Signal generator supporting multi-waveform output

Abstract

The utility model discloses a signal generator supporting multi-waveform output. The signal generator comprises a hysteresis comparator circuit, an anti-phase integrator circuit and a sine wave generator circuit. Wherein the output end of the hysteresis comparator circuit is connected to the input end of the anti-phase integrator circuit, and the output end of the anti-phase integrator circuit is connected to the input end of the sine wave generator circuit; wherein a square wave output end XS1 is led out from the output end of the hysteresis comparator circuit; a triangular wave output end XS2 is led out from the output end of the anti-phase integrator circuit; and a sine wave output end XS3 is led out from the output end of the sine wave generator circuit. The utility model has the advantages that the multi-waveform signal output is supported, the cost is low, the structure is simple, and the realization is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to power electronics technical field, especially a signal generator of supporting multi -waveform output. BACKGROUND

[0002] With the development of computer technology, the method of electronic circuit analysis and design has also undergone major changes, and in the technical field of communication engineering, automatic control, measuring instrument, instrument, etc., various signal waveform generators are often needed. Signal generator has very wide use in production practice and scientific research field, and signal source is needed in project development, production, testing and maintenance to analyze and determine their performance and parameters. Commonly needed waveforms include square wave, sine wave, sawtooth wave and triangular wave. The common waveform signal generator of prior art is to generate a waveform, such as patent application number 202011571519.7, a square wave pulse generator and a method for generating square wave pulse, which can output square wave signals with different frequency and duty cycle, but the prior art is generally not only one kind of signal, but also a variety of signals superimposed, and only one kind of waveform signal cannot meet the requirements.

[0003] The prior art scheme generally uses multiple signal generator devices in combination, resulting in the need to purchase multiple devices or select professional signal generator devices. Regardless of which way, the cost is very high, and in many waveform signal use scenarios, the requirement for waveform accuracy is not high, but the cost is higher, and the prior art does not meet the cost of the signal generator supporting multi -waveform output. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the defects of prior art, providing a signal generator of supporting multi -waveform output, realizing supporting multi -waveform signal output, low cost, simple structure and convenient realization.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the technical scheme: a signal generator of supporting multi -waveform output, including hysteresis comparator circuit, inverter integrator circuit and sine wave generator circuit;The output end of hysteresis comparator circuit is connected to the input end of inverter integrator circuit, and the output end of inverter integrator circuit is connected to the input end of sine wave generator circuit;The output end of hysteresis comparator circuit leads square wave output end XS1;The output end of inverter integrator circuit leads triangular wave output end XS2;The output end of sine wave generator circuit leads sine wave output end XS3.

[0006] The hysteresis comparator circuit comprises a hysteresis comparator N1B; wherein the non-inverting input terminal of the hysteresis comparator N1B is connected to the output terminal of the inverting integrator circuit through a resistor R1; the inverting input terminal of the hysteresis comparator N1B is grounded through a resistor R3; the output terminal of the hysteresis comparator N1B leads to a square wave output terminal XS1; the output terminal of the hysteresis comparator N1B is connected to its non-inverting input terminal through a capacitor C1; the capacitor C1 is provided with a resistor R2 in parallel across the capacitor C1.

[0007] The inverting integrator circuit comprises an inverting integrator N2B; wherein the square wave signal output from the output terminal of the hysteresis comparator circuit is sent to the inverting input terminal of the inverting integrator N2B through a resistor R4; the inverting input terminal of the inverting integrator N2B is connected to its output terminal through a capacitor C2; the non-inverting input terminal of the inverting integrator N2B is grounded through a resistor R5; the output terminal of the inverting integrator N2B is connected to the non-inverting input terminal of the hysteresis comparator circuit; a triangular wave output terminal XS2 is led out at the output terminal of the inverting integrator N2B.

[0008] The sine wave generator circuit comprises a low-pass filter circuit and an amplification circuit; wherein the triangular wave signal output from the inverting integrator circuit is output as a sine wave signal after passing through the low-pass filter circuit and the amplification circuit.

[0009] The low-pass filter circuit is a two-stage low-pass filter.

[0010] The low-pass filter circuit comprises resistors R6 and R7 and capacitors C3 and C4; the output terminal of the inverting integrator circuit is connected to the input terminal of the amplification circuit through the resistors R6 and R7 connected in series; a terminal led out between the resistor R6 and the resistor R7 is grounded through the capacitor C3; a terminal led out between the terminal R7 and the amplification circuit is grounded through the capacitor C4.

[0011] The amplification circuit comprises an operational amplifier N3B, the output terminal of the operational amplifier N3B is connected to its inverting input terminal through a resistor R9, and its inverting input terminal is grounded through a resistor R8; the non-inverting input terminal of the operational amplifier N3B is connected to the output terminal of the low-pass filter circuit; a terminal sine wave output terminal XS3 is led out at the output terminal of the operational amplifier N3B.

[0012] The signal generator further comprises a power conversion chip G1 for converting alternating current into direct current to obtain a power positive VCC and a power negative VEE, so as to power the hysteresis comparator circuit, the inverting integrator circuit and the sine wave generator circuit.

[0013] The advantages of this invention are: it supports multi-waveform signal output while being low-cost, simple in structure, and easy to implement. Square waves, triangle waves, and sine waves can be output with very few circuit components; the circuit is simple and inexpensive. The signal generator circuit is simple and practical. Because the circuit is powered by a single 220V AC power supply, the device size is greatly reduced, the complexity of the circuit design is lowered, and the reliability of the system is improved. Attached Figure Description

[0014] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0015] Figure 1 This is the circuit diagram of the signal generator of this utility model;

[0016] Figure 2 This is a schematic diagram of the product interface of the signal generator of this utility model;

[0017] Figure 3 This is a waveform diagram of the output of the signal generator of the present invention. Detailed Implementation

[0018] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0019] The signal generator circuit provided in this embodiment supports three waveform signal outputs, such as... Figure 1 As shown, the circuit includes a hysteresis comparator circuit, an inverting integrator circuit, and a sine wave generator circuit. The output of the hysteresis comparator circuit is connected to the input of the inverting integrator circuit, and the output of the inverting integrator circuit is connected to the input of the sine wave generator circuit. The output of the hysteresis comparator circuit outputs a square wave (XS1); the output of the inverting integrator circuit outputs a triangular wave (XS2); and the output of the sine wave generator circuit outputs a sine wave (XS3). Figure 2 As shown, the signal generator device can be equipped with three corresponding output ports to achieve the corresponding output of triangular wave, square wave, and sine wave.

[0020] like Figure 1 As shown, the hysteresis comparator circuit includes a hysteresis comparator N1B; the non-inverting input of the hysteresis comparator N1B is connected to the output of the inverting integrator circuit via resistor R1; the inverting input of the hysteresis comparator N1B is grounded via resistor R3; the output of the hysteresis comparator N1B leads to a square wave output terminal XS1; the output of the hysteresis comparator N1B is connected to its non-inverting input via capacitor C1; a resistor R2 is connected in parallel across capacitor C1.

[0021] The inverting integrator circuit comprises an inverting integrator N2B; wherein the square wave signal outputted from the output end of the hysteresis comparator circuit is sent to the inverting input end of the inverting integrator N2B through the resistor R4; the inverting input end of the inverting integrator N2B is connected to its output end through the capacitor C2; the non-inverting input end of the inverting integrator N2B is grounded through the resistor R5; the output end of the inverting integrator N2B is connected to the non-inverting input end of the hysteresis comparator circuit; the triangular wave output end XS2 is led out from the output end of the inverting integrator N2B.

[0022] The sine wave generator circuit comprises a low-pass filter circuit and an amplification circuit; wherein the triangular wave signal outputted from the inverting integrator circuit is outputted as a sine wave signal after passing through the low-pass filter circuit and the amplification circuit. The low-pass filter circuit is a two-stage low-pass filter. The low-pass filter circuit comprises resistors R6 and R7 and capacitors C3 and C4; the output end of the inverting integrator circuit is connected to the input end of the amplification circuit through the resistors R6 and R7 connected in series; the terminal between the resistor R6 and the resistor R7 is grounded through the capacitor C3; the terminal between the terminal R7 and the amplification circuit is grounded through the capacitor C4.

[0023] The amplification circuit comprises an operational amplifier N3B, the output end of the operational amplifier N3B is connected to its inverting input end through the resistor R9, and its inverting input end is grounded through the resistor R8; the non-inverting input end of the operational amplifier N3B is connected to the output end of the low-pass filter circuit; the terminal of the sine wave output end XS3 is led out from the output end of the operational amplifier N3B.

[0024] The signal generator adopts direct current power supply, and is respectively provided with a power positive VCC and a power negative VEE; and adopts alternating current conversion power supply, wherein the power conversion chip G1 is used to convert alternating current into direct current to obtain the power positive VCC and the power negative VEE, so as to supply power for the hysteresis comparator circuit, the inverting integrator circuit and the sine wave generator circuit. The G1 chip is an alternating current to direct current chip.

[0025] The low-cost simple signal generator provided in the embodiment is simple and reliable, can output three waveforms of square wave, triangular wave and sine wave, and is powered by an alternating current 220V power supply. The signal generator has small volume, simple circuit, easy realization, stable and reliable performance.

[0026] Simple signal generator. It is composed of 220V AC power supply circuit, hysteresis comparison circuit, integrator, low pass filter circuit, amplifier circuit. It is simple and reliable, and it can output square wave, triangular wave and sine wave. The circuit is composed of hysteresis comparator and integrated operational amplifier of positive phase input, integral circuit, square wave and triangular wave generator; two low pass filter and integrated operational amplifier constitute the sine wave generator. N1B constitutes the hysteresis comparator, and the potential of the same phase terminal is determined by VOUT1 and VOUT2. When the potential of the same phase terminal is greater than 0, N1B outputs positive level; when the potential of the same phase terminal is less than 0, N1B outputs negative level. N2B constitutes the inverting integrator, and when the output of VOUT1 is negative, VOUT2 changes to positive direction, and when the output of VOUT1 is positive, VOUT2 changes to negative direction. VOUT2 outputs triangular wave, which is amplified by two-stage low pass filter and N3B operational amplifier to output sine wave VOUT3. The simple signal generator circuit is simple and practical. Since the circuit uses a set of 220V AC power supply, the size of the device is greatly reduced, the complexity of circuit design is reduced, and the reliability of the system is improved.

[0027] As shown in Figure 1 the utility model discloses a simple signal generator circuit diagram, wherein, 220V AC input is outputted positive power supply VCC and negative power supply VEE after G1 and supplies the positive and negative power supply pin of operational amplifier N1B, N2B, N3B respectively, the 6 foot of N1B is connected with the 1 foot of R3, and the 2 foot of R3 is grounded, the 5 foot of N1B is connected with the 1 foot of R1, the 1 foot of R2 and the 1 foot of C1 respectively, the 2 foot of R1 is connected to the 7 foot of N2B, and the 2 foot of C1 is connected to the 7 foot of N1B VOUT1 after being connected with the 2 foot of R2 in parallel, and is outputted to the core of XS1 simultaneously, and the skin of XS1 is grounded, the 7 foot of N1B is connected to the 6 foot of N2B after being connected with R4 in series, the 6 foot of N2B is connected to the 1 foot of C2, and the 2 foot of C2 is connected to the 7 foot of N2B VOUT2, and is outputted to the core of XS2 simultaneously, and the skin of XS2 is grounded, the 1 foot of R5 is connected to the 5 foot of N2B, and the 2 foot of R5 is grounded, the 7 foot of N2B VOUT2 is connected to the 1 foot of R6, the 2 foot of R6 is connected to the 1 foot of R7 and the 1 foot of C3, the 2 foot of R7 is connected to the 5 foot of N3B and the 1 foot of C4, and the 2 foot of C3 and C4 is grounded, the 6 foot of N3B is connected to the 1 foot of R8, and the 2 foot of R8 is grounded, the 6 foot of N3B is connected to the 1 foot of R9, and the 2 foot of R9 is connected to the 7 foot of N3B VOUT3 simultaneously, and is outputted to the core of XS3, and the skin of XS3 is grounded, and the simple signal generator circuit is simple and practical, and the circuit is simple, the device size is small, the cost is low, and the working performance is reliable. When using, only need to connect 220V AC power supply, and can be connected with corresponding waveform output interface according to the need.

[0028] Obviously, the specific implementation of the present application is not limited to the above-mentioned manner, and various non-essential improvements using the method concept and technical scheme of the present application are within the protection scope of the present application.

Claims

1. A signal generator supporting multi- waveform output, characterized by: The signal generator comprises a hysteresis comparator circuit, an inverting integrator circuit and a sine wave generator circuit; wherein the output end of the hysteresis comparator circuit is connected to the input end of the inverting integrator circuit, the output end of the inverting integrator circuit is connected to the input end of the sine wave generator circuit; wherein the output end of the hysteresis comparator circuit leads to a square wave output end XS1; the output end of the inverting integrator circuit leads to a triangular wave output end XS2; the output end of the sine wave generator circuit leads to a sine wave output end XS3.

2. A signal generator supporting multi-waveform output according to claim 1, characterized by: The hysteresis comparator circuit comprises a hysteresis comparator N1B; wherein the non-inverting input end of the hysteresis comparator N1B is connected to the output end of the inverting integrator circuit through a resistor R1; the inverting input end of the hysteresis comparator N1B is grounded through a resistor R3; the output end of the hysteresis comparator N1B leads to a square wave output end XS1; the output end of the hysteresis comparator N1B is connected to its non-inverting input end through a capacitor C1; the capacitor C1 has a resistor R2 connected in parallel across the two ends thereof.

3. A signal generator supporting multi-waveform output according to claim 1 or 2, characterized in that: The inverting integrator circuit comprises an inverting integrator N2B; wherein the square wave signal outputted from the output end of the hysteresis comparator circuit is sent to the inverting input end of the inverting integrator N2B through a resistor R4; the inverting input end of the inverting integrator N2B is connected to its output end through a capacitor C2; the non-inverting input end of the inverting integrator N2B is grounded through a resistor R5; the output end of the inverting integrator N2B is connected to the non-inverting input end of the hysteresis comparator circuit; a triangular wave output end XS2 is led out at the output end of the inverting integrator N2B.

4. A signal generator supporting multi-waveform output according to claim 1 or 2, characterized by: The sine wave generator circuit comprises a low-pass filter circuit and an amplification circuit; wherein the triangular wave signal outputted from the inverting integrator circuit is outputted as a sine wave signal after passing through the low-pass filter circuit and the amplification circuit.

5. A signal generator supporting multi-waveform output as claimed in claim 4, characterized in that: The low-pass filter circuit is a two-stage low-pass filter.

6. A signal generator supporting multi-waveform output as claimed in claim 4, characterized in that: The low-pass filter circuit comprises resistors R6, R7 and capacitors C3, C4; the output end of the inverting integrator circuit is connected to the input end of the amplification circuit through the resistors R6, R7 connected in series; a terminal between the resistor R6 and the resistor R7 is connected to ground through the capacitor C3; a terminal between the terminal R7 and the amplification circuit is connected to ground through the capacitor C4.

7. A signal generator supporting multi-waveform output as claimed in claim 4, characterized in that: The amplification circuit comprises an operational amplifier N3B, the output end of the operational amplifier N3B is connected to its inverting input end through a resistor R9, the inverting input end is grounded through a resistor R8; the non-inverting input end of the operational amplifier N3B is connected to the output end of the low-pass filter circuit; a terminal sine wave output end XS3 is led out at the output end of the operational amplifier N3B.

8. A signal generator supporting multi-waveform output as claimed in claim 1 or 2, characterized in that: The signal generator further comprises a power conversion chip G1 for converting alternating current into direct current to obtain a power positive VCC and a power negative VEE, so as to supply power to the hysteresis comparator circuit, the inverting integrator circuit and the sine wave generator circuit.

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