Domestic appliance comprising a protected programming device

Details Domestic appliance comprising a protected programming device Domestic appliance comprising a protected programming device

1979-12-10

1981-12-01

La Roche, Eugene

Electric lamp and discharge devices: systems

Time-controlled

315119, 328 7, 361196, H05B 3702, H05B 4136

Patent

active

043038670

ABSTRACT:
A domestic appliance comprises a programming device receiving on-time information and for updating, by way of repetitious signals, the on-time yet to be completed. The repetitious signals continuously activate an activation signal which is independently terminated if the repetitious signals do not appear. When the activation signal is present, first and second switching components are activated so that a discharge tube can emit ultraviolet radiation. A detection element detects whether the first and second switching components are deactivated outside the on-time. If one of the two switching components remains active outside the on-time, the detection element supplies a signal to inhibit the next start signal.

REFERENCES:
patent: 4189665 (1980-02-01), van der Meulen

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