Logic circuit connected to two differential potentials - has transistor input of detector connected to common conductor in logical negation circuit

摘要

The logic circuit has more than two separate conductors each connected to a common conductor via a resistor and a diode. The independent conductors are selectively connected to two differential potentials which represent possible values of logical variables. An input (2) of a detector circuit with a transistor amplifier is connected to the common conductor in a logical negation circuit. The common conductor, which is connected to the control electrode of the amplifier, will determine the setting potential for the operating point of the amplifier. An alternating signal offered to the input produces an alternating signal at the output when the woring point is in the amplifier region of the characteristics whereas the amplifier will be bottomed or saturated if the operation point outside of the amplifying region. This means no signal output.