The LM3886 BTL amplifier

  
Inside:
Other Circuits
Figure 2-60 is LM3886 amplifier roar practical circuit, the circuit with one NE5532 as preamplifier, output power up to 200Wo. LM3886 power amplifier for use, due to the large

output power, must have adequate power supply in order to obtain high-quality output. When the two-channel, power transformer capacity should be 300 ~ 400 f ~, dual secondary windings each 28Vo rectifier bridge should 15A, crossing the filter capacitor only to large capacity, and should be of good quality. Since the output power, equipped with a heat sink should have sufficient cooling area, and reduce the use of thermal grease resistance o-made printed circuit board should pay attention to the input and output isolation of the circuit. Signal input line should be short, to prevent self-excited, input capacitance C can eliminate high-frequency self-excited.




Leave Comment

characters left:

New Circuits

.