Electric home appliances

Details Electric home appliances Electric home appliances

1978-07-20

1981-06-30

Thesz, Joseph M.

Registers

Platform operated

Platform actuated traffic counters

235 92MT, 235 92TF, 235 92CA, 235 92DE, G06M 302

Patent

active

042764688

ABSTRACT:
An electric home appliance which is automatically controllable with use of a sensor such as temperature sensor or humidity sensor. Variations in terms of analogue quantities given by the sensor are converted to variations in the number of pulses by an oscillator connected to the sensor and comprising an astable multivibrator or the like. The number of pulses is counted by a counter, the gating time of which is determined for example by divided frequency of a commercial power supply. The control system is inexpensive to make and has high reliability.

REFERENCES:
patent: 3790910 (1974-02-01), McCormack
patent: 3979056 (1976-09-01), Barnes
patent: 3988577 (1976-10-01), Leitner
patent: 3996451 (1976-12-01), Harrington et al.
patent: 4027143 (1977-05-01), Witriol et al.
patent: 4047001 (1977-09-01), Witriol et al.

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