Enclosure not stated · 1 knob
Tiny Giant AmpVerified
Based on the Tiny Giant Amp
From the post
Requested by a few people on the forum, this is a mini amp circuit by Taylor Livingston with a bit more ooomph than the others on here, giving 20 watts into a 4 ohm speaker, or 12 watts into an 8 ohm.
Designed to run off a laptop power supply which I'm sure we all have hanging around the house from old broken laptops, with a LM338T taking that down to a regulated 11.6V to supply the opamp and amplifier. The pins of the TDA7240A will need offsetting slightly so it is suitable for vero, but it can be done easily enough, as checked by Lazy Swamis on the forum.
Details of the project can be found here, and there is plenty of discussion to read through if you want to at diystompboxes.
Short clip of the amp in use
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 17 rows
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Check before you build · 1 value the reader of this layout was not sure of
- Standby switch: type not stated in the drawing, SPST assumed from the two wires
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 6 | ||||
| ×2 | 2R2 | 2.2 | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 120R | 120 | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| Capacitors 6 | ||||
| ×3 | 100n | 100n | read from the layout by eye | |
| ×2 | 220n | 220n | read from the layout by eye | |
| ×2 | 1u | 1u | read from the layout by eye | |
| ×2 | 22u | 22u | electrolytic; read from the layout by eye | |
| ×1 | 470u | 470u | electrolytic; read from the layout by eye | |
| ×1 | 10u | 10u | electrolytic; read from the layout by eye | |
| ICs 3 | ||||
| IC1 | TL072 | TL072 | read from the layout by eye | |
| ×1 | LM338T | LM338T | regulator; read from the layout by eye | |
| ×1 | TDA7240A | TDA7240A | amplifier; read from the layout by eye | |
| Potentiometers 1 | ||||
| Volume | A10K | A10k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Standby | SPST | SPST | type not stated; two wires; read from the layout by eye | |