27 Apr
2011
27 Apr
'11
12:01 a.m.
Chuck Guzis [cclist at sydex.com] wrote:
It was common knowledge in the 1930s. I have a "Radio Engineering"
handbook from the late 30s that shows the consutruction of an audio
signal generator using a common panel lamp for temperature
compensation.
I saw the technique used once in a Practical Electronics article
sometime
in the 1980s (or thereabouts). So I don't think it was forgotten, just
not used very often.
Antonio
arcarlini at iee.org