Monolithic crystal control conversion oscillation system based on linear driving

Abstract

The invention discloses a monolithic crystal control conversion oscillation system based on linear driving. The system is characterized by being composed of a signal conversion circuit, a linear driving circuit, a signal amplification circuit, a regenerative feedback circuit, a frequency selecting circuit and a buffer circuit, wherein the linear driving circuit and the signal amplification circuit are both connected with the signal conversion circuit, the regenerative feedback circuit is connected with the signal amplification circuit, the frequency selecting circuit is connected with the regenerative feedback circuit, and the buffer circuit is connected with the frequency selecting circuit; the linear driving circuit is composed of a driving chip U, a triode VT2, a triode VT3, a triode VT4, a triode VT5, a polar capacitor C8, a resistor R15, a polar capacitor C10, a polar capacitor C9 and the like; the positive electrode of the polar capacitor C8 is connected with the signal conversion circuit, and the negative electrode of the polar capacitor C8 is connected with a pin IN1 of the driving chip U after passing through a resistor R14; one end of the resistor R15 is connected with the collector electrode of the triode VT5, and the other end of the resistor R15 is connected with the base electrode of the triode VT3 after passing through a resistor R16; the positive electrode of the polar capacitor C10 is connected with the base electrode of the triode VT5, and the negative electrode of the polar capacitor C10 is connected with the pin IN1 of the driving chip U; the positive electrode of the polar capacitor C9 is connected with a pin IN2 of the driving chip U, and the negative electrode of the polar capacitor C9 is grounded. The linear driving circuit can make the oscillation system maintain high stability even in the operating process within a wide frequency range.

Description

technical field [0001] The invention relates to a system, in particular to a single-chip crystal-controlled conversion oscillation system based on linear drive. Background technique [0002] With the continuous development of electronic technology, oscillators are used more and more widely as electronic components that generate repetitive electronic signals (usually sine waves or square waves). There are many types, which can be divided into self-excited oscillators and other-excited oscillators according to the oscillation excitation method; can be divided into resistance-capacitance oscillators, inductor-capacitor oscillators, crystal oscillators, tuning fork oscillators, etc. according to the circuit structure; according to the output waveform can be divided into Divided into sine wave, square wave, sawtooth wave and other oscillators. At present, it is widely used in electronic industry, medical treatment, scientific research and so on. [0003] However, the applicable...

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Problems solved by technology

[0003] However, the applicable frequency range of the current oscillator system is small, which makes the application range of the oscillator system very limited.

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