Description: 电子设计大赛论文
A题 音频信号分析仪
B题 无线识别装置
C题 数字储存示波器
D题 程控滤波器
E题 开关稳压电源
F题 电动跷跷板设计
G 信号发生器
-Electronic Design Contest papers audio signal analyzer A Question Question wireless identification device B C D Question title digital storage oscilloscope programmable filter problem switching power supply E F G theme designed electric signal generator and so on seesaw Platform: |
Size: 9284608 |
Author:zoujiaji |
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Description: The paper deals with the control methods of the active power ¯ lter with voltage
source which can be used for reduction of high harmonics in the supply current. For the correct
function of the ¯ lter, it is necessary to determine magnitude of the currents, which have to be
added to load current so as to eliminate high harmonics in the supply current. Several methods
of the ¯ lter current control are described. Theoretical assumptions are con¯ rmed by practical
test on laboratory model of the active power ¯ lter which is controlled by modern digital signal
processor. Platform: |
Size: 536576 |
Author:yasser |
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Description: 太阳能手机充电器，电池，单片机，智能，BUCK变换器
经过DC/DC变换电路处理后，由充电电路为负载供电。锂电池一般不宜采用全过程恒流充电方式，而是采取开始恒流快速充电，待电池电压上升到设定值时，自动转入恒压充电的方式，并且这样有利于保存电池容量。充电过程中采用LED灯、数码管指示，系统中设计有完备的过流过压保护，避免因电池过度充电而损坏，并且充电器采用模块式结构和USB接口，可对手机、MP3、摄像机等多种数码产品充电。-Solar cell phone chargers, batteries, microcontroller, intelligence, BUCK converter
After DC/DC transform circuit, by charging circuit after treatment for load power supply. Lithium battery should not be commonly use process constant-current charging ways, but take began constant-current fast charging for battery voltage, rose to set value, be transferred to the constant pressure charging ways, and this helps to preserve battery capacity. Charging process using LED lamp, digital tube instructions, system design of a complete flows, avoid the battery voltage protection to damage, and excessive rechargeable battery charger a modular structure and USB interface, but for mobile phones, MP3, video cameras and so on many kinds of digital products charging. Platform: |
Size: 199680 |
Author:han |
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Description: U1的 P0 口和 P2 口的部份引脚构成了 6位 LED数码
管驱动电路，数码管采用共阳型，使用 PNP 型三极管作为片选端的驱动，所有三极管的发
射极连在一起，接到正电源端，它们的基极则分别连到 P2.0…P2.5，当P2.0…P2.5 中某引脚
输是低电平时，三极管导通，给相应的数码管供电，该位数码管点亮哪些笔段，则取决于笔
段引脚是高或低电平。-The P0 and P2 U1 port pin form part of the mouth 6 LED digital tube driver circuit, digital control with a total of positive type, use the PNP-type transistor as the driver chip select terminal, all the transistor emitter together, received positive supply-side, they were connected to the base P2.0 ... P2.5, P2.0 ... P2.5 when a pin in the output is low, the transistor turns on, to the corresponding digital control power supply, The digital tube lights which strokes will depend strokes pin is high or low. Platform: |
Size: 1024 |
Author:chenhongge |
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Description: 恒通公司CKNU报警主机网络服务器(以下简称CKNU)是恒通数码有限公司自行开发的与现有C&K23XX或IR报警主机连接的网络控制服务器。CKNU体积小,可去掉外壳直接安装在C&K报警主机里面或另装其他控制箱里。CKNU由C&K主机供电,通过网线与Internet网络连接,将C&K报警事件通过网络方式实时对外传输,大大提高接警速度,模块同时允许用户远程连接，对C&K主机进行如布防、撤防、旁路等远程控制。
CKNU还可以用于串口的网络延伸，改造原有串口设备管理；C&K工作端口为4001，透明串口的工作端口即为4002。
-Hengtong CKNU alarm host network server (hereinafter referred to as CKNU) is a self-developed Hengtong Digital Co., Ltd. with the existing C & K23XX or IR alarm main control server connected to the network. CKNU small size, can remove the shell directly installed in the C & K alarm host inside the box or another other control equipment. CKNU by the C & K host power supply, through the network cable and Internet network connection, the C & K alarm event through the network in real time of foreign transfers, greatly improving the alarm rate, the module also allows users to connect remotely, on the C & K hosts such as arm, disarm, bypass, etc. remote control. CKNU network can also be used for serial port extension of the existing serial device management reform C & K working port is 4001, the work of a transparent serial port is the 4002. Platform: |
Size: 5096448 |
Author:柳益君 |
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Description: 以AT89S51芯片为核心，辅以必要的电路，设计了一个简易的电子时钟，它由4.5V直流电源供电，通过数码管能够准确显示时间，调整时间，从而到达学习、设计、开发软、硬件的能力。-The AT89S51 chip as the core, supplemented by the necessary circuitry to design a simple electronic clock, which consists of 4.5V DC power supply, by digital control can accurately display the time, adjustment time, so get to learn, design, development software and hardware ability. Platform: |
Size: 75776 |
Author:大海 |
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Description: DS18B20是DALLAS公司生产的一线式数字温度传感器，具有3引脚TO－92小体积封装形式；温度测量范围为－55℃～＋125℃,可编程为9位～12位A/D转换精度，测温分辨率可达0.0625℃，被测温度用符号扩展的16位数字量方式串行输出，支持3V～5.5V的电压范围，使系统设计更灵活、方便；其工作电源既可在远端引入，也可采用寄生电源方式产生-DALLAS DS18B20 is produced by first-line digital temperature sensor, a 3-pin TO-92 small-size package temperature measurement range is-55 ℃ ~+125 ℃, programmed for the 9 ~ 12-bit A/D conversion precision, the measured Temperature resolution up to 0.0625 ℃, the measured temperature of 16-bit with sign extension mode digital serial output, 3V ~ 5.5V voltage range, making the system design more flexible and convenient its work in the remote power supply can introduce , may also have parasitic power mode Platform: |
Size: 56320 |
Author:kyky |
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Description: 基于msp430单片机的脉宽调制pwm控制的数控直流电源函数，经过149及169验证的-Msp430 microcontroller based pwm pulse width modulation control of digital DC power supply function, 149 and 169 after verification of Platform: |
Size: 1024 |
Author:刘锐 |
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Description: 基于msp430单片机的脉宽调制pwm控制的数控直流电 源函数，经过149及169验证的-Msp430 microcontroller based pwm pulse width modulation control of digital DC power supply function, 149 and 169 after verification of Platform: |
Size: 1024 |
Author:刘锐 |
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Description: 数控直流稳压电源完整论文输出电压范围0-30v，步进值为0.1V
电压调整率Sv<0.05 V；
电流调整率Si<0.03 A；
纹波电压〈峰峰值<=5mA；
具有过流保护和短路保护功能；用数字显示输出电压
-NC DC regulated power supply output voltage range of the full paper 0-30v, is stepping 0.1V voltage regulation Sv < 0.05 V current regulation Si < 0.03 A ripple voltage < peak < = 5mA has been current protection and short circuit protection output voltage with a digital display Platform: |
Size: 30720 |
Author:lei zhang |
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Description: 本设计以AT89S52单片机为核心控制芯片，实现数控直流电源功能的方案。设计采用8位精度的DA转换器DAC0832、三端可调稳压器LM350和一个UA741运算放大器构成稳压源，实现了输出电压范围为0V～+9.9V，电压步进0.1V的数控稳压电源，最大纹波只有10mV，具有较高的精度与稳定性。-The design AT89S52 microcontroller as the core control chip, digital DC power supply features program. Design uses 8-bit precision DA converter DAC0832, LM350 three-terminal adjustable regulator and pose a UA741 op-amp voltage source to achieve the output voltage range of 0V ~+9.9 V, 0.1V step voltage regulator NC power, the maximum ripple is only 10mV, with high precision and stability. Platform: |
Size: 221184 |
Author:李亚军 |
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Description: 模拟PID控制的开关电源系统存在电路复杂，调整困难，可靠性不高等问题。本文借助于DSP芯片强大的运算功
能，将模拟PID控制进行数字化改进- simulation of PID control switch power supply system is complex, difficult adjustment, circuit reliability of problems. This paper by DSP chip powerful computing power
Can, the simulation of digital PID control improvement Platform: |
Size: 404480 |
Author:陶志华 |
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Description: ATMEGA8_ LTC2400 6位半表头程序
LTC2400最高测量电压为5.3V，超过5.3V或反接都会烧掉。
模拟部分供电最好经过7815稳压，最高输入电压不宜超过18V。
模拟电路与数字电路分开供电。
不要使用开关电源或PWM升压、降压电路供电
-ATMEGA8_ LTC2400 6 ½ -digit meter program LTC2400 highest measured voltage is 5.3V, 5.3V or reverse will be burned over. After 7815 some of the best analog power supply voltage, the maximum input voltage should not exceed 18V. Separate analog and digital circuit power supply. Do not use a switching power supply or PWM buck, boost circuitry Platform: |
Size: 12288 |
Author:覃勤 |
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Description: 以单片机为中央控制器，设计一台出租车计价系统。系统中的直流电源由车载电源提供，电源电压为+9V~+24V。行驶里程传感器不需要设计，假设它具有汽车每行使1km提供1000个脉冲信号的特性。显示器可以采用LED数码管或LCD液晶显示模块。
应达到的技术指标：
1、 白天、晚上分别设置不同的里程单价，两位数码显示“X.X”,并用一键控制转换及
显示；
2、 两位数码显示车辆行使的里程数“XX”；
3、 营运起步价为5.00元，当小于3公里按起步价结算，当大于3公里时，按里程单价×里程数结算，并用三位数码显示“XX.X”；
4、 一键控制总价清除及开始计价，即按一下系统开始计价，再按一下时总价被清除（即用按键模拟出租车上的“空车”指示牌功能）。 -Single-chip microcomputer as the central controller, the design of a taxi meter system. System in the DC source is vehicle power supply, power supply voltage of+9 V ~+24 V. No mileage sensor design, assuming it has a car 1km each exercise provides 1000 pulses features. LED digital tube display can be used or LCD display module.
Should meet the technical specifications:
1, daytime, evening set different mileage unit, two digital display "XX", and conversion and with a key control
Display
2, the exercise of two digital display vehicle mileage "XX"
3, the operation starting at 5.00 yuan, while less than 3 km at prices starting at settlement, when more than 3 km, priced according to mileage × mileage settlement, and with three digital display "XX.X"
4, a key control and began to clear the total valuation, that valuation system began clicking, and then click when the total is cleared (ie, simulated with a taxi on the button "empty" sign function). Platform: |
Size: 54272 |
Author:yangzhen |
Hits:
Description: 以单片机为中央控制器，设计一台出租车计价系统。系统中的直流电源由车载电源提供，电源电压为+9V~+24V。行驶里程传感器不需要设计，假设它具有汽车每行使1km提供1000个脉冲信号的特性。显示器可以采用LED数码管或LCD液晶显示模块。
应达到的技术指标：
1、 白天、晚上分别设置不同的里程单价，两位数码显示“X.X”,并用一键控制转换及
显示；
2、 两位数码显示车辆行使的里程数“XX”；
3、 营运起步价为5.00元，当小于3公里按起步价结算，当大于3公里时，按里程单价×里程数结算，并用三位数码显示“XX.X”；
4、 一键控制总价清除及开始计价，即按一下系统开始计价，再按一下时总价被清除（即用按键模拟出租车上的“空车”指示牌功能）。 -Single-chip microcomputer as the central controller, the design of a taxi meter system. System in the DC source is vehicle power supply, power supply voltage of+9 V ~+24 V. No mileage sensor design, assuming it has a car 1km each exercise provides 1000 pulses features. LED digital tube display can be used or LCD display module.
Should meet the technical specifications:
1, daytime, evening set different mileage unit, two digital display "XX", and conversion and with a key control
Display
2, the exercise of two digital display vehicle mileage "XX"
3, the operation starting at 5.00 yuan, while less than 3 km at prices starting at settlement, when more than 3 km, priced according to mileage × mileage settlement, and with three digital display "XX.X"
4, a key control and began to clear the total valuation, that valuation system began clicking, and then click when the total is cleared (ie, simulated with a taxi on the button "empty" sign function). Platform: |
Size: 74752 |
Author:yangzhen |
Hits:
Description: 以单片机为中央控制器，设计一台出租车计价系统。系统中的直流电源由车载电源提供，电源电压为+9V~+24V。行驶里程传感器不需要设计，假设它具有汽车每行使1km提供1000个脉冲信号的特性。显示器可以采用LED数码管或LCD液晶显示模块。
应达到的技术指标：
1、 白天、晚上分别设置不同的里程单价，两位数码显示“X.X”,并用一键控制转换及
显示；
2、 两位数码显示车辆行使的里程数“XX”；
3、 营运起步价为5.00元，当小于3公里按起步价结算，当大于3公里时，按里程单价×里程数结算，并用三位数码显示“XX.X”；
4、 一键控制总价清除及开始计价，即按一下系统开始计价，再按一下时总价被清除（即用按键模拟出租车上的“空车”指示牌功能）。 -Single-chip microcomputer as the central controller, the design of a taxi meter system. System in the DC source is vehicle power supply, power supply voltage of+9 V ~+24 V. No mileage sensor design, assuming it has a car 1km each exercise provides 1000 pulses features. LED digital tube display can be used or LCD display module.
Should meet the technical specifications:
1, daytime, evening set different mileage unit, two digital display "XX", and conversion and with a key control
Display
2, the exercise of two digital display vehicle mileage "XX"
3, the operation starting at 5.00 yuan, while less than 3 km at prices starting at settlement, when more than 3 km, priced according to mileage × mileage settlement, and with three digital display "XX.X"
4, a key control and began to clear the total valuation, that valuation system began clicking, and then click when the total is cleared (ie, simulated with a taxi on the button "empty" sign function). Platform: |
Size: 52224 |
Author:yangzhen |
Hits:
Search - digital power supply