[GreenKeys] HP 6207B DC supply

[Chris Elmquist]

On Sunday (08/26/2012 at 11:44PM -0400), Roy Morgan wrote:
> 
> On Aug 25, 2012, at 1:10 PM, Chris Elmquist wrote:
> 
> >I think the HP 6207B 160V DC supply ...
> >When I power it up, the voltage comes up in three steps.  It goes to
> >about 30v and pauses, then to 100v, pauses again and finally gets
> >to 120
> 
> Chris,
> 
> I see this is an HP thing, not a WE thing.
> Some of the WE teletype supplies were built with a voltage
> regulating transformer, similar to a Sola, were they not?

Hi Roy.   The HP 6207B was not designed as a loop supply per se.
It's just a voltage regulated, constant current, adjustable (0 - 160V)
DC bench supply.  It's real handy to use as a loop supply as it has the
current limiting adjust and a max current of 200mA.

I'm not too familiar with all the WE loop supplies.  I do have a Teletype
model REC45 loop supply here...  It does not have a regulating transformer
but instead a multi-tap secondary with taps at roughly 10V increments,
a bridge rectifier and filter cap.  This one has no regulation otherwise.

Chris N0JCF

-- 
Chris Elmquist