lm386_amplifier
Differences
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| Both sides previous revisionPrevious revision | |||
| lm386_amplifier [2017/12/02 19:05] – sdh7 | lm386_amplifier [2017/12/02 20:05] (current) – sdh7 | ||
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| * External connection pins | * External connection pins | ||
| * A+/A- (audio input?) | * A+/A- (audio input?) | ||
| - | * +/- (power) | + | * +/- (power) (if using a 9V clip, just solder the clip directly instead of pins, but you'll want to hot glue some strain relief because it **will** fail eventually, otherwise) |
| * S+/S- (speaker) | * S+/S- (speaker) | ||
| * Cut the pairs of pins off of the 6-pin strip | * Cut the pairs of pins off of the 6-pin strip | ||
| Line 37: | Line 37: | ||
| * Cut off the anti-rotation tab | * Cut off the anti-rotation tab | ||
| * Solder one pin, adjust, solder the other two. | * Solder one pin, adjust, solder the other two. | ||
| - | | + | |
| + | * Use two headered wires. cut off headers at one end, and strip the remainder | ||
| + | * Solder stripped wires to tabs on speaker | ||
| + | * Insert header pins into S+ & S- | ||
| + | |||
| + | Options/ | ||
| + | * External speaker (i.e. a cabinet or something) | ||
| + | * Wire up header wires to a 1/4" jack instead of the speaker | ||
| + | * Additional gain | ||
| + | * Simple way: wire up a capacitor between pins 1 & 8 of the LM386 | ||
| + | * adjustable way: wire up a 5k potentiometer between pins 1 & 8 | ||
| + | * Power switch | ||
| + | * Wire up SPST switch between power source and + on PCB | ||
lm386_amplifier.1512241508.txt.gz · Last modified: 2017/12/02 19:05 by sdh7