Resonance circuit arrangement for automatic tuning in tuner engineering of e.g. radio industry, has circuit inductor, circuit capacitor and parallel circuit of reactances that are switched-on and switched-off by switch arrangement

摘要

The arrangement has a circuit inductor (2), a circuit capacitor (3) and a parallel circuit of reactances (5), where a signal provided by a supply device (1) is stored in the arrangement. The reactances are provided in the form of capacitors and a resistor (7) that stays in connection with a circuit earth (6). The rectances are switched-on and switched-off by a controllable switch arrangement (4), and a window discriminator (10) is provided for determining permissible deviation between actual and reference values of turning processes of the arrangement.