Sound intermediate frequency amplifier for a broadcast receiver.

摘要

Within a broadcast receiver like a television receiver audible interference in sound generally called "POP" did occur during switching from "OFF" status to "ON" status or from "Stand-by" status to "ON" status. It is an object of the invention to prevent such audible interference like "POP". According to the invention a dc voltage operating source (U1) is connected to the operating voltage terminal (11) of the SIF-IC (3) via the collector/emitter-path of a transistor (T1) and that a second source of operating voltage (U2) is connected via a RC integrated network (R2, C2) to the base of said transistor (T1), the base being connected to ground via a zener diode (Z1). Especially for a television receiver. <IMAGE>