electronic bird circuit
Source: InternetPublisher:兰博 Updated: 2020/04/26
Circuit working principle: VT1 and VT2 form a finger-touch switch with high sensitivity,
which controls the direct-coupled complementary multivibrator composed of VT3, VT4, etc. The positive feedback signal is provided by R2
and C2. L and C1 play an intermittent control role in the oscillation circuit .
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