Intermittent low speed control for motor operated appliance

Details Intermittent low speed control for motor operated appliance Intermittent low speed control for motor operated appliance

1984-07-09

1986-02-04

Simone, Timothy F.

Agitating

Mixing chamber removable from stirrer and support

With motor control

318325, 318327, 366197, 366601, B01F 1300

Patent

active

045681937

ABSTRACT:
A food preparation appliance including a housing, an electric motor supported in said housing and adapted to receive alternating current. A tachometer senses rotation of said electric motor and feeds a tachometer signal to a frequency to voltage converter. A conversion ratio between said tachometer input signal and an output signal of said frequency to voltage converter is alterable by actuating a timer which causes a speed of the electric motor to decrease. The output signal of the frequency to voltage converter is supplied to an error amplifier where it is compared with a setpoint signal to generate an error signal supplied to a triac which controls a flow of electric power through the electric motor.

REFERENCES:
patent: 4227128 (1980-10-01), Cockroft et al.
patent: 4227181 (1980-10-01), Stahly et al.
patent: 4326153 (1982-06-01), Contri

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