On Fri, 12 Feb 1999 08:47:45 -0800 Rich Measures <measures@vc.net>
writes:
>
>
>
>>
>>Anyone with comments on the above mentioned inductor? How would this
>>thing work in a
>>
>>a. 3CX1500A7 amp
>>b. 3CX3000A7 amp
>>
>>covering 160-10m ? Or should I wound again my own coil?
>>
>For a 3CX3000A7, the approx. tank circulating current with a Q of 12.5
>is
>2.5A x 12.5 = 31A-rms. Since contact dissipation is: P=I^2 x R,
>might
>not 31A be a bit much to expect from 10A-rated contacts?.
>
>- later, Carsten
If you left a brick on the key and went to a movie, maybe. I would also
suggest that 2.0A x 12.5 = 25A RMS would be more realistic. A Q=10 would
then give 20A RMS .
In either case the SSB or CW duty cycle would be no problem. Add a little
air flow for more overhead and the RTTY types. Were you not a big
proponent of air flow on tank circuits? Maybe only when it suits the
discussion.
In the case of the SSN inductor the multiple rollers are the most
important step to reliability.
Later yourself
73 Carl KM1H
>
>> 2-10 kw Power Handling
>> Taper Wound Front End
>> Edge Wound Coil All Silver Plated
>>
>>(IRV)RI-40: It's here at last! The ultimate variable inductor. Isn't
>>your tuner or amplifier project worth the very best? Made exclusively
>>for Surplus Sales of Nebraska.
>>
>>.1-40 uH variable edge wound inductor. Taper wound lower end (higher
>Q)
>>for better results beyond 20 MHz. Enough inductance for work below
>160
>>meters too. All rf surfaces are thick silver plated. Quad 10 amp
>>contact sets on all rotating connections; coil to rotar; rotor to
>shaft
>>armature; shaft armature to end
>>plate contacts. There are no weak links with our mil-spec design.
>>
>>Perfect for 2-10 kw antenna tuners, tank network for amplifier or
>>anywhere a larger, high Q, variable inductance is required. Be sure
>to
>>use our Turns Counter (SHW)TCV.
>>
>>5" wide, 5-1/4" high, 12-1/2" end to end, maximum dimensions. 1/4"
>>shaft. Optional end stop kit for motor drive schemes. Add $ for kit,
>pn
>>(IRV)RI-40ESK.
>>
>>--
>>FAQ on WWW: http://www.contesting.com/ampfaq.html
>>Submissions: amps@contesting.com
>>Administrative requests: amps-REQUEST@contesting.com
>>Problems: owner-amps@contesting.com
>>Search: http://www.contesting.com/km9p/search.htm
>>
>
>
>
>Rich...
>
>R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
>
>
>--
>FAQ on WWW: http://www.contesting.com/ampfaq.html
>Submissions: amps@contesting.com
>Administrative requests: amps-REQUEST@contesting.com
>Problems: owner-amps@contesting.com
>Search: http://www.contesting.com/km9p/search.htm
>
>
___________________________________________________________________
You don't need to buy Internet access to use free Internet e-mail.
Get completely free e-mail from Juno at http://www.juno.com/getjuno.html
or call Juno at (800) 654-JUNO [654-5866]
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|