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potentiometer

Use the on-board potentiometer to simulate an analog input,this input converted into a meaningful di

Use the on-board potentiometer to simulate an analog input,this input converted into a meaningful digital value in a microcontroller register, and use a group of LED to display this value.

標簽： input potentiometer meaningful converted

上傳時間： 2017-09-25

上傳用戶：iswlkje
數(shù)控DCDC轉(zhuǎn)換器在便攜產(chǎn)品中的應(yīng)用

Abstract: This tutorial discusses methods for digitally adjusting the output voltage of a DC-DC converter. The digital adjustmentmethods are with a digital-to-analog converter (DAC), a trim pot (digital potentiometer), and PWM output of a microprocessor.Each method is assessed and several DACs and digital potentiometers presented.

標簽： DCDC 數(shù)控便攜產(chǎn)品中的應(yīng)用

上傳時間： 2013-11-20

上傳用戶：zycidjl
利用數(shù)字電位器調(diào)整并校準升壓型DC-DC轉(zhuǎn)換器

The purpose of this application note is to show an example of how a digital potentiometer can be used in thefeedback loop of a step-up DC-DC converter to provide calibration and/or adjustment of the output voltage.The example circuit uses a MAX5025 step-up DC-DC converter (capable of generating up to 36V,120mWmax) in conjunction with a DS1845, 256 position, NV digital potentiometer. For this example, the desiredoutput voltage is 32V, which is generated from an input supply of 5V. The output voltage can be adjusted in35mV increments (near 32V) and span a range wide enough to account for resistance, potentiometer and DCDCconverter tolerances (27.6V to 36.7V).

標簽： DC-DC 數(shù)字電位器升壓型校準

上傳時間： 2014-12-23

上傳用戶：781354052
可程式盤面型位數(shù)電表

精確度0.05%滿刻度±1位數(shù)（Accuracy 0.05%F.S.±1digit）可測量交直流電流/交直流電壓/電位計/傳送器/Pt-100/荷重元/電阻等信號（Measuring DCA/DCV/ACA/ACV/potentiometer/Transmitter/Pt-100/Load Cell/Resistor/etc……）顯示范圍0-19999可任意規(guī)劃（Programmable rate 0 to 1999 digit）小數(shù)點可任意規(guī)劃（Decimal point can be modified）尺寸小，穩(wěn)定性高（Dimension small & High stability）

標簽： 程式數(shù)電

上傳時間： 2014-01-25

上傳用戶：RQB123
電源供應(yīng)器與數(shù)字電位器校準應(yīng)用筆記

Abstract: A resistive feedback network is often used to set the output voltage of a power supply. A mechanical potentiometer (pot)conveniently solves the problem of adjusting a power supply. For easier automatic calibration, a mechanical pot can be replaced witha digital pot. This application note presents a calibration solution that uses a digital pot, because digipots are smaller, do not movewith age or vibration, and can be recalibrated remotely. This proposed solution reduces the susceptibility of the system to thetolerance of the digital pot's end-to-end resistance, making the solution optimal fordesigners. This application note also explainssome of the equations required to calculate the resistor chain values and to use a digital pot in this way. A spreadsheet withstandard reisistor values is available for easy calculations.

標簽： 電源供應(yīng)器數(shù)字電位器應(yīng)用筆記校準

上傳時間： 2013-10-31

上傳用戶：caiguoqing
基于單片機的數(shù)字化B超鍵盤設(shè)計

針對目前使用的RS232接口數(shù)字化B超鍵盤存在PC主機啟動時不能設(shè)置BIOS，提出一種PS2鍵盤的設(shè)計方法。基于W78E052D單片機，采用8通道串行A/D轉(zhuǎn)換器設(shè)計了8個TGC電位器信息采集電路，電位器位置信息以鍵盤掃描碼序列形式發(fā)送，正交編碼器信號通過XC9536XL轉(zhuǎn)換為單片機可接收的中斷信號，軟件接收到中斷信息后等效處理成按鍵。結(jié)果表明，在滿足開機可設(shè)置BIOS同時，又可實現(xiàn)超聲特有功能，不需要專門設(shè)計驅(qū)動程序，接口簡單，成本低。 Abstract: Aiming at the problem of the digital ultrasonic diagnostic imaging system keyboard with RS232 interface currently used couldn?蒺t set the BIOS when the PC boot， this paper proposed a design method of PS2 keyboards. Based on W78E052D microcontroller，designed eight TGC potentiometers information acquisition circuit with 8-channel serial A/D converter， potentiometer position information sent out with keyboard scan code sequentially.The control circuit based on XC9536 CPLD is used for converting the mechanical actions of the encoders into the signals that can be identified by the MCU， software received interrupt information and equivalently treatmented as key. The results show that the BIOS can be set to meet the boot， ultrasound specific functionality can be achieved at the same time， it does not require specially designed driver，the interface is simple and low cost.

標簽： 單片機 B超數(shù)字化鍵盤設(shè)計

上傳時間： 2013-10-10

上傳用戶：asdfasdfd
CAT5110 CAT5118 CAT5119 CAT512

CAT5110/18/19/23/24/25 linear-taper digitally programmable potentiometers perform the same function as a mechanical potentiometer or a variable resistor. These devices consist of a fixed resistor and a wiper contact with 32-tap points that are digitally controlled through a2-wire up/down serial interface.

標簽： CAT 5110 5118 5119

上傳時間： 2013-11-22

上傳用戶：541657925
用戶程序示例教程

用戶程序示例教程 The Blinky project is a simple program for the LPC2138using Keil MCB2130 Microcontroller Board. It blinks the LEDs at speed according to the potentiometer setting and prints the current seting to the Serial Port 1.In addition it generates a sine wave with an adjustable frequency on the speaker of the board.

標簽： 用戶教程程序

上傳時間： 2014-12-27

上傳用戶：hongmo
A simple C program to strobe the LEDsvia Port D. The strobe rate is to be set by adjusting the volta

A simple C program to strobe the LEDsvia Port D. The strobe rate is to be set by adjusting the voltage drop over a potentiometer that is sampled by an ADC.

標簽： strobe D. adjusting the

上傳時間： 2014-01-09

上傳用戶：lifangyuan12
An assembly to strobe the LEDsvia Port D. The strobe rate is to be set by adjusting the voltage drop

An assembly to strobe the LEDsvia Port D. The strobe rate is to be set by adjusting the voltage drop over a potentiometer that is sampled by an ADC

標簽： strobe D. adjusting the

上傳時間： 2015-03-21

上傳用戶：13681659100

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potentiometer

Use the on-board potentiometer to simulate an analog input,this input converted into a meaningful di

數(shù)控DCDC轉(zhuǎn)換器在便攜產(chǎn)品中的應(yīng)用

利用數(shù)字電位器調(diào)整并校準升壓型DC-DC轉(zhuǎn)換器

可程式盤面型位數(shù)電表

電源供應(yīng)器與數(shù)字電位器校準應(yīng)用筆記

基于單片機的數(shù)字化B超鍵盤設(shè)計

CAT5110 CAT5118 CAT5119 CAT512

用戶程序示例教程

A simple C program to strobe the LEDsvia Port D. The strobe rate is to be set by adjusting the volta

An assembly to strobe the LEDsvia Port D. The strobe rate is to be set by adjusting the voltage drop