Multi-mode control circuit and indicator arrangement for an electrical appliance
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United States of America Patent
Stats
-
Nov 3, 1992
Grant Date -
N/A
app pub date -
Dec 6, 1988
filing date -
Dec 6, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A time-based electrical appliance multi-mode control circuit and indicator arrangement which is connected to a power supply and an on and off switch. Upon turning the switch on, power is simultaneously supplied to the electrical appliance load and to a dual timer circuit. A first timer in the circuit is immediately energized causing a first indicator to represent an on state to the user. After a predetermined length of time, the first timer causes one output to go low, turning off the on state indicator and respectively turning on a ready state indicator. A second timer is then activated for a second predetermined period. At the end of the second period, the ready state indicator is turned off and the standby state indicator is turned on. At the same time, a triac connected to the electrical appliance load is turned off causing the power to the load to be automatically switched off.
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Family
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Cited Art Landscape
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