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-   -   diyAB Amp The "Honey Badger" build thread (http://www.diyaudio.com/forums/solid-state/211905-diyab-amp-honey-badger-build-thread.html)

Variac 1st May 2012 06:04 PM

diyAB Amp The "Honey Badger" build thread
 
This thread is for people to discuss their builds, build issues, and parts for the diyAB "Honey Badger" power amp. the boards will be in the diyAudio store in a few days...

Main Thread:
http://www.diyaudio.com/forums/solid...ey-badger.html

Schematics, etc.:
http://www.diyaudio.com/forums/solid...ml#post2650279

To get boards go here to the diyAudio Store. There is also more info about the boards:
http://www.diyaudio.com/store/amplif...it-boards.html

danielwritesbac 5th May 2012 12:58 AM

1 Attachment(s)
Good job getting the boards in the store. :D
@Variac, feel free to edit, revise or recycle this post.

A version of the schematic with white background for easy printing:
http://www.diyaudio.com/forums/attac..._schematic.gif
A direct link to the original documents.
Parts list attached below:

danielwritesbac 5th May 2012 07:35 AM


Although the schematic is large, the board really helps to simplify building.
This might take an hour or so of soldering, but it should be easy.
(click on image for larger view)
http://www.diyaudio.com/forums/attac...oneybadger.jpg

P.S.
I don't have complete information on the post build checks and adjustment of the trimmers. Can someone please contribute that documentation?

haiduc32 15th May 2012 07:02 AM

a beginner question: how big of a transformer do I need for this amplifier, and can you recommend any?

niss_man 16th May 2012 10:25 AM

Quote:

Originally Posted by danielwritesbac (Post 3012399)
P.S.
I don't have complete information on the post build checks and adjustment of the trimmers. Can someone please contribute that documentation?

You have already provided a link to the adjustments and checks originally posted by ostripper. Click on 'direct link to original documents'. In that zip file there is a file called
'DIYA-AMP -construction-advanced-options.txt'. It has all the details used for constructing and testing the amplifier.

Regards

niss_man

niss_man 16th May 2012 10:35 AM

1 Attachment(s)
Quote:

Originally Posted by haiduc32 (Post 3023877)
a beginner question: how big of a transformer do I need for this amplifier, and can you recommend any?

I used a 600va 2x40v one for mine. The amp is capable of 180w into an 8 ohm load so there is some headroom. or you could use a couple of 300va ones. Oh yes and I also installed a soft start.

Regards

niss_man

ersa191 18th May 2012 03:47 PM

Can there be used Polystyrene Capacitors instead of mica

BP Crew 19th May 2012 09:20 PM

:)

ersa191 20th May 2012 05:30 AM

To be more precisely instead of C7/C8 witch are in BOM silver mica, can i replace them with polystyrene capacitors?

niss_man 22nd May 2012 04:13 AM

C7 can have up to 120v across it. As long as your caps are rated to maybe 200v you should be right. I am not sure why c8 should be silver mica may be someone else knows. It only shows a couple of volts at clipping under ltspice simulation. Another reason may be also that micas have a lower tolerance.

Regards

Simon


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