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Old 14th October 2012, 01:12 PM   #3291
Salas is online now Salas  Greece
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You gave two rectified voltages for two Ohmic loads. Those give two points of current also.
So there shows a poor for data pattern of drop that you can roughly extrapolate some expectation for another lighter load demand.
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Old 14th October 2012, 01:17 PM   #3292
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but you got it down so nice and exact......

And in the future if I like to try to set the CCS to load the tube at say 15mA each.....do I need to modify the PSU??
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Old 14th October 2012, 01:23 PM   #3293
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If it will stay then at least +10V than output for 50mA CCS at your lowest mains expected, don't modify it.
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Old 17th October 2012, 01:58 PM   #3294
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Salas, ECC81 mu-follower with AZ1 + SSHV2 sounds superb, extraordinary voices with very good bass. With SS rectifiers loss all the magic.
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Old 17th October 2012, 03:27 PM   #3295
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Quote:
Originally Posted by Salas View Post
If it will stay then at least +10V than output for 50mA CCS at your lowest mains expected, don't modify it.
Final testing of new PSU with 150K bleeder only. V out = 377V
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Old 17th October 2012, 03:29 PM   #3296
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PSU with SSHV2 installed awaiting testing.

Dummy load = 10K/50W.
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Old 17th October 2012, 03:35 PM   #3297
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SSHV2 testing perfect....all behaves according to Ohm's law + Salas' law

SSHV2 output set at 269V and input = 280V.....T.P. set at 50mA....

I now thinking of loading the VT=25A with 15mA each....with B+ at 267-270V....
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Old 17th October 2012, 03:40 PM   #3298
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Any experience with sweet spot of VT-25A most appreciated......
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Old 17th October 2012, 05:08 PM   #3299
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Quote:
Originally Posted by merlin el mago View Post
Salas, ECC81 mu-follower with AZ1 + SSHV2 sounds superb, extraordinary voices with very good bass. With SS rectifiers loss all the magic.
OK, keep it with AZ1 as set.
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Old 17th October 2012, 05:09 PM   #3300
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I didn't expected such difference.
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