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Hoffman Amps Forum image Author Topic: Looking for Regulated Power Supply  (Read 4572 times)

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Offline ululufut

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Looking for Regulated Power Supply
« on: July 11, 2019, 05:21:30 pm »
I'm looking for recommendations for a reliable high voltage regulated power supply that also has a 5V and 6.3V output. Better yet, if someone has one for sale, I am interested.

Offline jjasilli

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Re: Looking for Regulated Power Supply
« Reply #1 on: July 11, 2019, 08:21:12 pm »
You need to state Voltage & Current requirements.  Many supplies top out @ 400 VDC  & 150 mA.  Not enough for bigger power tubes.  The old Fluke 410D (I think) hits 600VDC @ high current. 


You'll want a "C-Output", typically 0 to 100 -VDC @ 1mA.  This is a fixed bias voltage supply.


6.3 VAC @ 4A is pretty standard for filament voltage.


I'm not aware of 5V output.  This is for a rectifier tube which is unnecessary.  You'r already getting rectified HT DC from the power supply.

Offline DummyLoad

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Re: Looking for Regulated Power Supply
« Reply #2 on: July 12, 2019, 09:05:11 am »
Image result for heathkit ip17

Offline sluckey

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Re: Looking for Regulated Power Supply
« Reply #3 on: July 12, 2019, 09:47:48 am »
Why regulated? How many tube guitar amps have you seen that had a regulated supply? An adjustable B+ would be much more useful. That's just a PT and small variac. Use a separate filament transformer.
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline ululufut

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Re: Looking for Regulated Power Supply
« Reply #4 on: July 14, 2019, 01:34:13 pm »
Thanks for the replies -

jjasilli - yes, you're right re: 5V output. I did notice that most of the used power supplies I found on Ebay didn't exceed the specs you mentioned.


sluckey - yeah, I guess you're right.

Offline 2deaf

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Re: Looking for Regulated Power Supply
« Reply #5 on: July 15, 2019, 06:16:28 pm »
This is a simple bench supply that I use frequently.  It also has a built-in octal socket wired for power tubes so that I can test their static characteristics.  I also have an unpowered satellite box that I use with the bench supply to test small tubes.   

Offline ululufut

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Re: Looking for Regulated Power Supply
« Reply #6 on: July 15, 2019, 07:03:13 pm »
This is a simple bench supply that I use frequently.  It also has a built-in octal socket wired for power tubes so that I can test their static characteristics.  I also have an unpowered satellite box that I use with the bench supply to test small tubes.   

That's terrific - thanks!

 


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