A television camera provided with a tube of collection of television and a compensation circuit of the interference signals at low frequency, in particular the microphony

摘要

P television camera provided with a compensation circuit of the interference signals at low frequency, in particular the microphony. An oscillator, giving a rectangular signal or a sinusoidal signal with a frequency greater than or equal to twice the highest frequency of the normalized image signal and delivers a signal to the cathode of the tube, the recovery with a tip to tip which is greater than the voltage excursion of the local maximum possible, on the target of the tube, the recovery. For this reason, the electron beam can alternatively be achieved, and do not reach the target. It produces an image signal modulated in amplitude comprising microphony which is derived by demodulating a signal of the image is not modulated without microphony. / p & & p & application to the television cameras. / p