how could i turn off lm386 when i plugged headphones and lm386 on when headphones not plugged . im using this circuit
This is a great amplifier too:
http://www.newark.com/texas-instruments/tpa6021a4n/ic-audio-power-amp-class-ab-2w/dp/43K4150?in_merch=Popular%20Products
Schematic shows you exactly how to wire a headphone jack switch into it.
