UN CIRCUITO PARA UNA DISPOSICION DE CIRCUITOS DE RADIOFRE- CUENCIA SINTONIZABLES, POR EJEMPLO PARA SINTONIZAR UN OSCI- LADOR

摘要

A circuit is provided for frequency drift compensation of a tuning diode in tunable RF-circuits, and comprises a temperature-responsive voltage divider coupled between an independent voltage supply source and a reference potential, the tuning diode being coupled to a tap of the voltage divider. In this circuit the separate tuning voltage source is not loaded down and may thus produce a tuning voltage which is independent of the variation of the voltage from the temperature compensation portion of the circuit.