**broken link removed**GAIN CONTROL
To make the LM386 a more versatile amplifier, two pins (1 and 8 ) are provided for gain control. With pins 1 and 8 open the 1.35 kΩ resistor sets the gain at 20 ( 26 dB ). If a capacitor is put from pin 1 to 8, bypassing the 1.35 kΩ resistor, the gain will go up to 200 ( 46 dB ). If a resistor is placed in series with the capacitor, the gain can be set to any value from 20 to 200 ..
danesh said:hi ,
do anyone know hw to calculate gain for this circuit?