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Ref: Silicon Chip March 1994
This 50 watt unit uses a single chip module and provides 50 watts RMS into 8 ohms with very low distortion and extreme quietness.
- PC Board size only 84 x 58mm.
Kit is supplied in short form version.
PC Board and electronic components only supplied.
Heatsink Optional
Power supply not included.
Power Requirements:
+/-35VDC rails @ 80VA per module
MT2114 25 + 25V 160VA toroid x 1
ZR1314 Bridge rectifier x 1
RE6241 2,200/50V electro caps x 2
Note: The LM3876 used in this design has been changed to severely limit its power output into 4 Ohm loads. If you want to use a 4 Ohm load, the solution is to use the LM3886 which can deliver over 60W. However the supply rails should be reduced to +/- 28V, as recommended in the article for the LM3876 when using 4 Ohms loads.
This 50 watt unit uses a single chip module and provides 50 watts RMS into 8 ohms with very low distortion and extreme quietness.
- PC Board size only 84 x 58mm.
Kit is supplied in short form version.
PC Board and electronic components only supplied.
Heatsink Optional
Power supply not included.
Power Requirements:
+/-35VDC rails @ 80VA per module
MT2114 25 + 25V 160VA toroid x 1
ZR1314 Bridge rectifier x 1
RE6241 2,200/50V electro caps x 2
Note: The LM3876 used in this design has been changed to severely limit its power output into 4 Ohm loads. If you want to use a 4 Ohm load, the solution is to use the LM3886 which can deliver over 60W. However the supply rails should be reduced to +/- 28V, as recommended in the article for the LM3876 when using 4 Ohms loads.
Assembly required
| Kit Form | Short Form (circuit only) |
| Difficulty | Simple |
| Application Field | Amplifier Module |
| PCB Width | 58mm |
| PCB Length | 84mm |
| Estimated Construction Time | 45min |
| Tools required | Soldering Iron |
| Audio Device | Amplifier |
| Signal Input Level | 1mV |
| Output power | 50W |
| Audio distortion | 0.002 |
| Signal to noise ratio | -114 |
| Audio power supply | 37.5VDC |
Warranty: 3 Months
