Circuit for controlling the frequency of a pulse generator associated with a microprocessor
AssigneeNSM Apparatebau GmbH Kommanditgesellschaft
InventorArjen J. Mulder
Life of this patent
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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.
Claims4
In a circuit for controlling the operation of a microprocessor which receives electric energy from an AC source, a combination comprising a pulse generator operatively connected to the microprocessor;
- and means for controlling the operating frequency of the pulse generator, including an RC-stage operatively connected to the pulse generator and including a resistor having a resistance value which is variable by a control signal issuing from the microprocessor and which results from a comparison of the pulse frequency with the AC-source frequency.
Dependencies are inferred from the claim text.