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LM386 AF Amplifier Project. F&DARS January 2001. Construction Sequence. Baseboard and front panel LM386 amplifier board interconnections Power up and test. Main Layout Diagram. LM386 Board layout. LM386 Board Legend. IN = screened audio input lead connection. COMPONENTS LIST (1)

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LM386 AF Amplifier

Project

F&DARS January 2001


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Construction Sequence

  • Baseboard and front panel

  • LM386 amplifier board

  • interconnections

  • Power up and test




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LM386 Board Legend

IN = screened audio input lead connection


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COMPONENTS LIST (1)

Resistors

RV1 10k Log pot

R2 10R

Capacitors

C1 1 microF electrolytic, 16v

C2 100 nF ceramic

C3 10 microF electrolytic, 16v

C4 10 microF electrolytic, 16v

C5 100 nF polyester more...........


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COMPONENTS LIST (2)

Capacitors (contd)

C6 100 microF electrolytic, 16v

C7 1000 microF electrolytic, 16v

C8 100nF polyester

Integrated Circuit

LM386 Audio Amplifier chip

Miscellaneous Items

Loudspeaker: not less than 8R, dia as avail.

Switch: single pole, on-off more.........


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COMPONENTS LIST (3)

Input socket: e.g. phono

OP Socket: e.g. min shorting jack, 3.5mm

Battery connector for PP3 type

Battery PP3

LM386 Board supports, e.g. 4 X resistors

Hook-up wire as required

Copper clad board (various sizes - see next slide)

Knob for pot Rubber feet (4)

Thin coax, approx 3" for input connection


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COMPONENTS LIST (4)

Copper clad board suggested dimensions

Baseboard 8" X 3.5" (200mm X 85mm)

Front Panel 3" X 2" (78mm X 51mm)

Side supports 2" X 2" (51mm X 51mm) - a single piece of this size cut in two diagonally

LM386 amp. board 2" X 2" (51mm X 51mm)

PCB islands 2 off, approx. 7mm square

PP3 battery holder - or d/sided sticky / zip ties


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