Ugly prototype contest

[Bas Horneman]

MY VSPS

An externally hosted image should be here but it was not working when we last tested it.

 

[rabbitz]

Knew those driver plastic shipping thingies would come in handy one day 😀

 

[jam]

I think Mr.Nelson Pass has you all beat. Look at the A40 prototype here.

http://passdiy.com/pdf/a40.pdf

Jam 😀

 

[lineup]

...... daring me to show my work,
and it can mean only one thing:
ugly prototype contest!
----------------------------
My first entry dates from a few days ago,
during a discussion of the influence of an input tube's cathode source impedance on feedback ratios.
It's the Mullard input stage, executed as only a real artist like me can:

Ugly prototype ... hmmm
I might have a contribution. Or two.

Because, I seldom build more than a few exemplars of any amplifier.
So ... any next amplifier will be another prototype of a (slightly) different diy amplifier setup.

Wait some hours, please.
Now putting my digital camera litium batteries into my re-charger.

And I will turn up with some nice image(s) of some really ugly old prototype design of mine.

 

[Wavebourn]

High end pure class A room heater (see white fan near heatsink: without it output FETs unsoldered themselves)

 

[lineup]

Wavebourn. my friend
ooooohhhhh
you take the price 😀

 

[Wavebourn]

Wavebourn. my friend
ooooohhhhh
you take the price 😀

Thanks!

When may I expect that capacitors from your former avatar to be shipped?


😀

 

[lineup]

never, of course

but if you manage to get your hands on one
Mark Levinson 33
from some eBay auction, like I did for a few bucks,
you can rip apart the power supply
... why not, go ahead man 😀

see image

 

[lineup]

here is the ouput stage of
my Mark Levinson bargain

not bad .. at least a bit better than any Wavebourn prototype

 

[Wavebourn]

Nice looking, but horribly repairable. If it was designed by my student I would give 2 (American equivalent is F)

 

[lineup]

😀
hope Mark L. doesn't read
he would give up business out of his failure ....

 

[lineup]

Lineup prototype contribution #1

here is my first prototype

is one basic power supply prtotype, like i often do them
- hardwire, short wires between active components
- compact and logical
- no more junk than is needed for good electronics
- no case (only me here to get electrified & cooked)

Notice:
1. we have by law warning texts on cigarett packages in sweden
Rökning dödar = Smoking kills

2. input pins are labelled: N=neutral, L=live (hot)

3. output has got some handy screw onto cable connection
for V+ and V- ... the dual DC output voltage

4. why i have one different connection for 0 Volt output
heaven knows

5. the 4.5 VA transformer is originally for PCB
but I do rarely use any stinking plastic circuit boards
if I did,
how could i ever enter this great contest
for most ugly prototype made by DIY

Lineup 😎 audio regards
Lineup Audio forum - for some even uglier designs

 

[Wavebourn]

😀
hope Mark L. doesn't read
he would give up business out of his failure ....

Why?
He makes money.
I taught students when economics worked, so easy to repair gear was preferred. Today, when recyclonomics works instead, gear has to clean the market for new production dying peacefully. Do I like it or not, it is the reality of the modern life.