Multi-functional fountain bonsai operation principle circuit

Published:2011/3/27 23:03:00 Author:Joan | Keyword: Multi-functional fountain bonsai , operation principle | From:SeekIC

It is a high-power and high-frequency oscillator using capacitive three-point oscillating circuit. The circuit oscillation frequency is piezoelectric transducer TD’s natural frequency 1.3MHz. L1 and C1 form a resonant circuit which does not determine the oscillation frequency here, but decided the oscillation amplitude. Its resonant frequency is 0.6MHz lower than the circuit's oscillation frequency. L2 and C2 oscillation frequency is greater than the circuit resonant frequency. The reason for using two resonant circuits, is to make the oscillation frequency of the circuit is more pure. To make the work of the oscillator is stable in the high-power, it uses two transistors to parallel work. R1, R2 are bias resistors. R1 is adjusted to make the oscillator output moderate. R3, R4 are used to balance the two transistors.



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