TIP50 + LM317 High Voltage Regulator - diyAudio
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Old 2nd August 2005, 08:53 AM   #1
bee696 is offline bee696  Thailand
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Default TIP50 + LM317 High Voltage Regulator

Dear all,

I'm looking for the the captioned schematic. Actually, I stored in my PC but I can't find it

Pls help.
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Old 2nd August 2005, 09:26 AM   #2
AJT is offline AJT  Philippines
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hi,

if you know what format it is, example, .jpg. then you can use the "search" function in your pc. if its there you will find it.
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Old 2nd August 2005, 10:51 AM   #3
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No TIP30, but is this along the lines of what you're looking for?
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Old 2nd August 2005, 11:16 AM   #4
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Old 2nd August 2005, 11:19 AM   #5
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Old 2nd August 2005, 12:31 PM   #6
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Default Try a MOSFET instead of a TIP50

These are variations on the tried-and-true Maida design, which I've used successfully many times in the past - all the way up to 1000V! The problem has always been that high-voltage bipolar transistors have low current gain, so you are forced in many cases to use a Darlington configuration. A buddy of mine just built a Maida variation using a 1000V MOSFET (in a TO-220 package) to stretch the voltage, instead of a Darlington pair. Works great he says. I don't have the part number but I can ask if anyone wants to know. There are surely a large number of high voltage MOSFET types available.
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Old 2nd August 2005, 10:21 PM   #7
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Hello. For a MOS-FET version, check the following site of my friend.
http://www.geocities.jp/shoranosekai...irozu2of2.html

The original design was introduced by Mr. Kato (JA9TTT). His site no more carries the drawings. I have followed his design and enjoy verious kinds of high voltage power supplies for my tube amplifiers.
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Old 3rd August 2005, 05:57 AM   #8
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Default Example

Check out the captioned SFM80 Schematic here:
http://www.diyparadiso.com/proj/sfm75.htm
Don't worry about his SRPP comment at the top of the schematic, not a SRPP in sight.
The whole front end circuit is available as a kit or PCB only from Curcio Audio Engineering (CAE). IIRC the PCB-1A. Of course, no circuit value on the schematic at CAEs website.
I've built a few of these - works well.
Cheers,
Ian
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Old 3rd August 2005, 09:11 AM   #9
bee696 is offline bee696  Thailand
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Dear all, Thanks so much for your helps!
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Old 4th August 2005, 03:47 AM   #10
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Dear all,

Actually, I stored in my home 3 boards for sale.
If somebody need a board i can sale them.
my mail walter_burkhardt@web.de
regards walter
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