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Old 28th Jun 2015, 2:51 pm   #21
happytiger
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Join Date: Dec 2007
Location: Bristol, Avon, UK.
Posts: 184
Default Re: Grandma's DAC90A

Quote:
Originally Posted by emeritus View Post
I wondered if this capacitor was provided to deal with brush ripple that I understand could be present on some DC mains?
The capacitor is a buffer capacitor and is to suppress rf that is on the mains,you may have modulation hum without it fitted,and more noise which is often more apparent with AC/DC sets. Just make sure you fit a 1000v cap,or one specially designed for this application.
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