Whining is probably due to oscillation. Do you have an oscilloscope? Is this using one of PMI's PCBs? You could try using an output capacitor with lower ESR... or just keep C7.yes, i use several type pots. bourns, plain philips head one, they all make 'whine noise' (the pots) when cap remove.
I have boards of a version with 4 caps .Does anybody know whether any of these PCBs are still for sale?
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Dear meanman1964
Thanks again for your prompt reply, as I said in my last e mail I do not yet know how The system works. I would very much like to purchase the boards from you.I do have a PayPal
Account and you would have to have my home address.But I think that it would have to go through diyAudio please let me know
Best Regards rogersls4a
Thanks again for your prompt reply, as I said in my last e mail I do not yet know how The system works. I would very much like to purchase the boards from you.I do have a PayPal
Account and you would have to have my home address.But I think that it would have to go through diyAudio please let me know
Best Regards rogersls4a
Dear meanman1964
Thanks again for your prompt reply, as I said in my last e mail I do not yet know how The system works. I would very much like to purchase the boards from you.I do have a PayPal
Account and you would have to have my home address.But I think that it would have to go through diyAudio please let me know
Best Regards rogersls4a
Just send me a mail no need to use diyaudio to buy or sell
Dear sir
Is it possible to purchase 2off boards from yourself?I am in England I also have a PayPal
account.speek soon
Best regards Row.
Do you mean ready build boards?
Patrick
Capacitance multiplier power supply board-
Hi, still any spare boards, please spare me for 2 boards.
my email: odie1427@gmail.com
thanks,
odie
Hi, still any spare boards, please spare me for 2 boards.
my email: odie1427@gmail.com
thanks,
odie
Yes , I've spare boards .
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