Apparatus and method for generating clock pulses from a power se

Details Apparatus and method for generating clock pulses from a power se Apparatus and method for generating clock pulses from a power se

1981-12-10

1983-08-23

Kellogg, Arthur D.

Glass manufacturing

Processes

With measuring, sensing, inspecting, indicating, or testing

65163, 318692, C03B 940

Patent

active

044001924

ABSTRACT:
An apparatus and method for generating clock pulses to an electronically controlled glassware forming machine from the variable frequency power present in a power selsyn multiple motor drive system is disclosed. The frequency of the power present in the selsyn rotor windings is subtracted from the frequency of the power present in the selsyn stator windings to generate a difference frequency signal. The difference frequency signal has a frequency which is directly proportional to the speed of the rotating selsyn rotors. The difference frequency signal can be scaled to provide a desired number of clock pulses and reset pulses per machine cycle.

REFERENCES:
patent: 3593095 (1971-07-01), Davis
patent: 4145204 (1979-03-01), Farkas et al.
patent: 4145205 (1979-03-01), Farkas et al.

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