LC (launch complex) simple harmonic oscillating circuit and sinusoidal signal generator thereof

A simple harmonic oscillation and circuit technology, applied in the field of LC simple harmonic oscillation circuit and its sine signal generator, can solve the problems of complex structure of LC oscillator, difficult parameter design and setting, large distortion of output sine wave, etc., and achieves wide practicality. Value, convenient parameter setting, good performance effect

Active Publication Date: 2017-01-04
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The LC oscillator has a wide frequency range and high frequency stability, but the structure of the existing LC oscillator is relatively complex, the frequency stability is not high, the parameter design and tuning are difficult, and the distortion of the output sine wave is large, causing Defects such as long vibration and stabilization time

Method used

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  • LC (launch complex) simple harmonic oscillating circuit and sinusoidal signal generator thereof
  • LC (launch complex) simple harmonic oscillating circuit and sinusoidal signal generator thereof
  • LC (launch complex) simple harmonic oscillating circuit and sinusoidal signal generator thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The basic series-parallel dual-resonance structure LC simple harmonic oscillation circuit such as Figure 6 As shown, the series-parallel double resonance structure LC resonance voltage divider circuit and the amplifier circuit form a closed loop to form an LC simple harmonic oscillation circuit.

[0053] Amplifying circuit consists of operational amplifier A0 and resistor R 01 , R 02 Composition, the voltage magnification is:

[0054] A u = 1 + R 02 R 01 = R 01 + R 02 R 01

[0055] The series-parallel double-resonant structure LC resonant voltage divider circuit consists of an RLC series resonant circuit and a GLC parallel resonant circuit, and the GLC parallel resonant circuit consists of a ...

Embodiment 2

[0077] A typical series-parallel double resonance structure LC simple harmonic oscillation circuit such as Figure 9 As shown, the series-parallel double resonance structure LC resonance voltage divider circuit and the amplifier circuit form a closed loop to form an LC simple harmonic oscillation circuit.

[0078] The series-parallel double-resonant structure LC resonant voltage divider circuit consists of an RLC series resonant circuit and a GLC parallel resonant circuit, and the GLC parallel resonant circuit consists of a conductance G 11 , inductance L 1 , capacitance C 1 It is formed in parallel, and the RLC series resonant circuit is composed of resistor R 12 , inductance L 1 , capacitance C 1 formed in series. The transfer function of the LC resonant voltage divider circuit is:

[0079] F u = 1 ...

Embodiment 3

[0102] Negative temperature coefficient thermistor starts oscillation and stabilizes amplitude series-parallel double resonance structure LC simple harmonic oscillation circuit such as Figure 12 As shown, the series-parallel double resonance structure LC resonance voltage divider circuit and the amplifier circuit form a closed loop to form an LC simple harmonic oscillation circuit.

[0103] when: , the LC resonant voltage divider circuit is in a resonant state, and the voltage division coefficient of the LC resonant voltage divider circuit reaches the maximum value at this time:

[0104] F u 0 = 1 1 + G 1 R 1 = 1 2

[0105] in:

[0106] Amplifying circuit consists of operational amplifier A0 and resistor R 01 , Potentiometer R P0 , NTC thermist...

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PUM

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Abstract

The invention relates to an LC (launch complex) simple harmonic oscillating circuit and a sinusoidal signal generator of the LC simple harmonic oscillating circuit, in particular to the LC simple harmonic oscillating circuit applying an LC resonate bleeder circuit. The invention belongs to an electronic circuit and an oscillating circuit. The LC simple harmonic oscillating circuit is mainly composed of an amplifying circuit and an LC resonate bleeder circuit; the amplifying circuit and the LC resonate bleeder circuit are formed to be a closed loop; an output end of the amplifying circuit or an output end of the LC resonate bleeder circuit is the output end of the LC simple harmonic oscillating circuit. The sinusoidal signal generator is composed of the LC simple harmonic oscillating circuit and a driving circuit; an input end of the driving circuit is connected to the output end of the LC resonate bleeder circuit, and the driving circuit applies the same ratio of amplifying circuit. The simple harmonic oscillating circuit and the sinusoidal signal generator thereof are featured by simple structure, good performance, low cost, and convenient parameter setting, and others; besides, the simple harmonic oscillating circuit and the sinusoidal signal generator thereof have wide practical value.

Description

technical field [0001] The invention relates to an LC simple harmonic oscillating circuit and a sine signal generator thereof, in particular to an LC simple harmonic oscillating circuit using an LC resonant voltage divider circuit and a signal generator for sinusoidal wave output, belonging to electronic circuits and oscillating circuits. Background technique [0002] Sine wave oscillators are widely used in many fields such as measurement, automatic control, radio communication and remote control. In such applications, the oscillation frequency of the oscillator is required to have high accuracy and stability, and a smaller sine wave wave distortion. [0003] Currently commonly used sinusoidal oscillators include RC sinusoidal oscillators, LC sinusoidal oscillators, crystal oscillators, etc. The RC oscillator is relatively simple, but the frequency stability is poor; the crystal oscillator has a high oscillation frequency and a relatively stable oscillation frequency, but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B5/12
CPCH03B5/12H03B5/124H03B5/1256
Inventor 朱明秦佳昕
Owner SHANGHAI UNIV
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