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Croft Series 4 PL519 regulator
Croft Series 4 PL519 regulator
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Old 29th March 2013, 12:24 PM   #1
peterfarrow is offline peterfarrow  United Kingdom
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Join Date: Nov 2011
Location: Chippenham
Croft Series 4 PL519 regulator
Default Croft Series 4 PL519 regulator

Does anyone have the Schematic/circuit diagram for the B+ regulators in a Croft series four, they use a PL519 ECC83 and an 85A2....

I have a ton of PL519 tubes and want to make a regulator to drive KT66 power amp output stage...

thanks..
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Old 29th March 2013, 02:21 PM   #2
v4lve lover is online now v4lve lover  Netherlands
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Croft Series 4 PL519 regulator
I don't have the schematic. But i do suggest you take a look at this. Tube Based Voltage Regulators - Part 3

Beware that if you decide to built one of the said regulators, you must use insulated windings for the heater of the PL519.

kind regards
V4lve
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Old 29th March 2013, 02:23 PM   #3
peterfarrow is offline peterfarrow  United Kingdom
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Croft Series 4 PL519 regulator
Yes I have been looking at that too, thanks
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Old 29th March 2013, 02:34 PM   #4
CarlyBoy is offline CarlyBoy  Canada
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Quote:
Originally Posted by v4lve lover View Post
Beware that if you decide to built one of the said regulators, you must use insulated windings for the heater of the PL519.
Can you not just give it it's own (dedicated, floating) heater supply?
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Old 29th March 2013, 03:08 PM   #5
peterfarrow is offline peterfarrow  United Kingdom
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Croft Series 4 PL519 regulator
Quote:
Originally Posted by CarlyBoy View Post
Can you not just give it it's own (dedicated, floating) heater supply?
yes.
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Old 29th December 2015, 08:49 PM   #6
fpaoletti is offline fpaoletti  Italy
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http://www.pi.infn.it/~federico/Immagini/CROFT4.PS

It's a Poscritp diagram. Hope this help
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