Wireless electronic keyboard circuit
Source: InternetPublisher:小胖友 Keywords: electronic keyboard wireless electronics modulation Updated: 2020/03/17
Circuit working principle: VT3, VT3 and peripheral components form a common base capacitor feedback oscillation
circuit , and the oscillation frequency is determined by C8, C9 and L1. VT2 is a voltage amplification stage, and sends the amplified audio signal to VT3 to perform amplitude modulation
on the high-frequency equal-amplitude signal . The modulated
high-frequency signal is emitted by L2.
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