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28th January 2005, 04:55 AM
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#1 |
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diyAudio Member
Join Date: Mar 2003
Location: BEIJING
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peranders industry gainclone assembly progress
This thread is a assembly discussing of industry gainclone.hope it is helpful to everyone.
The project describing: http://home.swipnet.se/~w-50719/hifi/qrp02/index.html Industrial SMD Gainclone - group buy No doubt,the design of P-A is AMAZING! ZANG |
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28th January 2005, 05:08 AM
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#2 |
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diyAudio Member
Join Date: Mar 2003
Location: BEIJING
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What I made is an integrated amp.I use one 240VA 2 X 22VAC toriod, for power supply.
the attached drawing show the psu connections. P.S. I have collected almost all parts.but the sop-4 3-t packaged lm317/337 can not be find at my home town.who knows where to buy these two components? |
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28th January 2005, 07:13 AM
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#3 |
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Electrons are yellow and more is better!
diyAudio Member
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I wish you good luck with the grounding becasue the pcb is made for one transformer per pcb. If you succeed to make a silent and humfree amp you have succeeded.
__________________
/Per-Anders (my first name) or P-A as my friends call me |
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28th January 2005, 11:11 AM
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#4 | |
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diyAudio Member
Join Date: Apr 2004
Location: Lousy Anna
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Quote:
Just like designing an amplifier, grounding is also an art form. Some people fight with it forever, some get it with minimal fuss. 
__________________
Troy Thinking positive doesn't make things better, it makes you a better person. |
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28th January 2005, 11:35 AM
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#5 |
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Electrons are yellow and more is better!
diyAudio Member
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The thing was that I designed this board for one transformer each just because of the grounding problems people have with other designs.
If you only connect one transformer per pcb you will get a hum/thump/click free amp! The grounding is ready and you don't have to think about this.
__________________
/Per-Anders (my first name) or P-A as my friends call me |
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but,smd packaged lm317/337 still cannot find
