Solid state motor control system

Details Solid state motor control system Solid state motor control system

1973-06-08

1976-03-02

Dobeck, B.

Electricity: motive power systems

Automatic and/or with time-delay means

Nonresponsive or less responsive for limited periods

318453, 318484, G05B 1116

Patent

active

039420868

ABSTRACT:
In a friction-fusion apparatus a solid state control circuit including a triac connected in series with an electric motor, and a control circuit connected across said triac including a resistor and a capacitor and a diac connected between the junctions thereof and the gate electrode of the triac. A voltage control circuit across the capacitor normally limits the voltage across the capacitor to an amplitude insufficient to trigger the diac and is operative in response to a manually actuated switch to increase that voltage, thereby triggering the diac and rendering the triac conductive to operate the motor for a selected time interval.

REFERENCES:
patent: 2884531 (1959-04-01), Bosch
patent: 3456179 (1969-07-01), Joslin
patent: 3523234 (1970-08-01), Turtle
patent: 3546556 (1970-12-01), Benkert et al.
patent: 3596158 (1971-07-01), Watrous
patent: 3634874 (1972-01-01), Mason
patent: 3669799 (1972-06-01), Vilcins et al.
patent: 3739198 (1973-06-01), Clements
patent: 3742337 (1973-06-01), Digneffe
patent: 3761789 (1973-09-01), Krafft et al.
patent: 3783362 (1974-01-01), Basso et al.

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