CIRCUIT FOR DOUBLE PRODUCTION AND FOR PREVENTING OPERATION ERROR AGAINST X-RAY

摘要

PURPOSE: A circuit for double production and preventing error operation against X-ray is provided to be capable of enhancing the reliability of products from X-ray by adding a second X-ray protector for protecting the X-ray radiation due to abnormal high voltage of a flyback trans when the line of an existing X-ray protector is opened. CONSTITUTION: A horizontal pulse generator(12) controls the operation of a flyback trans(13) by an operation control signal of a horizontal IC(11) controlling the operation of the horizontal pulse generator(12). The flyback trans(13) is boosted by the horizontal pulse of the horizontal pulse generator(12) to generate a high voltage. An X-ray protector(14) is connected to a third coil(L12) to apply a high or low signal to an X-ray terminal of the horizontal IC(11) for the double protection against the X-ray radiation when an abnormal high voltage is generated from the flyback trans(13). A second X-ray protector(15) is connected to a resistor(R11) and a smoothing condenser(CHV) of the flyback trans(13) to apply a high or low signal to the X-ray terminal of the horizontal IC(11) for shielding the X-ray radiation when the line of the X-ray protector(14) is opened.