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基于51單片機的LCR測量儀(含程序、電路)

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ID:278679 發表于 2019-8-9 10:50 | 顯示全部樓層 |閱讀模式
本帖最后由 L_uan 于 2019-8-9 10:56 編輯

實際上總體電路原理圖并沒有那么清晰




第一章 系統設計 ··························································································3
1.1 設計要求 ························································································3
1. 1.1 設計任務 ·············································································3
1. 1.2 技術要求 ·············································································3
1.2 方案比較 ························································································3
1.3 方案論證 ························································································4
1. 3.1 總體思路 ·············································································4
1. 3.2 設計方案 ·············································································4
第二章 主要電路設計與說明 ···········································································5
2.1 TS556 芯片簡介 ·················································································5
2. 1.1 芯片的頂視圖及各引腳的功能 ···················································5
2. 1.2 芯片的等效功能方框圖及工作原理 ·············································5
2.2 CD4066 芯片的簡介 ··········································································7
2.3 測 RX 的 RC 振蕩電路 ·········································································7
2. 3.1 用 556 時基電路構成多諧振蕩器 ················································7
2. 3.2 測量電阻的電路模塊 ·······························································9
2.4 測 CX 的 RC 振蕩電路 ······································································10
2.5 測 LX 的電容三點式振蕩電路 ····························································· 11
第三章 軟件設計 ························································································ 11
第四章 系統測試 ························································································ 12
4.1 測試儀器 ······················································································12
4.2 指標測試及誤差分析 ·······································································12
4. 2.1 電阻的測量 ········································································12
4. 2.2 電容的測量 ········································································13
4. 2.3 電感的測量 ········································································13
第五章 總結 ······························································································ 13
參考文獻 ··································································································· 13
附 錄 ········································································································ 14
附錄 1 元器件清單 ······················································································14
附錄 2 程序清單 ·························································································15
附錄 3 總體電路圖 ······················································································17
附錄 4 印制板圖 ·························································································18
附錄 5 系統使用說明 ···················································································19


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基于51單片機的LCR測量儀(含程序、電路).pdf

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ID:300101 發表于 2019-9-9 08:30 | 顯示全部樓層
講的很清楚,圖上標記的不嚴謹,556標成555了
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ID:111676 發表于 2020-8-14 14:17 | 顯示全部樓層
講的很清楚
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ID:149642 發表于 2024-1-26 14:41 | 顯示全部樓層
我看了,沒搞明白,明明用了單片機,不可以直接用單片機輸出脈沖么,還用555來產生脈沖。。。555的受限于電容的精度。直接用高精度的晶振不好?
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