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Alan
G3NYK
From: Hal Murray hmur...@megapathdsl.net
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Cc: hmur...@megapathdsl.net
Sent: Monday, 21 July 2014, 4:58
Subject: Re: [time-nuts] Diodes as temperature sensors
alw.k
Back in the 1970's I was tasked with coming up with a thermometer that could
be read in the studio of an AM radio station. I bought a Heathkit
indoor-outdoor unit. It worked great at night but was all over the place in
the daytime when the AM transmitter was on the air. Turned out the sensor
On Sun, Jul 20, 2014 at 7:07 PM, Al Wolfe alw.k...@gmail.com wrote:
Seems like there are IC's that contain two diodes, one as a sensor and one
as a heater. Part numbers escape me now.
You might mean the TMP36 family of sensors. They use diodes and must be
the most common sensor out there.
alw.k...@gmail.com said:
Apparently, the forward biased silicon diode was temperature sensitive
enough that a small D.C. amplifier could drive a meter to read-out with
reasonable accuracy. Well, maybe not accurate by Time-nut standards but
close enough for its intended purpose.
I think that
