Solid-state flipper control circuit

Details Solid-state flipper control circuit Solid-state flipper control circuit

1991-01-08

1992-03-03

Grieb, William H.

Amusement devices: games

Surface projectile game; game element

Projectors

273119A, 273129R, 361154, A63F 702, H01H 4732

Patent

active

050925970

ABSTRACT:
A solid-state flipper control circuit for controlling the operation of a pinball machine includes a flipper, a flipper switch, and a solenoid coil for controlling the movement of the flipper. The flipper switch is formed as a microswitch having a common terminal connected to a ground potential and normally-open contact terminal. A solid-state driver circuit is provided which is responsive to the activation of the microswitch for generating momentarily a first voltage on its output terminal so as to move the flipper to the actuated position. The solid-state driver circuit includes a timer for automatically disconnecting the first voltage after a predetermined time and for generating subsequently a second voltage so as to hold the flipper in the actuated position until the microswitch is deactivated.

REFERENCES:
patent: 4203602 (1980-05-01), Kral
patent: 4384716 (1983-05-01), Powers
patent: 4399483 (1983-08-01), Phelan
patent: 4511945 (1985-04-01), Nielsen
patent: 4599674 (1986-07-01), Ishikawa et al.
patent: 4790536 (1988-12-01), Deger
patent: 4895369 (1990-01-01), Deger

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