What Is a Pulse Generator?

A pulse generator is a system used to generate signals and an electrical test signal instrument that generates the required parameters. According to its signal waveform, it is divided into four categories.

A pulse generator is a system used to generate signals and an electrical test signal instrument that generates the required parameters. According to its signal waveform, it is divided into four categories.

Chinese name

Pulse generator

Foreign name

Pulse Generator

Attributes

instrument

Function

Electrical test signal

Classification

Sine function pulse signal random signal

Pulse generator classification

Divided into four categories according to their signal waveforms:

Graphical representation of the pulse generator (6 photos)

Sine signal generator. It is mainly used to measure the frequency characteristics, nonlinear distortion, gain and sensitivity of circuits and systems. According to its different performance and use, it can be further divided into low frequency (20 Hz to 10 MHz) signal generator, high frequency (100 kHz to 300 MHz) signal generator, microwave signal generator, frequency sweep and program-controlled signal generator, Frequency synthesis type signal generator, etc.

Function (waveform) signal generator. It can generate some specific periodic time function waveform signals (sine wave, square wave, triangle wave, sawtooth wave, pulse wave, etc.), and the frequency range can be from several microhertz to tens of megahertz. In addition to communication, instrumentation and automatic control system testing, it is also widely used in other non-electrical measurement fields.

Pulse signal generator. Generators capable of generating rectangular pulses with adjustable width, amplitude, and repetition frequency can be used to test the transient response of linear systems, or used as analog signals to test the performance of radar, multiplex communications, and other pulsed digital systems.

Random signal generator. There are usually two types of noise signal generators and pseudo-random signal generators. The main purpose of the noise signal generator is to introduce a random signal into the system under test to determine the performance of the system in order to simulate the noise in the actual working conditions; add a known noise signal to compare the internal noise of the system to determine the noise coefficient; Instead of sinusoidal or pulse signals to determine the dynamic characteristics of the system. When using noise signals for correlation function measurement, if the average measurement time is not long enough, statistical errors will occur, which can be solved with pseudo-random signals.

Pulse generator use

1. Hydraulic pulse generator The hydraulic pulse generator includes a hydraulic pneumatic accumulator (2) installed on the water inlet pipe (1). This accumulator is connected to the oscillation generator (4) through a first conduit (3). The oscillating generator is connected to the water flow converter (6) through the second conduit (5). The water flow converter includes a working nozzle (7) and a drainage nozzle (8). The second conduit (5) is formed by connecting at least two sections of pipes (9, 10) with different diameters. The diameter of the former section (9) is twice the diameter of the latter section (10).

2.High voltage pulse generator adjustable wide nanosecond combined high voltage pulse generator

The utility model relates to a femtosecond pulse generator, which can be used as a vibration source of an ultrasonic generator. Designed to improve aftermath and adapt to different frequency transducers. It consists of three parts: central control, pulse forming and power supply. The central control part generates S1-Sn positive and negative pulses at the same time. The width, interval and amplitude of each pulse are adjustable. The pulse-forming part performs waveform combination on S1-Sn and outputs it at high voltage. The negative pulse in the combined waveform is used to compensate the ultrasonic residual wave generated by the positive pulse, and the pulse width is adjusted to adapt to different frequency transducers. It has been shown that the penetration and resolution of the ultrasonic source can be significantly improved by experiments.

3.Improvement of gate pulse generator for static variable compensator

The gate pulse generator of a static variable compensator composed of a thyristor switched capacitor includes detecting forward and reverse voltages (Vu, Vx) applied to anti-parallel thyristors (3u, 3x) connected in TSC Voltage detector (5u, 5x). The anti-parallel connection thyristors (3u, 3x) include multiple thyristors (3u) connected in series and thyristors (3x) connected in reverse. The gate pulse generator monitors the forward and reverse voltage (Vu; Vx) and determines whether it is a period (2ms). When the inverting edges (3x) of the thyristors (3u, 3x) connected in parallel are kept on, Whether the period when the positive and negative voltages (Vu, Vx) at the period (t30-t40) is zero continues to the predetermined period (2ms).

4.Data transmission device and pulse generator for vehicles

Abstract: A data transmission device composed of a pulse generator (1) and a control device (20) for a vehicle is proposed. The invention aims to improve such a device so that the signal generated by the sensor (2) is not only transmitted from the pulse generator (1) to the control device (20) by means of a signal wire (9) as in the prior art, but also serves as a monitoring device When requested, it is encoded along the data line (19). For this purpose, the signals generated by the pulse generator (1) are first stored in an intermediate memory. The stored content is encoded before transmission, preferably by a data encoding standard. When arriving at the control device (20), the coded transmission signal is compared with a signal transmitted in a conventional manner and stored here. This comparison shows any operation on the transfer section in a simple manner. The invention also includes a pulse generator suitable for the improved data transmission device.

5.Pulse generator for extraction tower

The utility model discloses a pulse generator for an extraction tower. It has a rotary valve and a rotary valve motor. A pair of liquid suction tanks and a pair of liquid discharge tanks are arranged around the rotary valve. The circulation pump is connected to the liquid suction tank and the liquid discharge tank. The rotary valve motor is above the rotary valve. The advantages of the utility model are: 1) the sealing requirements of the rotary valve are reduced, and it is suitable for processing liquids containing solid materials; 2) the rotary valve motor can be adjusted in speed, and the bypass line of the circulating centrifugal pump is equipped with a bypass to adjust the pulse Frequency and amplitude; 3) Install a jacket in the pipeline of the inlet and outlet circulation pumps, and the jacket is passed with cooling fluid. Prevent the liquid temperature in the circulation line from becoming too high.

6.Multi-output high-voltage nanosecond pulse generator

The multi-output high-voltage nanosecond pulse generator belongs to the electric pulse trigger signal source device, and solves the technical problems of low-steep front edges, low voltage amplitude, and low energy of multi-channel gas discharge laser trigger pulses. Basically, the frequency is up to 3 times the power supply voltage value, and the electric pulse trigger signal with high energy is suitable for triggering: multi-channel gas laser and multiple pulse lasers work synchronously. , Multiple magnetic pulse generators work synchronously, and the inner cycloid bundle device (HCP).

7. Jet pulse generator and massager and method

A massage system having at least one pair of fluid-filled chambers (21, 22) and a jet fluid alternately connecting the at least one pair of fluid-filled chambers (21, 22) to a pressure fluid source (17) Switch (10). The jet switch (10) is a cross-type jet switch having a switching chamber (11). The switching chamber has two side walls (13, 14), and fluid from a fluid source (17) flows from one side wall of the switching chamber. Switch to the other side of the switching chamber and be sensitive to the load on the fluid-filled chamber (21, 22), and have a ventilation channel (19, 20) to connect the fluid-filled chamber (21, 22) to the switch.

8. Supporting pipe structure for electric pulse generator

An integrated pipe support structure for a Marx pulse voltage generator (2) comprising a plurality of generator stages (3) is disclosed. It is known to install a pipe for flushing the air of the switching arrester (4), separated from the support frame of the switching arrester (4), the pulse capacitor (5) and the series-parallel resistors (7, 8). According to the invention, the pipe (2) has a supporting function for the switching arrester (4) and individual or all electrical components (5-10) of the pulse circuit. In one embodiment, the pipeline (2) is composed of a triangular cylindrical support structure (2), wherein the side wall (11) is composed of an insulating plate (11), and each of the insulating plates is installed with one of the electrical components, namely the switch Appliances (4), pulse capacitors (5), and resistors (7, 8). The advantages of the present invention are: reduced structural complexity and cost savings, a more compact design with a smaller pipe cross-sectional area (22) and therefore a smaller self-induction of the pulse circuit; and Modules (14) with at least one arrester stage (3) are easier to produce, transport and handle.

9. A charging pulse generator, an exposure generating device, and a method of outputting a charging pulse

Disclosed is a charging pulse generator used in an exposure generating device in the field of digital photography, which includes a frequency divider and a frequency doubler that receives a reference clock signal, and further includes a pulse control unit and an erasable storage unit. The write storage unit receives an externally-charged charging pulse characteristic value, and the frequency divider, the frequency multiplier, and the pulse control unit perform related operations based on the charging pulse characteristic value received by the rewritable storage unit to generate a required charging pulse. The solution provided by the present invention can be applied to different chargers. When different chargers are used, the conditions of the required pulse can be written in advance according to the requirements of the charger, and then the required charging can be obtained by turning on the charging pulse generator. Pulse, and the parameters of the charging pulse can be changed at any time by programming. The invention also discloses an exposure generating device and a charging pulse output method based on the charging pulse generator.

10.Ultra-wideband narrow pulse generator with sub-nanosecond duration

Sub-nanosecond duration ultra-wideband narrow pulse generator is a kind of "carrier" used to provide communication for short-range and high-speed wireless communication systems, especially a sub-nanosecond duration ultra-wideband narrow pulse generator. The generator is composed of a baseband signal source, a differentiator, a base zero bias amplifier, a filter, and a broadband low-noise amplifier in series. The square wave signal input is generated by the baseband signal source. After setting the amplifier and filter, the broadband low-noise amplifier outputs ultra-wideband narrow pulses with sub-nanosecond duration.

Pulse generator random pulse generator

The decay of radioactive nuclei is random in time. Therefore, the number of nuclei that a radioactive source decays in a unit time is distributed in a Poisson around its average value. The counting rate of the signals received by the nuclear detector is also distributed around the average counting rate in a Poisson distribution. Other random processes, such as the number of reactions that occur when a certain beam bombards a target, and the number of incidents per unit time when a positron-negative electron beam collides follow the same rule ^[1] .

Generally, pulse generators are used to simulate the signals from nuclear detectors when testing the performance of electronic circuits and data acquisition systems. The pulse generator signals are periodic, and the time interval between them is always the same. However, some more complex systems may have different responses to periodic and random pulses, especially when the counting rate is close to the limit of the processing capacity of the system. In order to test the performance of electronic circuits and data acquisition systems under random triggering, it is necessary to use a random pulse signal source in time ^[1] .

Random pulse generators can be divided into two types: analog and digital. The analog random pulse generator is composed of a random noise source plus a discriminator and a shaping circuit. Zener diode is a very "noisy" device, especially where its characteristic curve is curved. A counting rate feedback control threshold can be added to the output to control the output frequency ^[1] .

When testing the differential non-linearity of TDC by code density method, it is necessary to input a time random signal. Sheng Huayi et al. Proposed to use the random noise of the circuit itself to generate a random hit signal ^[1] .

Two kinds of random pulse generators have been developed by digital method. One type uses a microcontroller to give random pulse intervals; the second type uses a pseudo-random code to give random pulses ^[1] .

Pulse generator ultra short pulse generator

For ultra-high-resolution radar, spread-spectrum communication technology, and many other applications that require broadband radiation, the ultra-short pulse generator is very important. To some extent, the ultra-short pulse formation technology has become many broadband applications. Core technologies. At present, many researches on this technology focus on laser diode-driven GaAs optical switches, but these devices cannot work normally at less than 200 ps. At the same time, laser diodes still have problems with repetition rate and reliability. Other methods for generating high-speed transient voltages include GaAs thyristors, but GaAs thyristors will take some time as a mature product ^[2] .

Ultra-short pulse formation has the following characteristics: First, it can generate 100 kW pulses with a pulse width of less than 1 ns. It can be powered by a 1 W DC power supply. Secondly, this solution uses mature and easily available devices on the market ^[2] .

The ultra-short pulse generator will use the diode's transit time avalanche breakdown principle to make the input narrow pulse into an ultra-short pulse signal. Avalanche diodes have received great attention from the beginning. Microwave oscillators and amplifiers can be made with avalanche diodes, which have made great progress in theory and practice. Here, an ultra-short pulse generator will be made using avalanche diodes ^[2] .