INITIAL SIGNAL MUTING CIRCUIT FOR POWER SOURCE

摘要

The initial muting circuit using the saturation characteristics of a transistor or pop noise generated when the current source starts. A resistor (R11), a transistor (Q11) and a current source (I11) are connected to an input terminal of the input power (Vcc). A resistor (R12), a base of a transistor (Q12) and a base of the transistor (Q11) is connected to the resistor (R11). A collector of the transistor (Q12) and a base of a transistor (Q13) is connected through a resistor (R13) to an emitter of the transistor (Q11). An emitter of the transistor (Q12) and a resistor (R14) are connected to an emitter of the transistor (Q13). The resistors (R14,R12) are connected to the ground (GND).