Electric appliance standby voice prompting device
A voice prompt, electrical appliance technology, applied in the direction of instruments, alarms, electrical program control, etc., can solve problems such as unfavorable electrical appliance maintenance, affecting electrical appliance life, causing accidents, etc., to solve standby safety problems, simple control circuits, and enhanced energy saving. effect of consciousness
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[0014] Electric standby voice prompt device, such as figure 1 , figure 2 As shown, when the main control appliance is off or on standby, and the output is less than the set power, a voice reminder will enhance the awareness of energy saving of appliance users and remind people to cut off the power. The device is composed of a power switch, a system power supply, a detection control circuit, a voice circuit, an indicator light, a main control output terminal and an output terminal of peripheral electrical appliances.
[0015] Among them: K1 is the power switch, and the output terminals of peripheral electrical appliances can be connected to multiple electrical appliances. T1 uses a 6-12 V, power 4W power transformer; C1-2 is an electrolytic capacitor, C3-4 is a ceramic capacitor, R1-6 is an ordinary resistor, Q1 is an NPN transistor; D1-5 is a diode, and the indicator light is luminous Diodes TD1, TD2, and IC1 are comparators LM358; IC2 uses L7805 three-terminal voltage regulato...
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