_____
From: Ken Javor [mailto:[email protected]]
Sent: Wednesday, March 14, 2007 7:30 AM
To: [email protected]
Subject: Re: OT: standard component values
I have heard that carbon composition resistors are no longer allowed to be
used in commercial products because they burn when mistreated. I can
personally attest to that, but I keep a bunch around because they are
excellent resistors at high frequencies.
A few months ago, I was reminded of another use for those carbon comp
resistors. I was tuning up an old 300 Watt ham SSB transceiver when I was
rudely disturbed by a pair of small explosions. Two 1/2 Watt carbon comp
resistors had been placed between the transmitter's final tube cathode and
ground, intended to act as fuses to limit final current. It worked as
designed; all that was left were the resistor leads hanging in mid-air.
Ed Price
<mailto:[email protected]> [email protected]
NARTE Certified EMC Engineer & Technician
Electromagnetic Compatibility Lab
Cubic Defense Applications
San Diego, CA USA
858-505-2780 (Voice)
858-505-1583 (FAX)
Military & Avionics EMC Is Our Specialty
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