Circuit for controlling the frequency of a pulse generator associated with a microprocessor
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United States of America Patent
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-
Nov 17, 1981
Grant Date -
N/A
app pub date -
Aug 29, 1979
filing date -
Sep 7, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A circuit for controlling the frequency of a pulse generator associated with a microprocessor that is connected to power line frequency, uses an RC-stage which is connected ahead of the pulse generator as the frequency-determining element and which has a resistor 19 that is variable by a control signal derived from the microprocessor. The control signal is obtained by comparing the power line frequency and the pulse frequency with one another.
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