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Old 9th May 2013, 08:11 AM   #91
tinitus is offline tinitus  Europe
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maybe I could try it, starting out small
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Old 9th May 2013, 01:11 PM   #92
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Quote:
Originally Posted by Nelson Pass View Post
I should think they would do the job, and fewer of them.. Of course you
don't at all have to use darlingtons. It's trivial to put together a driver stage.

Mr. Pass. Will you allow me as the starter of this thread [and the other contributors] to propose a balanced design for it in future posts?
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Old 9th May 2013, 02:59 PM   #93
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I am not the boss, you may propose anything you like.

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Old 9th May 2013, 03:39 PM   #94
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I am not the boss, you may propose anything you like.

Thanks Mr. Pass. The Interest by DIYers in AB100 is growing. My contribution will be positive.
Best regards
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Old 9th May 2013, 05:25 PM   #95
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Originally Posted by Antoinel View Post
Thanks Mr. Pass. The Interest by DIYers in AB100 is growing. My contribution will be positive.
Best regards
Any objections by DIYers if I showed a proposed balanced design for AB100. I can start a fresh thread!
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Old 9th May 2013, 05:56 PM   #96
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by Antoinel View Post
Any objections by DIYers if I showed a proposed balanced design for AB100.
noone else are posting anything right now, so ....

Quote:
Originally Posted by Antoinel View Post
I can start a fresh thread!
plenty of time for that later, if needed


hey, btw, your suggestion, it wouldn't happen to use MJL21193/94 ....
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Old 9th May 2013, 06:06 PM   #97
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Originally Posted by tinitus View Post
noone else are posting anything right now, so ....



plenty of time for that later, if needed


hey, btw, your suggestion, it wouldn't happen to use MJL21193/94 ....
Thanks tinitus. The proposed schematic of a balanced diyAB100 does not include any specific recommendation for devices.
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Old 9th May 2013, 07:07 PM   #98
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Default Conjoined Twin diyAB100s

The attached image [SimpleAB100.jpg] shows two simplified schematics of diyAB100. The schematic at the bottom of the view is a further simplification of the top one. I am able to carry on the conversation without showing the output stage to enhance clarity; because the phase of the half shaded sine wave signals is identical in both schematics.

The second attachment "ConjoineddiyAB100s.jpg" is a proposed schematic for the balanced amp. The Right and Left channels are the highly simplified bottom schematics in the previous image. The general benefits of balanced designs are well known. My primary focus is to show the additional performance benefit from "conjoining" the two amps beyond the established ones of balancing. The operation of this balanced amp is very much similar in concept and application to that described in the patent US 5,376,899; inventor Nelson S. Pass.

The Left and Right amps are joined at the emitter ports of Q6 and Q6'. Jumper J can be a wire, a high quality coupling capacitor or a resistor.

The post to follow will explain the operation of the balanced amp in more detail.

Best regards.
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File Type: jpg ConjoineddiyAB100s.jpg (279.1 KB, 250 views)
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Old 9th May 2013, 07:37 PM   #99
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balanced BA-3 ?
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Old 9th May 2013, 07:46 PM   #100
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Quote:
Originally Posted by tinitus View Post
balanced BA-3 ?
The schematic of conjoined twin diy AB100 above is different from that of balanced BA3. Please see the thread "Bridge a pair F5s" for more detail. I 'll use BBA3 FE as a working example.

Last edited by Antoinel; 9th May 2013 at 07:50 PM. Reason: tweak
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