Remote load control

Details Remote load control Remote load control

1964-11-02

1976-03-23

Smith, Jr., David

Electrical transmission or interconnection systems

Switching systems

Switch actuation

340310R, H01M 1104

Patent

active

039462439

ABSTRACT:
Apparatus for periodically withdrawing power from an alternating current power signal on a power distribution line at the source of the power signal, including an inductance across the power distribution line in series with a silicon controlled rectifier at a frequency which is a sub-multiple of the frequency which is a sub-multiple of the frequency of the power signal and synchronized therewith and means for detecting the periodic variation in the power of the power signal at a remote location and performing a control function, such as turning off a water heater for a predetermined time in accordance therewith and the method of performing the control function including withdrawing power from selected cycles of the power signal and remotely detecting the withdrawn power and performing the control function in accordance with the detection of the withdrawn power.

REFERENCES:
patent: 1698770 (1929-01-01), Ohl
patent: 1971483 (1934-08-01), Espenschied
patent: 2348525 (1944-05-01), Cravath
patent: 2647253 (1953-07-01), Mackenzie et al.
patent: 2736887 (1956-02-01), Hunsicker
patent: 2981940 (1961-04-01), Garwin
patent: 3021520 (1962-02-01), Weber
patent: 3035251 (1962-05-01), Inderwiesen

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