A delay line providing an adjustable delay

Abstract From the Canadian patent

First and second complementary input voltages control current flow through first and, second switches (e.g. semiconductor devices) each respectively connected in first and second, control circuits with a first constant current source. When the input voltages change, current starts, to increase through one control circuit to produce increases in the voltage drop across an, impedance (e.g. resistor) in such circuit. When a particular voltage difference is produced between, the impedance voltage and an adjustable biasing voltage a third switch (e.g. , semiconductor, device) closes to produce a first resultant voltage. The resultant delay in the third switch closure is, dependent upon the …