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点击图片查看原图一、概述
本仪器采用单片机波形合成发生器产生高精度，低失真的正弦波电压，可用于校验频率继电器，同步继电器等，也可作为低频变频电源使用。
本仪器具有读数直观，**，性能稳定，操作方便等特点。关键器件采用进口元件，是一种有着较高性能价格比的试验仪器。
二、基本原理
工频信号发生器，主要由数字波形发生部分、功率放大部分、以及中央控制单元等组成。通过前面板控制数字波形发生单元产生一个频率及幅度非常稳定的数字合成的正弦波，然后送到功率放大器进行放大。**经过输出切换及短路保护后输出。中央控制单元则负责测量输出频率及输出幅度，并监视整个系统的工作状态是否正常。
三、技术指标
项目 | 技术指标及参数 | 备注 |
频率输出范围 | 1Hz ~ 100Hz | 正弦波 |
波形失真度 | 0.5% |
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电压输出范围 | 0 ~ 450V |
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额定输出功率 | 50VA |
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电压测量准确度 | ±1%±2个字 | 满量程 |
频率测量准确度 | ±0.02%±2个字 |
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电源 | 220V±10% |
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工作环境 | 环境温度:0°～40° 相对湿度:≤80% |
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One. Overview
This instrument uses single-chip waveform synthesis generator produces high-precision, low distortion sine wave voltage, can be used to calibrate frequencyrelays,synchronous relays, etc., can also be used as low-frequency inverter power supply.
This instrument has a reading intuitive, accurate, stable performance, easy to operate and so on. Key components of the use of imported components, is a high performanceandlow cost of the test equipment.
Two. Basic principles
NAGP Frequency signal generator, mainly consists of digital waveform generation part, power amplifier part, and the central control unit and so on. Through the frontpanelcontrol digital waveform generation unit produces a very stable frequency and amplitude of the digital synthesis of sine wave, and then sent to the power amplifier for amplification. Finally,afterthe output switching and short circuit protection output. The central control unit is responsible for measuring the output frequency and output amplitude, and monitor the work of the entiresystemstate is normal.
Three. Technical indicators
Items | Technical indicators and parameters | Remarks |
Frequency output range | 1Hz ~ 100Hz | Sine wave |
Waveform distortion | 0.5% |
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Voltage output range | 0 ~ 450V |
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Rated output power | 50VA |
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Accuracy of voltage measurement | ±1%±2个字 | Full range |
Accuracy of Frequency measurement | ±0.02%±2个字 |
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Supply power | 220V±10% |
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Working environment | Ambient temperature: 0 °~ 40° Relative humidity: ≤80% |
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