The invention discloses a
time sequence control circuit, which comprises a power supply, a trigger
signal switch, a first electronic switching circuit, a second electronic switching circuit, a first
control circuit, a second
control circuit, a
Resistor Capacitor (RC) power-on
delay circuit and a power-off
relay circuit, wherein the first electronic switching circuit is connected in series between the power supply and a first
voltage output end; the second electronic switching circuit is connected in series between the power supply and a second
voltage output end; the first control circuit is connected between the trigger
signal switch and the first electronic switching circuit; the second control circuit is connected between the trigger
signal switch and the second electronic switching circuit; the
Resistor Capacitor (RC) power-on
delay circuit is connected between the first
voltage output end and an input end of the second control circuit; and the power-off
relay circuit is connected between the second voltage output end and an input end of the first control circuit. The
time sequence control circuit can simultaneously
control power-on time sequences and power-
off time sequences of different power supplies of an internal
chip of equipment, increase the reliability of the running of the equipment and the
chip, and extend the service life of the equipment and the
chip; besides, the
time sequence control circuit has the advantages of simple structure, low manufacturing cost, simple process and suitability for large-scale popularization.