TH4403A - A circuit arrangement for suppressing interference in the transmission of numerical remote control signals. - Google Patents

Abstract

When there is interference with the switching signal Was created which has an additional effect on the control of the amplifiers. That the amplification of the control amplifier in the remote receiver was reduced

Claims (3)

1. The procedure for suppressing interference during numerical remote control signal transmission. Where the numerical remote control signal consists of a group of pulses with a tD interval fed to multiple sectors. Each sector is controlled by a control loop. And is fed to multiple pass bands of the numerical bar, whose output signal is connected to a comparator to suppress interference. It has the characteristic that at the output channel (c) of the numerical sector (11-15), there is an input signal for the auxiliary control loop acting on the first control loop. And when normal pulses (N) and disturbing pulses (S) appear at the output (C), the constant current source (21) is opened through the circuit (20) to contain the capacitor (8), which is connected to Into the control input of the controlled amplifier (4) and the discharge circuit (23) parallel to the capacitor (B) discharges the capacitor (8) with a constant current (JE) greater than the average current which generates By numerical signal (N) and which noise (S) generates auxiliary load current (ILS) for the capacitor (8), which adjusts the voltage to the controlled amplification reduction factor (4) as a result of a control balance. When the load current (ILN + ILS) for the capacitor (8) by the signal (N) and (S) is equal to the no-load current at (IZ) of the capacitor (8). 2.The procedure according to claim 1 is characterized by that a constant, constant current that acts as an amplification, is placed on the capacitor (8). 3. The procedure in accordance with claim 1 or 2 is characterized by that the recharging current (I2 for the reduction of amplification is adjusted so that When the input signal is released from interference Inert recharging current for less decreases than constant recharging current. (IZ) for increasing the expansion of the amplifier (4)