[time-nuts] Inside a CTS 1960017 OCXO

[Bob Camp]

Hi

For a lot of years the Power Designs supplies were the best kept secret 
in the business. Everybody thought they had “discovered” them for phase
noise testing. 

They still are a pretty good deal surplus.

Bob

> On Feb 28, 2016, at 10:25 PM, Dave M <dgminala at mediacombb.net> wrote:
> 
> Pete Lancashire wrote:
>> ... I was using an HP lab supply>>>
>> 
>> Model ? Age ?
>> 
>> My bench has some pretty old HP's even Harrison Lab branded supplies.
>> I
>> have had to re-cap a few of them.
>> In a way it is almost a curse how reliable their supplies were. You
>> always got the V and I you wanted so one
>> never thought about the filtering getting worse over the years.
>> 
>> Also HP had two variations of their bench supplies. The basic ones
>> and the low noise versions. When I need
>> to make measurement like this, I make sure I'm using one of the low
>> noise/ripple models.
>> 
> 
> Adding my few cents' worth to the power supply ripple/noise thoughts, I've found that the old linear supplies by Power Designs Inc were among the best, at considerably lower cost than the HP/Harrison Labs units.
> Ripple/Noise in the low millivolts and high microvolts, 0.01 - 0.005% regulation and temperature stability in the neighborhood of 0.01%/degC were common.
> I have a couple on my bench, and they just keep on working.  They still pop up at auction frequently.
> 
> Cheers,
> Dave M 
> 
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