Analog integrator circuitry with HF tolerance - uses two parallel arrangements of resistance, transistor and inductance

摘要

A signal (ue) is fed to base of transistor (1). A resistor (3) and an inductor (4) are connected to the collector and emitter of transistor (1) respectively. A similar arrangement runs in parallel. Positive circuit voltage is applied to resistors (3,6) and negative voltage, via constant current device (9) to the inductors (4,7). The integrated signal (ua) can be taken off at the collector of transistor (5). The inverse signal (bar ua) operates at the collector of the transistor. Response can be improved by additional transistors at the collectors of the transistors (1,5) and by resistors parallel to the inductors (4,7). USE/ADVANTAGE - Active integrater integrating wide band signals over several frequency octaves without errors.