power supply for hiraga 20 W class a amp

earless · 2nd February 2011, 07:57 PM

i'm having trouble with the values for the diode bridge in the psu that hiraga suggests for his 20 w class a amp. can anyone clear them up for me?

nigelwright7557 · 4th February 2011, 01:02 AM

I would use a bridge rectifier 200volt and 35 amps, about £3.
Try RS, Farnell or Maplin.

earless · 4th February 2011, 01:11 AM

many thanks nigel. i'll let you know how it turns out.

earless · 13th February 2011, 03:15 PM

one more question nigel: with all the capacitance in this power supply, wouldn't a soft start a soft start circuit impose itself?

4th February 2011, 01:02 AM	#2
nigelwright7557 diyAudio Member Join Date: Apr 2008 Location: Carlisle, England	I would use a bridge rectifier 200volt and 35 amps, about £3. Try RS, Farnell or Maplin. __________________ http://www.murtonpikesystems.co.uk PCBCAD40 pcb design software.

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4th February 2011, 01:11 AM	#3
earless diyAudio Member Join Date: Feb 2010 Location: Guilford, CT	many thanks nigel. i'll let you know how it turns out.

13th February 2011, 03:15 PM	#4
earless diyAudio Member Join Date: Feb 2010 Location: Guilford, CT	one more question nigel: with all the capacitance in this power supply, wouldn't a soft start a soft start circuit impose itself?

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