TH17420EX - Television equipment with anti-burn circuitry with amplification, cut-off time constant of the grid. - Google Patents

Abstract

The selected voltage source is applied to the voltage divider and to the outlet via a capacitor. Divider junction The potential value is connected to the exit point through the current conduction line of The transistor on the base leg is grounded. The transistor operation is as follows: (1) operating in reverse for the initial charge of the capacitor (2) operating in either normal or in reverse. To maintain the grid bias voltage at the outlet for the current flow A In the direction relative to the exit point (3) works in a free-form The displacement of the supply voltage selected by the capacitor delivers Bias cut-off of the negative grid to the ejection point where the autonomous transistor prevents Bias cut off the grid at the exit point, which has a cut-off time constant. Is amplified due to the absence of any discharge path for the capacitor other than the current leakage.

Claims (1)

1. Grid bias control circuit for use with picture tubes. It consists of an entry point connected to the source of the selected and correct supply voltage. Through the capacitor generating pulses to the point of departure to generate force Push to usgrid with a positive value set at the output point for the lamp. When the voltage is applied and for generating grid cut-off pulses The negative at the outlet on the supply voltage connection for the separation of the lamp. Potential divider connected between the input and the source of potential. Ground and has an outlet point to provide a positive grid bias voltage. When the voltage is applied, there is an upper ground voltage.