Startup and shutdown delay self-locking circuit for medical X-ray machine

Abstract

The utility model discloses an on-off time-delay self-locking circuit for a medical X-ray machine, and the circuit comprises a time-delay circuit which comprises a first resistor, a charging capacitor, a second resistor, and a first switching tube; the first resistor is used for charging the charging capacitor when a switching signal of a switching port is turned on, and the second resistor and the charging capacitor form a parallel loop so as to discharge the charging capacitor when the switching signal is turned off. After the charging capacitor finishes charging, the first switch tube is switched on to finish the start-up delay of the medical X-ray machine; and the self-locking circuit is connected with the time delay circuit. According to the circuit, the charging capacitor is charged through the first resistor, and the first switch tube is conducted after the charging capacitor finishes charging, so that the start-up delay of the medical X-ray machine is realized, the start-up delay can prevent current impact at the start-up moment from damaging internal electronic components of the equipment, and the service life of the equipment is prolonged.

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