Method and circuit for operating a spray gun having a vibrating

Details Method and circuit for operating a spray gun having a vibrating Method and circuit for operating a spray gun having a vibrating

1981-05-07

1984-06-12

Witkowski, S. J.

Electricity: motive power systems

Reciprocating or oscillating motor

Energizing winding circuit control

318132, 417417, 239332, H02K 3300

Patent

active

044544561

ABSTRACT:
The invention deals with a method and a circuit for operating a spray gun having a vibrating armature drive which is energized with an electrical a.c. signal. To reduce the liquid which is sprayed per unit of time by the spray gun, a pulse width modulated energizing signal with abruptly rising leading edges is fed to the vibrating armature drive. The circuit includes a control circuit which produces a control signal with abruptly rising leading edges and a controllable switch which electrically couples a supply voltage source and the vibrating armature drive, the control terminal of the switch being connected to the output of the control circuit. The circuit may alternatively have a signal generator which produces a control signal with abruptly rising leading edges and a power amplifier connected to the output of the signal generator, the output of the power amplifier being connected to the vibrating armature drive.

REFERENCES:
patent: 3412300 (1968-11-01), Westenskow
patent: 3502026 (1970-03-01), Toyoda
patent: 3899134 (1975-08-01), Wagner
patent: 3966358 (1976-06-01), Heimes et al.
patent: 4027211 (1977-05-01), Omura et al.
patent: 4086518 (1978-04-01), Wilkinson
Understanding Solid-State Electronics, Developed and Published by Texas Instruments Learning Center, p. 174, copyright 1972, 1978.

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