SCR motor voltage controller

Details SCR motor voltage controller SCR motor voltage controller

1974-04-05

1976-02-10

Scott, James R.

Electricity: motive power systems

Battery-fed motor systems

318341, H02P 706

Patent

active

039380157

ABSTRACT:
A voltage control circuit for a motor, such as a vehicle motor, energized from a battery. The circuit utilizes a commutating capacitor and a main pass SCR, and includes a separate capacitor charging circuit which always charges the capacitor to twice the unloaded battery voltage, the capacitor being charged whether or not the main pass SCR is on. The circuit operates at a fixed pulse frequency and has a manually operable potentiometer which controls the pulse width, whereby the effective DC voltage output to the motor is correspondingly controlled.

REFERENCES:
patent: 3223909 (1965-12-01), Sensing et al.
patent: 3437826 (1969-04-01), Kelley
patent: 3588654 (1971-06-01), Balazs
patent: 3716767 (1973-02-01), Kuriyama et al.
patent: 3753155 (1973-08-01), Opal et al.

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