Electricity: power supply or regulation systems – Input level responsive – Phase controlled switching using electronic tube or a three...
Patent
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.
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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
Salce Patrick R.
Swingline Inc.
Todd Voeltz Emanuel
LandOfFree
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