Start-up control circuitry for a television apparatus.

摘要

A supply voltage (VS) is developed in accordance with an on/off control signal (110) of a remote receiver (111) during a start-up interval and during a power-up mode of operation of a television power supply. During a standby mode of operation, the supply voltage (VS) is switched off. The supply voltage (VS) produces a supply current in an oscillator (777) that produces a signal (SH) at a horizontal rate related frequency. The supply voltage (VS) also produces a base drive current (ibQ4) in a switching transistor (Q4) of a horizontal driver (666) only during the start-up interval. During a power-up mode, a run supply voltage (V+) is coupled to the oscillator (777) and to the driver (666).