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50w Single-Ended BAF2015 Schade Enabled
50w Single-Ended BAF2015 Schade Enabled
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Old 16th March 2018, 02:48 PM   #501
Michael Rothacher is offline Michael Rothacher  United States
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50w Single-Ended BAF2015 Schade Enabled
It may take a little more than 4V7, so leave yourself some upward adjustment room.

Looking good.
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Old 16th March 2018, 02:53 PM   #502
Dennis Hui is online now Dennis Hui  Canada
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50w Single-Ended BAF2015 Schade Enabled
I don't know how nominal the 4.7V figure is, so I would do as Uncle Mike suggested.
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Old 17th March 2018, 06:55 PM   #503
Soundhappy is offline Soundhappy  France
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Quote:
Originally Posted by Dennis Hui View Post
I don't know how nominal the 4.7V figure is, so I would do as Uncle Mike suggested.
Quote:
Originally Posted by Zen Mod View Post
small CCS plus 4 Green LEDs in series , then trimpot across them ?
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Originally Posted by Michael Rothacher View Post
It may take a little more than 4V7, so leave yourself some upward adjustment room.

Looking good.
Thanks Gentleman's for Yours councils.
Build autonomus bias psu with his own tramsformer is my choice.
I got LM317 who can work up to 1.5 A it's ok or need add current boost transistor for IXYS bias psu ?
Greetings
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Old 17th March 2018, 07:00 PM   #504
Zen Mod is offline Zen Mod  Serbia
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50w Single-Ended BAF2015 Schade Enabled
no need

for bias circ 10mA is overkill

lm317 is too crude

use TL431 or something .......... better than 317
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Old 17th March 2018, 08:07 PM   #505
Soundhappy is offline Soundhappy  France
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Yes for TL431 solution
Get small xformer on hand with two 12 V secondaires.
Are this circuit from CSX1 all i need ?
Schematic courtesy of Papa FW Diy thanks.
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Old 17th March 2018, 08:28 PM   #506
Zen Mod is offline Zen Mod  Serbia
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50w Single-Ended BAF2015 Schade Enabled
what voltage you need ?
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Old 17th March 2018, 08:30 PM   #507
Soundhappy is offline Soundhappy  France
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what voltage you need ?
From 4V7 to ~ 8V
Thanks Mighty
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Old 17th March 2018, 09:25 PM   #508
Zen Mod is offline Zen Mod  Serbia
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From 4V7 to ~ 8V
Thanks Mighty
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Old 17th March 2018, 09:40 PM   #509
Soundhappy is offline Soundhappy  France
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Thanks ZM for the schematic
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Old 18th March 2018, 10:21 PM   #510
Soundhappy is offline Soundhappy  France
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Bias TL431 psu work fine
Time for signal path input transformer wiring
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