触发式方波产生器，电路原理图，仿真成功，也是实验内容，有兴趣的可以看一下。- 下载
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函数发生器是一种在科研和生产中经常用到的基本波形产生器，集成函数 波形发生器一般都采用ICL8038或5G8038，而它们只能产生300kHz以下的中低频正弦波、矩形波和三角波，且频率与占空比不能单独调节，从而给使用带来很大不便。本文介绍由LM324和稳压管组成的低频函数波形发生器，该电路能够产生正弦波、方波和三角波信号，频率能以10Hz的间隔在20Hz～20KHz范围内调整。-Function Generator is a scientific research and production often use the basic waveform generator, integrated function waveform generator usually used ICL8038 or 5G8038, and they only have a 300kHz following the low-frequency sine wave, square wave and triangular wave, and frequency and duty cycle alone is not regulated, so as to enable using bring a lot of inconvenience. This paper introduces the LM324 voltage regulator tubes, and the low-frequency waveform generator function, the circuit can produce sine, square and triangular wave signal frequencies of 10Hz to 20Hz at intervals within ~ 20KHz adjustment. 下载
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本文简要介绍了集成电路MAX038的性能，并给出了以MAX038波形产生器为核心具有四种输出波形的函数 信号发生器的设计方案。用这种方法设计的信号发生器具有结构简单、成本低、体积小等特点，很好地满足 了一般的实验要求。 关键词：集成电路 信号发生器 频率 Abstract：The performance ofIC_MAX038 was introduced briefly in this paper．At the sa／ne time，a signal generator design making with integrated circuit MAX038 is provided，which can produce four kinds of waveforms output．The signal generator was of characters such as simple structur，cheap expense，small volume and SO on．The signal generator contents the demand of general experiments very wel1． Key words：Integrated circuit Signal generator Frequency-This paper describes the MAX038 IC performance and gives a MAX038 waveform generator for the four core output waveform is a function of the signal generator design . This way the signal generator design is simple, low cost, small size and other characteristics, good to meet the general requirements of the experiment. Keywords : frequency signal generator IC Abstract : The performance was introduced br ofIC_MAX038 iefly in this paper. At the sa / ne time, a signal generator design making with integrat ed circuit MAX038 is provided, which can produce four kinds of waveforms outpu t. The signal generator was of characters such as s imple structur, cheap expense. small volume and SO on. The signal generator contents of the demand gen eral experiments very wel1. Key words : Integrated circuit S 下载
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基于MEGA128的多功能仪器,提供以下9种功能： 1. 2路0-10 VDC 电压表 2. 1路0-30V DC 电压表，带有一个10X跳针，可以测试0-300VDC 3. 0 – 3 安电流表 4. 4 通道逻辑分析仪 5. 频率发生器，50%占空比方波，0－5VDC，1HZ到8MHZ. 6. 波形发生器，正弦波、三角波、方波，1HZ 到 20＋MHZ? 7. 频率计 8. +5 VDC ，200 mA 供电输出 9. -5 VDC ， 300 mA 供电输出 -MEGA128 based on the multifunctional equipment to provide the following nine functions : 1. Two Road 0-10 VDC voltage Table 2. A Road 0-30V DC voltage meter, with a 10X jump needles to test 0-300VDC 3. 0-3 - 4 ammeter. 4-channel logic analyzer 5. Frequency Generator, 50% duty cycle square 0-6 - 5VDC, to 8MHZ 1HZ. 6. waveform generator, sine, triangle wave, square wave, 1HZ MHZ to 20 + 7. Cymometer 8. 5 VDC, 200 9 mA output power. 5 VDC, 300 mA output power 下载
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基于Intel 8253定时器的两端Asm，包括配套电路，流程图 ? 1。设计基于ISA总线的Intel 8253 的接口电路，用Intel 8253 的1个通道作定时器，演奏C调的各个音符，利用查表程序的方法依次演奏，每个音符演奏1s，停0.5s 演奏三遍后退出程序 2。利用Intel 8253的一个通道产生一个100Hz的方波，用示波器测试信号的正确性 ? 以产生的方波作为另一个通道门控信号。利用此通道测量其高电平的宽度，在PC机显示屏上显示其数值并退出程序 -based on the Intel 8253 timer at both ends of programmers, including matching circuit, flowchart 下载
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强！自制电容表的源程序和PCB图,很多贴片电容都没有标明电容值，而我又舍不得扔了它们；自己做电路玩时，经常看到一些废电路板上有很多贴片电容，可以拆下来用，但是却看不到容量，很郁闷。所以我决定做一个电容表来测试它们的容量。 我用单片机8952和电压比较器339做了一个简单的电容容量测量表，参数大致如下： 电容测量范围为1pF-9999.99uF，最小分辨力为1pF。分为5个量程，可以自动切换量程，也可手动切换。 另外，有简单的频率计功能，能测量0-60MHz的数字信号频率（TTL电平）；还可以产生几个单点频率的方波信号（比如1KHz）。-strong! Table homemade capacitance of the source and PCB plans, many chip capacitors are not marked with capacitance values, and I could not bear to throw them; Circuit done playing, I always see some circuit board waste a lot of chip capacitors, used to be removed, but I fail to see the capacity, very depressed. So I decided to make a capacitance meter to test their capacity. I used SCM 8952 and voltage comparator 339 to do a simple capacitance measurement table, along the following parameters : capacitance measurement range to max-9999.99uF, minimum resolution of the disturbance. Divided into five range, it will automatically switch range can also manually switch. In addition, a simple function of frequency meter, capable of measuring 0-60MHz digital signal frequency (TTL level); Some ca 下载
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