Control circuit for electronic measurement characteristic - has comparators to which different reference voltages are applied, with switches applying second reference voltages

摘要

The device has comparators (K7-K12) to whose one inputs the test variable is applied, and their second inputs are connected to a voltage divider consisting of a first reference voltage source (D1) and resistors (R4, R11-16), so that a different, definite voltage is applied to these inputs of comparators (K7-K12). A switch (T7-T12) is allocated to each comparator (K7-K12), through which a second reference voltage source (D2) is applied through a resistor (R36-R41) to the input (E3) of an output amplifier (V3, at which the test variable also appears. The electronic characteristic is incrementally controlled.