....same basic specs/tolerances. You should be fine, but just to make sure I would see if I could cross-ref the diodes and see how close they are.

On the capacitors, you should be fine...just stay within the voltage tolerances....

I have used some "Crazy High" capacitance....with great results. I salvage alot of old capacitors, well parts in general for my projects, and try to use what I have lying around before build the final product....

Have fun!!

Wayne
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Old 20th December 2006, 01:11 AM   #4
impsick is offline impsick  United States
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thanks guys for input.

paulb- i havent picked out a transformer yet. i have a few i pulled from older gear im just trying to figure out there ratings.
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Old 20th December 2006, 01:25 AM   #5
MikeW is offline MikeW  United States
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yes
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Old 20th December 2006, 01:36 AM   #6
wboyd is offline wboyd  United States
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I have also found that if the transformers are marked in some way, you can usually look them up on the internet. Many will have part/serial numbers printed on them.

I have several that I have salvaged from UPS units and older HiFi equipment.
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