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Old 27th October 2012, 12:14 PM   #101
abetir is offline abetir  Philippines
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Hmm..
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Old 27th October 2012, 12:27 PM   #102
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Quote:
Originally Posted by abetir View Post
I'm using 2SC5200/A1943 for the output
With extraneously fast output devices, Click Here and install C11
I will edit post 1 and add this to the notes section. Thank you for the helpful questions that have been nice for improving the documentation.
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Originally Posted by abetir View Post
You have mentioned "thump stopper accesory", do you also mean at turn on & off?
It is not because of the power amp. It is to reduce turn on and off thump from single rail sources. A normal Circlophone doesn't power thump, but a normal computer does. My computer is set for standby power saver and the computer outputs big thumps when it wakes up.
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Originally Posted by abetir View Post
Can you please show it to me in the schematic..
Okay. Here is a piece of the proposed new input system. The added BAT86 are for reducing offset bounce (without needing the trimmer accessory). The added 3.3v zener and 39R are the thump stopper (for thumping sources). Zener are capacitive, about 0.8n when in series like that, and it also blocks RF as well as blocking HF noise from the source. The added parts are accessories that you may (or may not) like. The following attachment has experimental status.
Attached Images
File Type: gif Thumpstop2.gif (6.2 KB, 448 views)
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Last edited by danielwritesbac; 27th October 2012 at 12:29 PM.
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Old 28th November 2012, 10:35 AM   #103
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Here's Abetir's VAS heatsinks:
Click the image to open in full size.
Nicely done! Thanks for the photo!
These heatsinks can be made with copper pipe.
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Last edited by danielwritesbac; 28th November 2012 at 10:41 AM.
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Old 28th November 2012, 11:48 PM   #104
abetir is offline abetir  Philippines
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thanks!, they are actually heavy duty solder lugs with the flat top removed...
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Old 29th November 2012, 01:17 AM   #105
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I and several others need a briefing (directions) on how to make a PCB. Help?
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Old 4th December 2012, 01:13 PM   #106
ItaPapu is online now ItaPapu  United States
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Daniel, in your schematics Q5 and Q6 are reversed. It may not mean much, but it might create some confusion.
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Old 6th December 2012, 03:21 AM   #107
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I and several others need a briefing (directions) on how to make a PCB. Help?

You can find information on the subject on this site:

DIY Printed circuit board

There are many different ways of doing it, just chose your preferred one. Have fun.
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Old 7th December 2012, 10:25 PM   #108
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Quote:
Originally Posted by ItaPapu View Post
Daniel, in your schematics Q5 and Q6 are reversed. It may not mean much, but it might create some confusion.
My apologies. Could you double-check the replacements (attached)?
Attached Images
File Type: gif circlophone-original.gif (23.4 KB, 743 views)
File Type: gif circlophone-mouser.gif (22.5 KB, 461 views)
File Type: gif circlophone-standard.gif (33.8 KB, 2095 views)
File Type: gif circlophone-sections.gif (28.8 KB, 289 views)
File Type: gif circlophone-cfp.gif (35.4 KB, 244 views)
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Last edited by danielwritesbac; 7th December 2012 at 10:31 PM.
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Old 8th December 2012, 05:36 AM   #109
ItaPapu is online now ItaPapu  United States
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They are all good now. Thanks!
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Old 18th December 2012, 12:47 AM   #110
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Hello, I have 2 questions

Is the CFP version RF-immune?
Is it advisable to build on perfboard?
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