Television apparatus with supplementary kinescope blanking and spot burn protection circuitry

摘要: Supplementary grid blanking and spot burn protection are provided in a receiver/monitor (10) by bias control circuit (50) including signal generator (60) that produces output (S1) devoid of any picture representative component whenever vertical (VB) or horizontal (HB) is present. A capacitor (C1) strips DC from the resultant (S2) applied to modulation input (84) produce an reference voltage (Vr) modulated AC signal. The coupled via (100) coupling (120) grids three projection kinescopes (16, 18, 20). Distortions which may tend appear pulses corrected high frequency correction (140) between (66) composite (122) (120).