[JMS] Lambda Model 28

[Don Buska]

Further, after I hit send I remembered more.  Yes, it is a linear supply
and I should have said "adjustable". It has a pot on the chassis to vary
the output DC voltage.  Also a respectable 6.3VAC output as well.  My
model 28 had the full schematic under the chassis cover. 

A great supply to power those SW-3's, SW-5's (be careful what filament
voltage tubes you have if you plan on using the 28's as a filament
source) and many one tube self-oscillating transmitters.

There are several versions of the model 28.  I noticed Bob Sullivan had
a much different chassis layout than mine.  I also have a version that
has meters for both output voltage and current.

73

Don N9OO 

-----Original Message-----
From: james_millen_society-bounces at mailman.qth.net
[mailto:james_millen_society-bounces at mailman.qth.net] On Behalf Of
dbuska at wi.rr.com
Sent: Tuesday, August 16, 2005 1:57 PM
To: The James Millen Society Members Email Reflector
Subject: Re: [JMS] Holy Smoke!

Hi Bill,

The Lambda Model 28 is a regulated DC supply with a range of around 150V
to 300V DC at 100mA.  Those value are from memory.  A very nice rack
mounted supply which is only about 5" high and only about five or six
inches deep behind the panel.  Uses a couple of 6Y6's as current amps.

A really nice and relaiable supply for BA projects.

73

Don N9OO

----- Original Message -----
From: Bill <w2dgb at ptd.net>
Date: Tuesday, August 16, 2005 1:49 pm
Subject: Re: [JMS] Holy Smoke!

> Don't know what the Model 28 is, but a fellow AWA member recently 
> recited a tale of woe on one of the nets involving a Lamda 28-volt 
> supply that he was trying to use on his ART-13. Seems it was (note the

> past tense) a switchingpower supply, and when he asked Lamda for 
> circuit info, it was refused. He bought a linear supply from Fair 
> Radio to solve the problem.  If you want more info get back to me. In 
> the meantime, yours could work just fine for years.
> 
> 73,
> 
> Bill W2DGB
> ----- Original Message -----
> From: "ronnie.hull" <ronnie.hull at glowbugs.com>
> To: "The James Millen Society Members Email Reflector"
> <james_millen_society at mailman.qth.net>
> Sent: Tuesday, August 16, 2005 2:05 PM
> Subject: [JMS] Holy Smoke!
> 
> 
> > I found a Lambda Model 28 today for $60!!    Getting closer...
> >
> > now ALL I lack is the HV supply..
> >
> > Ronnie
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