This paper expounds the group delay distortion problem existing in the single-channel IF modulation television transmitter and its negative influence on the pictures,and advances the correcting schemes and the alternative correcting circuits.

5 Hz and keep the optimum damping remaining via cascade connection correcting circuit.

This paper puts forward the practical methord of realizing ultra low frequency vibration sensor by means of magnetoelectric speedometer,through the series type correcting circuit,the measurable minimum frequency is reduced to less than 0.

This paper discusses the basic features of the distance adjustment on the locomotive running recorder, which has been developed by Yongan Maintenace Section.

A Design with the Analog Piecewise Linearity Corrector;