What do you guys make of this?

[MikoKensington]

This arrived.

http://img.photobucket.com/albums/v473/MikoKensington/GEuniSchem.jpg

 

[squib]

what arrived? just the schematic or the unit as well?
This is very similar to the Altec 436 Limiter, which i reckon is a nice unit. As far as vari-mu limiters go in is simple and clean, which fits my "less is more" policy.

 

[Steffen]

looks exactly like the COLLINS 356 limiter...

 

[MikoKensington]

Both arrived. I just got the schem today. I don't know much about them. I'm trying to figure out if they're worth keeping. I put them in the Black Market to see if any nice trades came up. I have a lot to contend with on my bench. None is tube. I'm not sure what to do for a power supply. I don't trust myself to work with 300VDC!

Anybody have any ideas for a PS?

 

[b3groover]

Miko, I'm dealing with the same problem... how to make a 300vdc power supply. Here's a thread I started on the subject awhile ago.

http://www.groupdiy.com/index.php?topic=1106&start=0

 

[MikoKensington]

Here is my solution.

www.kitsparts.com

Go to high end audio.
Then to preamplifiers.
Towards the bottom you'll find a preassembled solution for $70 shipped.

 

[toby]

[quote author="MikoKensington"] I don't trust myself to work with 300VDC!

[/quote]


stops hurting after a while!!! build a 150v psu first.

for $70 that supply looks does look pretty good though.

 

[alk509]

Is there any real advantage to a tube rectifier PSU? There is a high voltage SS regulator out there... Let me check my parts box, I'll be right back...

Al.

 

[toby]

i think the only real advantage is that it will create a kind of 'soft start' ie it will not start putting out voltage till the heater has warmed up, and the voltage has normally sorted itelf out by then.

guitar amp people go on about compression when the rectifier is pushed abit too far as well, but this probally isnt a consideration for powering the compressor circuit!

 

[alk509]

OK, TL783C made by TI. It says it only goes up to 125V, but I'm sure you can float it and get whatever you want. Here's a link to it:

http://focus.ti.com/docs/prod/folders/print/tl783.html

Peace,
Al.

 

[gyraf]

See e.g. the G9 supply for a +245V HT supply using TL783..

Jakob E.

 

[alk509]

I knew I'd heard about the TL783 from somebody here... Check out Jakob's G9 PSU! :wink:

Peace,
Al.

 

[b3groover]

[quote author="MikoKensington"]Here is my solution.

www.kitsparts.com

Go to high end audio.
Then to preamplifiers.
Towards the bottom you'll find a preassembled solution for $70 shipped.[/quote]

Holy ****! Where did you find that!? I've been looking for something like that for awhile. I was just about to order some parts to make my own (which is almost the same price as that kit). THANK YOU!

Hey man, I got some cool schematics on how to convert those Quad Eight line cards to mic pre's too. PM me if interested.

Thank you again!

 

[b3groover]

Ah, I recognize those boards now. This place is selling those on eBay. So the full kit is $70 without tubes but does that include the transformer?

 

[MikoKensington]

The transformer is $25 extra. Keep in mind shipping is included in that price.

 

[b3groover]

Have you ordered a PSU yet? Just curious...

 

[MikoKensington]

No I've had some people back out of deals. So I'm broke, right now.