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#1
31st March 2006, 08:45 PM
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Low noise HT - non BG!
In response to comments for a non BG version of the low noise psu I knocked this version up. Changes are to replace the RC stage with an LC stage since standard caps in the PSU are noisier than chokes and so hide its self noise. The choke is snubbed by two 100nF caps connected to ground from each end of the choke. The big electrolytic is bypassed with a nice PP cap and the output cap is a nice PP of about 10uF. This a nice quiet supply and is the one I use in guitar amps. Again note the balanced power connection on the mains side - it really does make a difference as long as the earth is clean.
ciao James 
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