Techtalk

Hi,
could look like this:




regards
Bernd

Looks good, but the Power Switch in the middle ???
and remember: to fit it in a 2U case, modifie the sockets of V104 / 204 (while you are there do V102 / 202 too).

I started to stuff the nice pcbs.

Can i use 1/4 Watt resistors or should they be 1/2Watt as written in the
drip manual

r229,r129 and r134, r234 are 3 watt as written in the parts list.

I used 1/4 Watt wtih no problems.
and I used 2W (with spacers) instead of 3W - they get a little hot, but it works.

[silent:arts] hat geschrieben: to fit it in a 2U case, modifie the sockets of V104 / 204 (while you are there do V102 / 202 too).

Hi Volker,
for the tube sockets, what exactly do I have to do with them? Removing upper or lower part to reduce their height?
I've got these sockets:


regards
Bernd

just remove the upper part (dremel works well):

Ah, I see, I thought I had to remove the upper part of the ceramic socket, so the upper parts of the pins have to be removed. Thx Volker.
regards
Bernd

yes, only the upper part parts of the pins
gave me the 3 mm I needed (when using 5mm spacers - and is case dependent)

Why did you go with the Solen 10uF caps instead of the TC72 Mallory?
Did you get a chance to compare the two?

Starting my BOM. HEy if anyone is interested I have finished sourcing the parts# for the Caps in North America. (Mouser and PartsConnexion)

Still can't believe we can get by with 1/4W resistors!


I'll post it up if there are any Folks beside me building one over here.

-ChuckD

ChuckD hat geschrieben:Why did you go with the Solen 10uF caps instead of the TC72 Mallory?
Did you get a chance to compare the two?

no, haven't compared them. the easy answer is: I just used components I had arround, or where I knew I can buy them
I have no idea if there is any source for the Mallory in europe.

oh, and the 1/4W resistors work fine in my unit
(but remember the four 2W resistors)

Volker,

I have 4 older Mallory Caps (silver cans) that someone gave to me for free. Send me you address and I will mail you 2 of them! I will use the other two on mine. I measured them with my Fluke MM and 2 came out as ~13uF and the other 2 came out as ~12uF so I will pair them up that way.

Not sure if they are good. They are new old stock but they were free ... so.

I will throw them in the post for you.

-ChuckD

hey Chuck,

if you don't need them - many thanks

Volker,
there are two resistors (R125,225) to be determined. They seem to be related to the GR meter. Assuming, I´ll take a Sifam VU, what are there values? What did you take there? Thx a lot.
Cheers
Bernd

Bernd,
this is the resistor Urei provided with each T4b.
rumors are they are always 33K (mine were both 33k).

I was about to ask the same question!

I'll go with 33K I guess.

-Chuck