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-   -   Would I know if my caps are not connected? (http://www.diyaudio.com/forums/chip-amps/20649-would-i-know-if-my-caps-not-connected.html)

sounder 23rd September 2003 12:45 PM

Would I know if my caps are not connected?
 
My second GC is running well and sounding better BUT I just checked the Nippon Chem-con pinout for 3 pin electrolytics even though I checked the caps with a meter, their pinout says I mounted the blank pin!! Would the GC sound as good as it does with the main caps disconnected and how can I test!

Not a big deal if it is so, I'd have to buy more but I was touting the improved sound with these caps

:scratch: :bigeyes:

JOE DIRT® 23rd September 2003 01:39 PM

mounted to what>???....the Board??...or do you mean you connected the N/C pin??? in the circuit

sounder 23rd September 2003 02:05 PM

Quote:

Originally posted by JOE DIRT®
mounted to what>???....the Board??...or do you mean you connected the N/C pin??? in the circuit

Yes, connected the N/C pin odf the cap into the circuit although, I just checked continuity w/ the power supply disconnected (open circuit I believe), the caps has continuity in one direction and sound is awesome so I do believe they're connected.

quekky 24th September 2003 07:32 PM

i've built tda7294 more or less according to the datasheet, using 220uF on each rail near the IC. and during the 1st time i tested it, i forgotton to add extra caps, and the music is shuttling. only when i add another 1000uF to each rail did the music sounds normal

millwood 24th September 2003 08:29 PM

I have built a minimalist lm3875 with just two resistors (my PS does have 3300uf filter caps on each rail). It worked well and adding additional filtering cap on the chip doesn't produce audible improvement. the chip has pretty good PSRR, I guess.

For stability reasons, I do use two by-passing caps.


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