Method of and a circuit for indicating the optimum adjustment of

Details Method of and a circuit for indicating the optimum adjustment of Method of and a circuit for indicating the optimum adjustment of

1981-09-29

1983-11-29

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

15 49C, 15339, 340540, 340691, G08B 2100

Patent

active

044183429

ABSTRACT:
The method of and the device for indicating the optimum adjustment of the effective length of bristles of a bristle roller in a floor cleaning appliance driven by an electric motor is based on the measurement of a voltage drop across a resistor connected in series with the electromotor; the voltage drop is applied to a switching circuit including two parallel branches of series connected switching diodes with light-emitting diodes so as to activate the light-emitting diodes when the voltage drop exceeds the bias determined by the threshold voltages of the switching diodes.

REFERENCES:
patent: 3011188 (1961-12-01), Menche
patent: 3662418 (1972-05-01), Kamiya
patent: 3809985 (1974-05-01), Krause et al.

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