Solid state timer-stepper with soft switch-on and switch-off loa

Details Solid state timer-stepper with soft switch-on and switch-off loa Solid state timer-stepper with soft switch-on and switch-off loa

1976-06-03

1977-07-19

Miller, Jr., Stanley D.

Electric lamp and discharge devices: systems

Regulation of the control current and/or potential applied...

307252B, 315195, 315291, 315360, 323 24, 323 25, 328 75, G05F 100, H05B 3702, H05B 3902

Patent

active

040371352

ABSTRACT:
A timer-stepper, which is particularly applicable to light chasers for producing a special "ripple" lighting effect and increasing bulb and logic circuit component lives, having photoncoupler phase-shifting networks in the gate circuits of switching triacs for "softness" during switching and for isolating the logic of said timer-stepper from A.C. line or switching transients.

REFERENCES:
patent: 3500174 (1970-03-01), Ellerbeck
patent: 3612945 (1971-10-01), Stevens
patent: 3778676 (1973-12-01), Keller
patent: 3781604 (1973-12-01), Scarpino
patent: 3821634 (1974-06-01), Sabolic
patent: 3859591 (1975-01-01), Saunders
patent: 3896369 (1975-07-01), Nakata
patent: 3898516 (1975-08-01), Nakasone
patent: 3911331 (1975-10-01), Jamieson
patent: 3940660 (1976-02-01), Edwards
patent: 3952242 (1976-04-01), Ukai
patent: 4008416 (1977-02-01), Nakasone
patent: 4010412 (1977-03-01), Forman

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