Computer host and peripheral ON-OFF sequence control device

• Main Authors: LIU QIAN, JIANG PANPAN
• Format: Patent
• Language: English
• Published: 20.05.2015
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

A computer host and peripheral ON-OFF sequence control device belongs to the field of computers, and solves a problem that artificial control of the ON-OFF sequence of a host and a peripheral is not reliable. The computer host and peripheral ON-OFF sequence control device comprises a switch S, a single-phase bridge rectification circuit UR, a power-off delay time relay K1, an intermediate relay K2, a CD4060 binary counter, resistors R1 to R5, a slide rheostat PP, capacitors C1 and C2, and NPN triodes VT1 and VT2. A 220V AC (alternating current) power source, via the bridge rectification circuit UR, outputs direct-current power to the CD4060 for power supply. When the switch S is switched on, a K1 coil gains electricity and the peripheral gains electricity earlier than the host; and the host gains electricity later. When the switch S is switched off, a K2 coil loses electricity and the host loses electricity immediately and the power-off delay time relay K1 loses electricity and switches off a switch thereof after a time delay; and the peripheral is powered off later.