[time-nuts] Inside a CTS 1960017 OCXO

Jeremy Nichols jn6wfo at gmail.com
Mon Feb 29 00:30:47 EST 2016

My T-bolt is running on a Power-one International Series HCAS-60W-A supply,
hefty enough to run at least 4 more. Ripple and noise measure less than 100
micro-volts peak-to-peak. The T-bolt seems quite happy.


On Sunday, February 28, 2016, 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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