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diyAB Amp  The "Honey Badger" build thread
diyAB Amp  The "Honey Badger" build thread
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Old Today, 05:39 PM   #3641
jwilhelm is offline jwilhelm  Canada
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Quote:
Originally Posted by Jaack View Post
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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Old Today, 05:52 PM   #3642
osscar is offline osscar  Latvia
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imho he will need more psu voltage ...one of my leach amps with 2x 45V ac - reaches max. approx. 135W @8R ...
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Old Today, 06:03 PM   #3643
bullittstang is offline bullittstang  United States
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diyAB Amp  The "Honey Badger" build thread
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.
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Old Today, 06:04 PM   #3644
jwilhelm is offline jwilhelm  Canada
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Quote:
Originally Posted by osscar View Post
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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Old Today, 07:22 PM   #3645
Vrystaat is offline Vrystaat  South Africa
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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.
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Last edited by Vrystaat; Today at 07:25 PM.
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Old Today, 07:43 PM   #3646
neno70 is offline neno70
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Default 5 channel ?

Quote:
Originally Posted by AudioSan View Post
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
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Old Today, 10:16 PM   #3647
sandrohv is offline sandrohv  United States
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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
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Old Today, 11:06 PM   #3648
AudioSan is offline AudioSan  Norway
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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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