KR960035725A - Monitored Cathode Voltage Automatic Adjustment Circuit - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cathode ray tube of a monitor, and more particularly to a cathodic voltage automatic adjustment circuit of a monitor which is processed such that the excited voltage of the high voltage transformer is applied to the cathode terminal of the monitor. In the present invention as described above, after the output voltage of the high-voltage transformer (FBT) is processed, the output voltage of the cathode voltage output unit 1 and the cathode voltage output unit 1 applied to the cathode terminal G2 of the monitor is increased. The output voltages of the recognized cathode voltage recognizer 2 and the cathode voltage recognizer 2 and the reference voltage generated from the control signal Cs output from the microprocessor not shown in the figure are compared to the cathode. The cathodic voltage is muted by the drive signal generator 3, which outputs a drive signal for controlling the voltage, and the drive signal output from the drive signal generator 3, so that the cathode voltage is catastrophic when an abnormal occurrence of the cathode voltage occurs. A cathode voltage control section 4 is controlled so as not to be applied to the anode terminal.

Description

The monitor's cathodic voltage automatic adjustment circuit.

As this is a public information case, the full text was not included.

2 is a view showing the configuration of a cathodic voltage automatic adjustment circuit of a monitor according to the present invention.

Claims (3)

In the cathode ray tube applied to the cathode of the monitor after the positive component of the output voltage of the high-voltage transformer is integrated, the cathode voltage recognition means for detecting the cathode voltage applied to the cathode of the monitor, and the cathode voltage The driving voltage generating means outputs a driving signal for controlling the cathode voltage by comparing the output voltage of the recognition means with the reference voltage output from the microprocessor, and the cathode voltage is muted by the driving signal of the driving signal generating means. A method for automatically adjusting the cathode voltage of the monitor, characterized in that it further comprises an odd voltage control means. 3. The driving signal generating means according to claim 1, wherein the driving signal generating means outputs the capacitor C31 after the capacitor C31 is smoothed and the control signal Cs output from the microprocessor is distributed. Resistor (R31) (R32) that overlaps the voltage and is output as a reference voltage, the comparator (Comp) for generating a drive signal by comparing the output voltage and the reference voltage of the cathode voltage recognition means and the comparator (Comp) A method for automatically adjusting the cathode voltage of a monitor comprising a resistor (R33) and a capacitor (C32) capable of finely adjusting the cathode voltage after being fed back after the driving signal is filtered. The method of claim 1, wherein the cathode voltage control means comprises: a resistor (R41) and a diode (D41) rectified after biasing the input power source (Vcc), and a capacitor (C41) for smoothing the output voltage of the diode (D41); The transistor Q41 is switched by the output voltage of the capacitor C41, the transistor Q42 is switched by the drive signal of the drive signal generating means, and the amount of current of the transistors Q41 and Q42 is controlled. A cathodic voltage automatic adjustment circuit of a monitor, characterized by consisting of resistors (R42) and (R43). ※ Note: The disclosure is based on the initial application.