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Old 14th December 2012, 02:00 PM   #3581
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Attached pic 6V6, it's OK?
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Old 14th December 2012, 02:57 PM   #3582
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Have anyone tried 6V6 preamp with transformer output?
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Old 14th December 2012, 03:08 PM   #3583
Salas is offline Salas  Greece
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@merlin
Schema 6v6 ok.
Try no gnd, full gnd, to see. Use fuse, even glass one for now.
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Old 14th December 2012, 03:09 PM   #3584
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Quote:
Originally Posted by Joshua_G View Post
Have anyone tried 6V6 preamp with transformer output?
Not yet as far as I remember.
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Old 14th December 2012, 03:19 PM   #3585
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Quote:
Originally Posted by Salas View Post
@merlin
Schema 6v6 ok.
Try no gnd, full gnd, to see. Use fuse, even glass one for now.
I will use two diodes in series for voltage doubler, I changed all CCS area: resistors & both DN2540, also I will included all zeners 12V 05.5W that I didn't installed, local shop don't have 500V: could I use two fuses in series 100mA 250V or in parallel?
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Old 14th December 2012, 03:20 PM   #3586
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Use two fuses 100mA in series with 2 cm distance between their holders. So they can interrupt without arc.
http://www.youtube.com/watch?v=MAlyEMQxTN0
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Old 14th December 2012, 04:14 PM   #3587
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Can I use zeners 12V 1W to replace 0.5W?
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Old 14th December 2012, 05:16 PM   #3588
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Yes
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Old 14th December 2012, 06:47 PM   #3589
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Salas see attached pics, If I don't see I don't believe: 300 ohms PSU Caddock MP820 with big heatsink.
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File Type: jpg DSC00077.jpg (328.0 KB, 109 views)
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Old 14th December 2012, 07:32 PM   #3590
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I have connected the regulator but the red LED has not lit and neither I have voltage at the output

First I will change Q6 2SK117GR to see if LED lits.
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