Broadband signal switching equipment

Claim 1

In broadband signal switching equipment of the type having a switching point matrix constructed with field-effect transistors in accordance with field-effect transistor technology, at whose matrix input lines respectively an input gate and an input drive circuit are connected in series therewith and whose matrix output lines are each provided with and connected to a respective output drive circuit having a threshold value, in which a precharge circuit, which is controlled with a precharge clock signal dividing a bit through connecting interval into a preload phase and a through-connect phase can charge the output lines in each preload phase to a preload potential lying between two operating potentials or to one of the two operating potentials, the improvement comprising: first means in the switching equipment for providing a through-connection of a matrix input line, charged with a fixed potential, to a matrix output line during each bit through-connect interval; and second means in the appertaining drive output circuit responsive to the signal potential of the connected matrix output line connected thereto for triggering an output signal when the threshold value of the appertaining output drive circuit is reached, and which is connected to the input gates so that the output signal blocks all matrix input lines.