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LM386 AF Amplifier Project PowerPoint PPT Presentation

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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

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LM386 AF Amplifier


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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Main Layout Diagram

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LM386 Board layout

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LM386 Board Legend

IN = screened audio input lead connection

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RV110k Log pot

R2 10R


C11 microF electrolytic, 16v

C2100 nF ceramic

C310 microF electrolytic, 16v

C410 microF electrolytic, 16v

C5100 nF polyestermore...........

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Capacitors (contd)

C6100 microF electrolytic, 16v

C71000 microF electrolytic, 16v

C8100nF polyester

Integrated Circuit

LM386 Audio Amplifier chip

Miscellaneous Items

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

Switch: single pole, on-offmore.........

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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 potRubber feet (4)

Thin coax, approx 3" for input connection

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Copper clad board suggested dimensions

Baseboard8" 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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