High gain power amplifier IC-Fool 1006

transparency. The closed-loop gain of the little fool reaches 45dB, which is
about 15dB higher than that of ordinary power amplifier circuits. That is, the amplification power is 5 to 6 times that of ordinary power amplifier IC. For example,
when y+-13.8V, speaker anode resistance RL - 4cl, distortion THD = 10%
, input U~n - 30mV sine wave signal, the load can obtain 6W sine
power output, and when the input terminal is short-circuited Noise output is less than 0t 2mV. Therefore
, for weak pre- signal sources such as microphone amplifier output stages and
tiny recording and playback signals below ten millivolts, the Little Fool can provide satisfactory amplification. In order to
minimize the crossover distortion of the power circuit when amplifying small and weak signals, the little fool adopts the A-B and Lou sliding operating point offset.
When the signal is small, the bias is in Category A-B, and when the signal is large, the operating point will automatically slide to Category-B. , so it has good work efficiency under dynamic conditions.
    The 6W power amplifier movement composed of small fools (two small fool circuits are used for dual channels). Because of its small size, it can be directly fixed inside the
bookshelf speaker . Connect the positive and negative 12V DC power supplies and fix the 5kfl volume potentiometer. In a place where the speakers are easy to adjust
(signal cables must use shielded wires), connect the speaker and signal source to turn on the listening port.