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On A Hippie Trail, Head Full Of Zombie
On A Hippie Trail, Head Full Of Zombie
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Old 7th January 2020, 08:06 PM   #1
2 picoDumbs is offline 2 picoDumbs  Australia
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On A Hippie Trail, Head Full Of Zombie
Default On A Hippie Trail, Head Full Of Zombie

Back down under after a long holiday.

It's time to do something.
The plan is to do a little bit each day and report here with my progress.

It's your job to kick my butt if I get lazy with this.

Day 1
Fresh pcbs made up.

By end of today, the plan is to have at least one psu board stuffed and soldered up.

If I have more time after that I will start some measurements on new devices I have purchased.

TO DO LIST
Wiring Looms
Install tube inserts
Test Powersupply
Populate pcb
Test amp


Edit: Transformer Specs Added
Pri A: 0—120v (BLUE—GREY) 50/60Hz
Pri B: 0—120v (VIOLET-BROWN) 50/60Hz
----------- SCREEN ------- (GRN/YEL) -----------
Sec 1: 0—19v—25v (BLACK-WHITE-RED) rated at 10.0A rms.
Sec 2: 0—19v—25v (ORANGE-GREEN-YELLOW) rated at 10.0A rms.
---------- MUMETAL BAND ------------------------
Resin Filled Centre = M8 Hole / M8 x 130mm Bolt Supplied.
Total Rating: 500VA.

Here are the pcbs
Attached Images
File Type: jpg 15784274447646072501565593107438.jpg (414.7 KB, 1029 views)
File Type: jpg 15784275336222940717961084785721.jpg (361.2 KB, 1034 views)
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"If you leave this point unattached to some circuitry, an ideal constant current source will emit a small lightning bolt which will travel until it connects to something." Nelson Pass

Last edited by 2 picoDumbs; 6th February 2020 at 08:33 PM.
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Old 7th January 2020, 08:12 PM   #2
TungstenAudio is offline TungstenAudio  United States
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Did you meet a strange lady?
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Old 7th January 2020, 08:14 PM   #3
Zen Mod is offline Zen Mod  Serbia
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On A Hippie Trail, Head Full Of Zombie
oh no , not another one ........

make it different, then go public
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Old 7th January 2020, 08:16 PM   #4
2 picoDumbs is offline 2 picoDumbs  Australia
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On A Hippie Trail, Head Full Of Zombie
Quote:
Originally Posted by TungstenAudio View Post
Did you meet a strange lady?
Yeah
She made me nervous, but eventually I got a bloody vegemite sandwich, and it was all good after that.
Hahahaha
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Old 7th January 2020, 08:18 PM   #5
2 picoDumbs is offline 2 picoDumbs  Australia
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On A Hippie Trail, Head Full Of Zombie
Quote:
Originally Posted by Zen Mod View Post
oh no , not another one ........

make it different, then go public

I like torturing people.
Hahahaha
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Old 7th January 2020, 08:24 PM   #6
fabrice63 is offline fabrice63  France
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Gonna stick around here for a while

.
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Old 7th January 2020, 08:25 PM   #7
Zen Mod is offline Zen Mod  Serbia
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On A Hippie Trail, Head Full Of Zombie
Quote:
Originally Posted by 2 picoDumbs View Post
I like torturing people.
Hahahaha
I know

and I like to keep secret schmtcs still secret

ruin original one , then go public
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Old 7th January 2020, 08:35 PM   #8
2 picoDumbs is offline 2 picoDumbs  Australia
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On A Hippie Trail, Head Full Of Zombie
Quote:
Originally Posted by Zen Mod View Post
I know

and I like to keep secret schmtcs still secret

Yeah me too. I certainly won't be publishing anything that is meant to be secret.
In fact I don't know what the original schematics are in most cases, I don't like copying verbatim, I prefer doing my own thing based on a general design idea (Thanks to Papa for the endless ideas).

Where you may see clone, is really not an accurate description.
On this circuit there almost is no such thing since the circuit values will be highly dependent on Vgs threshold and transconductance values of the mosfets, Idss values of jfets, etc etc.
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"If you leave this point unattached to some circuitry, an ideal constant current source will emit a small lightning bolt which will travel until it connects to something." Nelson Pass

Last edited by 2 picoDumbs; 7th January 2020 at 08:47 PM.
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Old 7th January 2020, 08:42 PM   #9
fabrice63 is offline fabrice63  France
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Quote:
Originally Posted by 2 picoDumbs View Post
Yeah me too.
In fact I don't know what the original schematics are in most cases, I don't like copying verbatim, I prefer doing my own thing based on a general design idea (Thanks to Papa for the endless ideas).
keep on man , keep on

.
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Old 7th January 2020, 09:20 PM   #10
2 picoDumbs is offline 2 picoDumbs  Australia
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On A Hippie Trail, Head Full Of Zombie
Quote:
Originally Posted by fabrice63 View Post
keep on man , keep on

.

Nice to have some encouragement.
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