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jwilhelm
diyAudio Member

Join Date: Jun 2014
Location: New Hamburg, Ontario
Quote:
 Originally Posted by Jaack the calculation for power is as follows....p=(2x power xR)..square root the total...then divide the answer by the square root of 2(1.414)to get the ACv of the secondary.... so 2x200 x8=3200..sq root of 3200=56.5vdc then divide by 1.414=40v AC...
That's for a 100% efficiency output stage and perfect power supplies. Most amps will loose 10 - 15% and supplies will sag a couple volts. 45VAC will probably put out around 180W RMS at clipping.
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 Today, 05:52 PM #3642 osscar   diyAudio Member     Join Date: May 2009 Location: Riga, LV imho he will need more psu voltage ...one of my leach amps with 2x 45V ac - reaches max. approx. 135W @8R ... __________________ My DIY so far: two Leach amps,two Pass AB100, Pass F5, B1 buffer, Hiraga le monstre, two LM3875, LM1875, OPA549, 6C33C SE, GU32 PP, 6p3c-e PP, Marsh headphone amp.Phono - OBH-8se, Pacific RIAA, inDiscreet Phono, MF A1 Clone, Whammy headphone amp.
 Today, 06:03 PM #3643 bullittstang   diyAudio Member   Join Date: May 2013 Location: Detroit, MI I have a 2 pair mosfet amp running at 65vDC (at full load) and get right at 180w/8r and 300/4r. My 75vDC amp gets me 275/8r and 480/4r but has 6 pair of output BJTs. Agree with @osscar - you will need more than the 40vAC transformer to get 200w at 8r.
jwilhelm
diyAudio Member

Join Date: Jun 2014
Location: New Hamburg, Ontario
Quote:
 Originally Posted by osscar imho he will need more psu voltage ...one of my leach amps with 2x 45V ac - reaches max. approx. 135W @8R ...
That's either a really inefficient amp or very saggy supplies. I haven't built the Honeybadger but I did build it's big brother, the Slewmaster with Wolverine inputs. It's output was 180W with 45VAC secondaries which produced +/- 63VDC rails.
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 Today, 07:22 PM #3645 Vrystaat   diyAudio Member   Join Date: Jan 2012 Location: Bloemfontein Yip, I get 45Vrms( Avg) 220 W in a 9 ohm load, that is with 69 VDC rails on a 5 pair irfp output Slewmaster. __________________ Regards Jan Last edited by Vrystaat; Today at 07:25 PM.
neno70
diyAudio Member

Join Date: Jun 2016
5 channel ?

Quote:
 Originally Posted by AudioSan Just had to check the diodes. DC protection LED's comes on one at the time in i nice row from left to right.
hello, sorry, I didn't follow the forum lately, I saw well, did I build a 5 channel bad badger? sorry that used transformer? thanks

 Today, 10:16 PM #3647 sandrohv   diyAudio Member     Join Date: Oct 2011 Location: Boston, MA Hi all, I am new to this thread. Is there an LTSPICE schematic of the Honey Badger (and associated models)? I would like to give it a go in Simulation before building it. Also, I would like to use it as a base of experimentation to try some ideas. NOTE: I have also posted this question in the main Honey Badger thread. Thanks! - Sandro
AudioSan
diyAudio Member

Join Date: Feb 2009
Finnished the PSU tonight. But i had to change out the transformer. The first one had a lot of hum. But i had 2 of them. Now it's silent. PSU outputs +/-56.7Vdc with 224V mains.
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