Here is other elementary route to tongue-tied the volume of Audio gadgets by elementary touch. It exploits the action of the flip-flops in the timer IC 555 to lower the volume of the Audio amplifier.
IC NE555 is written in the toggle mode. Its lower and top comparator inputs are related to the hold bowls that may be surface switches or two pieces of conducting plates. The inputs of comprators are stabilized by R1 and R2 to prevent floating. When the hold image related to pin 2 is overwhelmed momentarily, outlay of IC1 goes high and T1 conducts. The centre daub of the volume manage is related to the gatherer of T1. So when T1 conducts stream going to the amplifier drains by T1. This reduces the volume.IC1 waste latched in this location with LED on. When the hold image related to pin 6 is overwhelmed momentarily, outlay of IC1 goes low and T1 turns off. This restores the volume.
D.Mohankumar
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