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What is this doofungus?
#10

codefox1 Wrote:This comesd up once a month or so here and elsewhere. Onc upon a time there were navigational beacons close to 455 KC which would interfere with radio reception. No longer an issue.

But this component has nothing to do with that. It uses a series-resonant 'wavetrap' configuration for improved bypassing at the IF frequency. Wavetraps to minimize beacon interference are located at the antenna input. Philco should have used a better term to avoid confusion.
Aerovox (and others) also made them without the need for the external winding and sold them as "resonant capacitors".


Messages In This Thread
What is this doofungus? - by rocketeer - 08-16-2011, 11:29 PM
Re: What is this doofungus? - by Ron Ramirez - 08-17-2011, 07:55 AM
Re: What is this doofungus? - by Dan Walker - 08-17-2011, 11:04 AM
Re: What is this doofungus? - by rocketeer - 08-17-2011, 07:53 PM
Re: What is this doofungus? - by rocketeer - 08-20-2011, 10:07 PM
Re: What is this doofungus? - by TexMac - 08-27-2011, 02:57 AM
Re: What is this doofungus? - by Arran - 08-29-2011, 01:13 AM
Re: What is this doofungus? - by exray - 08-30-2011, 05:58 PM
Re: What is this doofungus? - by codefox1 - 08-30-2011, 10:27 PM
Re: What is this doofungus? - by exray - 08-31-2011, 07:57 AM



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