the Poor Man 660 support thread

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looking nice :thumb:
keep the photos coming :grin:

what we can see here: other tube sockets can be modified to fit ?
what WIMAs did you use for the 10µF ?
they are physically smaller then the suggested ones :?
(good we included those different footprints)

for sure this will be a beauty once fitted with suitable knobs :thumb: :thumb: :thumb:
 
The sockets - they were an ordering mistake from tubesandmore...but they are ceramic, and were very cheap (90 cent each?) and after some pin cuting they went into the pcb.. thats why i wanted to label this VPM670 - you can guess why... :wink:

The caps are Wima MKS4 10uF/100V - sorry,no part # - i bought them localy.

for sure this will be a beauty once fitted with suitable knobs
Click to expand...

- any suplier for these?..
 
[quote author="Moby"]I'm pretty sure that MKS4 will do the job ;-)[/quote]
me too

[quote author="nielsk"]Still no consensus on rotary switch tapers?[/quote]
will always stay a matter of taste
 
found a uk alternate for the heatsinks.

Rapid
36-0190 and
36-0316

http://www.rapidonline.com/Electronic-Components/Semiconductor-Hardware/Heatsink/Vertical-mount-TO220-heatsinks/60159

http://www.rapidonline.com/Electronic-Components/Semiconductor-Hardware/Heatsink/Compact-vertical-TO220-TO218-TO247-heatsink/60146
 
I was wondering about one thing before i stuff the pcbs. I havent really built any tube stuff before, and was wondering since i saw in drip electronics LA2A build manual that he had elevated the resistors crossing the heater tracks on pcb a few millimeters so that they werent flush against the board.

Is this something i should to for the poor man? On all resistors, or just some of them? Any other components that i should do this with in case it needs to be done?

Or can just stuff the pcb like i normally would?
(I already stuffed the D-AOC pcbs the normal way, and now im worried i did something wrong).

Please advice!
/Jonas
 
Hi bernbrue

What value of heater resistor did you use?
I have used 1R 50 W and I'm having 4.3V instead of 6,3 and the resistor is heating a lot.there are no shorts.
Should i use that white matter i used for heat sink and regulator?
Should i raise or down the resistor value?


Thanks
 
let it heat up a while for measuring.
if you still have 4,3V try the a lower value of the resistor.
and yes, the resistor is getting hot. mount it to the chassis.

which PSU transformer do you use ?
 
Hi,

It is already mount on the chassis.And I was wondering if I should use the white paste to conduct more heat to the chassis.

I tried both transformers edcor and bernbrue's.The torroidal is slightly higher but it still a lot under 6.3V.I think I should be happy with something between 5.8V and 6.8V.

:?:
 
IMG_1325.jpg


Here is what i got with the Edcor power, an 0.33R 50W resistor and after conecting the pilot lamp.....
also, if you try different resistors with crocodile leads,take into acount the wire legnth... :wink:
 
nice one !

about the case: Bernd uses this one
http://www.modushop.biz/ecommerce/cat069_l2.php?n=1

but would that ensure enough cooling ? there is also this one with more cooling holes and heatsinks at the sides
http://www.modushop.biz/ecommerce/cat078_l2.php?n=1

it is a pity that you can buy from them only as a company. or can everyone buy easily from them ?
 
Hi,
you´re right with these cases. I had no problem buying items as private person. The cases are of great quality. Vented covers might be a good idea.

http://www.modushop.biz/ecommerce/cat098_l2.php?n=1

regards
Bernd
 

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