LM4780 Poweramp
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This is a small poweramp using the National Semiconductor LM4780 chip. The board can be configured for stereo, bridged or parallel operation. The board is a complete poweramp and power supply. All you have to add is a power transformer and a heatsink. Depending on the transformer you choose, output powers up to about 75W (stereo) or 140W (mono) are possible. The bridged version is for use with 8 ohm speakers (or higher). The parallel version can be used for 4-6 ohm speakers. The stereo version is for 4-16 ohm speakers. If you have a preamp with a balanced output, you can use the stereo version for bridged operation also. Board size: 100*60mm |
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Schematic (GIF 26kB) |
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