I seem to recall that the Omni VI+ has 6 volts lamps which work with a
dimmer, typically at 5V. The power supply (Tentec) outputs 13.8. Yes,
14 volt lamps are the correct choice for a 13.8V supply. Be advised
that lamps such as the old standby #47 can be purchased as #1847. The
#47 lamps have a rated life of 5000 hours while the #1847 lamps have a
rated life of 20,000 hours.
If you are interested in long life lamps, choose a circuit which uses a
5V lamp with 5V applied as opposed to a circuit which uses a 24V lamp
with 24V supplied. The long filament in a high voltage lamp is subject
to mechanical shock and subsequent early failure. Also, lamps which are
supplied with AC as opposed to DC will last about 50% longer. Filament
evaporation is reduced due to polarity changes at 60Hz.
Bob K4TAX
Simmons Reid W wrote:
>
> Frank;
>
> I believe the PS for the Omni VI puts out 13.8 (mine does anyway) and I have
> not lost a bulb in the 8+ years I have had it. I have not looked at the
> bulb ratings in it but if I were the designer I would use 14 volt bulbs in a
> rig whose PS puts out 13.8 volts.
>
> Reid, K7YX
> Beaverton, OR
>
> -----Original Message-----
> From: Frank Krozel [mailto:frank@electronicinstrument.com]
> Sent: Thursday, September 14, 2000 9:34 AM
> To: tentec@contesting.com
> Subject: [TenTec] Ten Tec rigs and "other" power supplies
>
> I love to trade rigs, and from time to time I get a Ten Tec rig with burned
> out bulbs. In addition, I see people using a Ten Tec rig with "another"
> power supply.
> As the Ten Tecs all run at 12 volts, as opposed to 13.8 or higher volts, I
> am curious IF there is a connection with burned out bulbs ( are Ten Tec's
> rated at 12 volts? ) and using "other" supplies.
> My Ten Tec Triton II (yes 2!) still has the original bulbs in it, but the
> supply is the matching one, set at 12 volts or so.
> Frank Krozel
> KG9H
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