|
|||||||||||
| 技術(shù)交流 | 電路欣賞 | 工控天地 | 數(shù)字廣電 | 通信技術(shù) | 電源技術(shù) | 測(cè)控之家 | EMC技術(shù) | ARM技術(shù) | EDA技術(shù) | PCB技術(shù) | 嵌入式系統(tǒng) 驅(qū)動(dòng)編程 | 集成電路 | 器件替換 | 模擬技術(shù) | 新手園地 | 單 片 機(jī) | DSP技術(shù) | MCU技術(shù) | IC 設(shè)計(jì) | IC 產(chǎn)業(yè) | CAN-bus/DeviceNe |
線性變化電壓轉(zhuǎn)換成非線形電壓有沒(méi)有簡(jiǎn)單方法 |
| 作者：ry-z 欄目：模擬技術(shù) |
| 2樓： | >>參與討論 |
| 作者： asunmad 于 2005/7/22 12:25:00 發(fā)布：
恐怕得有更詳細(xì)的要求吧？ 線性電壓經(jīng)過(guò)一個(gè)非線性電路（可以簡(jiǎn)單到只有一個(gè)二極管，也可以是一個(gè)比較器等等）就可以成為非線性電壓。問(wèn)題是你想要個(gè)怎樣的非線性電壓。 |
|
| 3樓： | >>參與討論 |
| 作者： 94539 于 2005/7/23 14:29:00 發(fā)布：
你想做伽瑪較準(zhǔn)電路？ |
|
| 4樓： | >>參與討論 |
| 作者： ry-z 于 2005/7/23 22:13:00 發(fā)布：
謝謝大家?guī)臀医鉀Q問(wèn)題。 謝謝大家?guī)臀医鉀Q問(wèn)題。是這樣的，一個(gè)從5V—1V線性變化的電壓，我想把它轉(zhuǎn)換成非線性電壓，前一段電壓變化緩慢，后一段電壓變化快，我想要一個(gè)簡(jiǎn)單方法。具體電壓曲線數(shù)據(jù)沒(méi)有想好。 |
|
| 5樓： | >>參與討論 |
| 作者： 94539 于 2005/7/24 3:37:00 發(fā)布：
可以通過(guò)CMOS 電路實(shí)現(xiàn), 比較復(fù)雜。供參考.... 可參考： ANALOG Integrated Circuits and Signal Processing (Historical Archive) Publisher: Springer Science+Business Media B.V., Formerly Kluwer Academic Publishers B.V. ISSN: 0925-1030 (Paper) 1573-1979 (Online) DOI: 10.1007/BF00166413 Issue: Volume 9, NUMBER 2 Date: March 1996 Pages: 181 - 187 COMPUTER aided analysis and design of MOS translinear CIRCUITs operating in strong inversion Remco J. Wiegerink1 (1) MESA Research Institute, UNIVERSITY of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands Abstract Recently, it was proposed to generalize the well-known translinear CIRCUIT principle in such a way that it also applies to MOS transistors operated in strong inversion. In this paper, the MOS translinear (MTL) principle will be briefly reviewed. A graphical analysis method for MTL-CIRCUITs is presented, which can also be applied to bipolar translinear CIRCUITs. This graphical method was implemented in a COMPUTER program, which is now used as an interactive design tool to implement nonlinear signal processing functions by MTL CIRCUITs. |
|
| 6樓： | >>參與討論 |
| 作者： 94539 于 2005/7/24 4:12:00 發(fā)布：
對(duì)不起，連接有誤，重發(fā)。 ANALOG Integrated Circuits and Signal Processing (Historical Archive) Publisher: Springer Science+Business Media B.V., Formerly Kluwer Academic Publishers B.V. ISSN: 0925-1030 (Paper) 1573-1979 (Online) DOI: 10.1007/BF00166414 Issue: Volume 9, NUMBER 2 Date: March 1996 Pages: 189 - 195 Variable-gamma CIRCUIT for colour television based on the MOS voltage-translinear principle R. Wiegerink1, H. Ten Pierick2, C. Jaspers3, W. De Haan4 and D. De Greef5 (1) MESA Research Institute, UNIVERSITY of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands (2) PHILIPS PCALE, P.O. Box 218, 5600 MD Eindhoven, The Netherlands (3) PHILIPS PCALE, P.O. Box 218, 5600 MD Eindhoven, The Netherlands (4) PHILIPS PCALE, P.O. Box 218, 5600 MD Eindhoven, The Netherlands (5) PHILIPS PCALE, P.O. Box 218, 5600 MD Eindhoven, The Netherlands Abstract In this paper a variable-gamma SYSTEM is discussed for application in high-quality colour television receivers. A variable-gamma SYSTEM can significantly improve the quality of the VIDEO image by enhancing the contrast in darker PARTs of the image without degrading the lighter areas of the screen. The adjustment of gamma can replace the traditional contrast and intensity adjustments. The main PART of the variable-gamma SYSTEM is a nonlinear function block, which is implemented by an MOS translinear (MTL) CIRCUIT. This CIRCUIT was realized in a STANDARD 2.5 m CMOS PROCESS. The CIRCUIT operates at a SINGLE 5V supply voltage. The measured small-signal-3dB bandwidth is 20MHZ. The CIRCUIT response is insensitive to temperature, which is an important property of translinear CIRCUITs. |
|
|
|
| 免費(fèi)注冊(cè)為維庫(kù)電子開發(fā)網(wǎng)會(huì)員，參與電子工程師社區(qū)討論，點(diǎn)此進(jìn)入 |
Copyright © 1998-2006 www.udpf.com.cn 浙ICP證030469號(hào) |