Protection circuit burning bright spots of a kinescope with constant extended downtime grid.

摘要

A voltage source switching power supply (30) is applied to a potential divider (54, 55) and coupled to an output terminal (52) via a CAPACITOR (53). An outlet (57) potential divider coupled to an output terminal via a transistor conductive path BASIC GROUNDED (60). IN OPERATION, THE TRANSISTOR (1) OPERATE IN A WAY REVERSE CHARGING INITIALLY THE CAPACITOR, (2) WORK OR IN A NORMAL OR SO IN A WAY INVESTED TO REGULATE A bias voltage grid said output terminal TO FLOW CURRENT GRILLE any direction from output terminal Y (3) OPERATE IN A WAY ISOLATED TO REMOVE THE TENSION POWER sWITCHED THROUGH WHICH THE CAPACITOR APLICA BIAS CUT NEGATIVE output terminal, AVOIDING SUCH TRANSISTOR IN SUCH MODE DISCHARGE CAPACITOR ISOLATED PROVIDING, this way, a polarization CUTTER said output terminal HAVING A LOCKOUT TIME CONSTANT PROLONGED DUE TO LACK OF ANY DISCHARGE FOR JOURNEY CAPACITOR than a dispersion.