Circuitry and method for controlling power to fastener machine s

Details Circuitry and method for controlling power to fastener machine s Circuitry and method for controlling power to fastener machine s

1986-06-30

1989-03-07

Salce, Patrick R.

Electricity: power supply or regulation systems

Input level responsive

Phase controlled switching using electronic tube or a three...

323325, 323326, 361160, 361206, G05F 502

Patent

active

048109525

ABSTRACT:
A method and apparatus for controlling power delivered to a fastening machine solenoid comprises a half wave rectifier, a filter network, an adjustable frequency generator and a pulse conditioning circuit. The frequency of the frequency generator is varied in accordance with fluctuations in peak AC line voltage and is input to driving circuitry which engages a solenoid at a predetermined time and for a specific amount of time. By increasing or decreasing the solenoids on time in accordance with power line voltage fluctuations, a pulse of constant power will be received by the solenoid, regardless of fluctuations in power line voltage.

REFERENCES:
patent: 3935530 (1976-01-01), Tanaka et al.
patent: 4047096 (1977-09-01), Madewell
patent: 4311955 (1982-01-01), Murakami
patent: 4353112 (1982-10-01), Rietveld et al.
patent: 4425611 (1984-01-01), Easter
patent: 4468569 (1984-08-01), Norris
patent: 4490771 (1984-12-01), Huber et al.
patent: 4500938 (1985-02-01), Dulin

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