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My Little Amplifier

LM386 gets a makeover

My Little Amplifier
My Little Amplifier
Even an IC that has clocked up some fifty years on the market is not necessarily hopelessly obsolete. A case in point is that several semiconductor companies are still making the LM386 power operational amplifier, and even now are bringing out new and improved versions.
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Materials

Component list

Component List

Resistors

R1 = 10Ω

P1 = 10kΩ log. law potentiometer

 

Capacitors

C1 = 330nF, 5mm pitch

C2,C4 = 10nF, 0.1’’ pitch

C3 = 100µF 50V, 3.5mm pitch, 8mm diam.

C5 = 47n, 0.2’’ pitch

C6 = 220µF 50V, 3.5mm pitch, 8mm diam.

 

Semiconductors

D1 = 1N4001

IC1 = 7805

IC2 = LM386

 

Miscellaneous

ST1 = PCB screw terminal block, 5mm pitch

DC adaptor socket

DIP-8 IC socket

Loudspeaker, 1W, 8Ω

PCB type ELPB-NG, Elektor Store # 150180-1

 

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