[time-nuts] Supply voltages for the Efratom 105243 10MHz OCXO

Ed Palmer ed_palmer at sasktel.net
Sun Mar 20 16:31:40 UTC 2011


Time Nuts are masters of esoteric minutia.  I, on the other hand, am the 
king of brute force and ignorance!  :-)

Ed


Mike Millen wrote:
> Thanks, Ed.
>
> Now why didn't I think of that?
>
> M
>
>
> Ed Palmer wrote:
>> Measure the wattage used by the heater at 24V and room temperature.
>> This is what's required to keep the oven at the proper temperature.
>> Lower the voltage to 20V and see if the heater draws the same wattage.
>> As a second check, measure the current drawn at 20V at startup and
>> then after warmup.  The difference tells you how much headroom you've
>> got until the heater runs full on.
>>
>> Ed
>>
>> Mike Millen wrote:
>>> Many thanks to both of you.
>>>
>>> Is it safe to assume that the oven has its own temperature control
>>> system?
>>> I ask, because I'd prefer to run it from  approx. 20v instead of 24v.
>>>
>>> With a controller (& a room-temperature environment) I'm hoping that
>>> it would still be
>>> operating at its design temperature with a lower voltage. 



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