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- From: glusk@mechcad3.esd.sgi.com (Mark Glusker)
- Newsgroups: sci.electronics
- Subject: Question Re: BROKEN TUBE AMP
- Message-ID: <1992Nov17.155524.2722@odin.corp.sgi.com>
- Date: 17 Nov 92 15:55:24 GMT
- Sender: news@odin.corp.sgi.com (Net News)
- Organization: Silicon Graphics, Inc.
- Lines: 20
- Nntp-Posting-Host: mechcad3.esd.sgi.com
-
- In his reply to nasiom@vccnw10.its.rpi.edu (Milton Peter Nasiopoulos),
- sehari@iastate.edu (Babak Sehari) writes:
-
- > Q. How to check specker impedance.
- > A. Use a signal generator, to generate a 1KHz signal put the speaker
- and
- > a one ohm resistance in series, and connect the speaker-resistance
- > combinations to the signal generator. Measure, the voltage across the
- > speacker and the one ohm resistor. Now you can calculate the speaker's
- > resistance at 1KHz. Also check the DC resistance of the speaker with
- > ohm-metar.
-
- My question is; does this procedure work at radio frequencies, provided one
- uses an AC voltmeter that responds over those frequencies? Is this a good
- alternative to using devices like RF bridges or Q-meters to measure
- reactances at radio frequencies?
-
- Thanks in advance for your help and advice,
-
- Mark Glusker
-