[time-nuts] Commercially available empty ovens for oscillator testing?

Bernd Neubig BNeubig at t-online.de
Mon May 14 12:49:43 EDT 2018


Hi Julien,

I have a few vintage thermostats from the early 70's manufactured by Northern Engineering Laboratories those days. They come in a cylindrical housing with an "octal" tube socket. The temperature control is done by a bi-metallic switch to +75 degC nominal. Supply voltage is  6V. See attached photos. Inside are two sockets suitable for the good old HC-6/U size crystals (12.35 mm lead spacing)
I have measured the response at one sample giving the following results:
Power consumption < 6 W
after warm-up : 2.2 W
If isolated with styrofoam: 1.5 W
Switch-on/off after warming up 12 sec/22 sec
temperature max-min after warm-up: 0.3degC peak-peak

If such a device is suitable for your needs, let me know by direct private mail

Best regards
Bernd  DK1AG



-----Ursprüngliche Nachricht-----
Von: time-nuts [mailto:time-nuts-bounces at febo.com] Im Auftrag von Julien Goodwin
Gesendet: Samstag, 12. Mai 2018 18:55
An: TIme Nuts <time-nuts at febo.com>
Betreff: [time-nuts] Commercially available empty ovens for oscillator testing?

Does anyone know if there's anyone who sells essentially just the oven & casing for an OCXO on its own?

I have a project for which I'm currently using a VCTCXO, but I'm wondering if enclosing a plain VCXO, plus the control DAC & voltage reference in a single small oven would end up more stable, and possibly not even much more expensive.
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