201226919 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種萬用表，尤其涉及一種具有充電功能的 萬用表。 【先前彳支術】 [0002] 傳統的萬用表在使用時，若對其供電的電池電量耗盡時 ，就需要重新更換電池或者對電池進行充電後才能夠繼 續使用，這樣就會給使用者帶來麻煩。而且，在使用傳 統萬用表對外部電源等進行測試時，外部電源的電能會 由萬用表的測試表筆進入萬用表，如果能夠將這些電能 利用起來使得萬用表在使用過程中就可以對電池進行充 電，這樣就會使得萬用表在使用起來更加的方便。 【發明内容】 [0003] 有鑒於此，提供一種具有充電功能的萬用表實為必要。 [0004] —種萬用表，其包括本體、與該本體電連接的兩個表筆 以及為該萬用表提供電力的電池，在該本體内進一步設 置有充電系統用於對該電池進行充電，該充電系統包括 微控制器以及與該微控制器相連的外部輸入電壓採樣電 路、電池電壓採樣電路和調壓電路，該外部輸入電壓採 樣電路用於對經由該兩個表筆輸入的外部電壓進行採樣 並將採樣資料傳送給該微控制器，該電池電壓採樣電路 用於對該電池的電壓進行採樣並將採樣資料傳送給該微 控制器，該微控制器對該外部輸入電壓採樣電路與電池 電壓採樣電路輸送的採樣資料進行比對並根據比對結果 來控制該調壓電路對外部電壓進行調節以使其適合於對 099146509 表單編號A0101 第4頁/共19頁 0992079946-0 201226919 該電池進行充電。 [0005] 與先前技術相比，本發明所提供的該萬用表’其通過内 嵌與該萬用表表筆電連接的充電系統來實現使用外部電 源對萬用表電池進行充電的技術目的。不但使得萬用表 在使用起來更加的方便，而且還能夠在萬用表的使用過 程中同時對電池進行充電，從而使得萬用表的功能得到 了很好的強化。 【實施方式】 [0006] 下面將結合附圖對本發明所提供的實施例作進一步詳細 說明。 [0007] 請一併參見圖1至圖5，本發明實施方式所提供的萬用表 100，其包括本體10、與該本體1〇電連接的兩個表筆u 、為該萬用表100提供電力的電池12以及内嵌在該本體1〇 内的充電系統20，該充電系統2 〇用於控制由該兩個表筆 11進入該萬用表100的電能以對讓電池12準行充電。 [0008] 在該本體1〇上還設置有兩個選擇檔位K1及K2，該兩個選 擇檔位K1及K2分別對應於普通鹼性電池（可以採用小電 流脈衝方式進行充電）和充電電池，使用者可以根據萬 用表100目前所使用的電池的類型來選擇不同的檔位以對 相應的電池進行充電。 [0009] 該充電系統20包括一個微控制器21、一個充電方式選擇 電路22、一個外部輸入電壓採樣電路23、一個電池電壓 採樣電路24、一個調壓電路25、一個充電電流監測電路 26以及一個繼電器驅動電路27。該外部輸入電壓採樣電 099146509 表單編號A0101 第5頁/共19頁 0992079946-0 201226919 路23、電池電壓採樣電路24、充電方式選擇電路22、調 壓電路25、充電電流監測電路26以及繼電器驅動電路27 刀別由該微控制器21的一個單獨引腳控制，在本實施方 式中’該微控制器21為MIRCOCHIP公司的PIC16F73。 [0010] [0011] 該充電方式選擇電路22用於向該微控制器傳輸該電池類 型負sfl，以使該微控制器啟動合適的充電方式對該電池 進行充電。該充電方式選擇電路22包括並聯設置的第一 選擇電路221以及第二選擇電路222。該第一選擇電路 221包括串聯的電阻以與閼關SWi，電阻R1的兩端分別接 開關SW1和電源VCC ’該電阻R1與開關SW1之間具有接觸 點Μ。該第二選擇電路222包括串聯的電阻R2與開關SW2 ’電阻R2的兩端分別接開關SW2和電源VCC，在該電阻R2 與開關SW2之間具有接觸點D2。該第一選擇電路221通過 该接觸點D1與該微控制器21相連接，該第二選擇電路222 通過該接觸點D2與該微控制器21相連接。 該充電方式選擇電路2 2中的開關S W1以及S W 2分別對應於 該選擇檔位K1及K2用於開啟或者關閉該第一選擇電路221 以及第二選擇電路222。使用者根據該電池12的類型選擇 該選擇檔位K1及K2來開啟或者關閉該第一選擇電路221以 及第二選擇電路222 ’從而通過該充電方式選擇電路22將 該電池類型資訊傳輸至該微控制器以使該微控制器21採 用合適的充電方式對電池12進行充電。例如，當該電池 為普通鹼性電池時’選擇擋位K1，則該微控制器21可以 採用小電流脈衝方式對其進行充電，當電池為充電電池 時，選擇擋位K2，則微控制器21採用普通充電方式對其 099146509 表單編號A0101 第6頁/共19頁 0992079946-0 201226919 [0012] [0013] Ο [0014] [0015] Ο [0016] [0017] 099146509 進行充電。 可以理解的，該微控制器21還可以採用其他適合於對普 通驗性電池進行充電的方式對普通鹼性電池進行充電。 該外部輸入電壓採樣電路23包括串聯的電阻R3以及R4， 該電阻R3的一端與該兩個表筆Η電連接，另一端通過該 電阻R4接地。在該電阻R3以及R4之間具有接觸點D4，該 外部輪入電壓採樣電路23通過該接觸點D4與該微控制器 21相連接。 該外部輸入電壓採樣電路23用於對經由該兩個表筆11輸 入的外部電壓的大小進行採樣並將採樣結果輸送給該微 控制器21。 該電池電壓採樣電路24包括串聯的電阻!^5以及R6，該電 阻R5的一端接地，另一端通過該電阻R6與該電池12的正 極相連接。在該電阻R5以及R6^間具有接觸點D5，該電 池電壓採樣電路24通過該接觸點D5與該檄控制器21相連 接。 该電池電壓採樣電路24用於對該電池丨2的電壓進行採樣 並將採樣結果輸送給該微控制器21。 該調壓電路25包括並聯設置的升壓電路251以及降壓電路 252，該升壓電路251以及降壓電路252分別與該微控制 器21相連接並由該微控制器21單獨控制。該升壓電路25ι 包括一個接觸點D6，該降壓電路252包括一個接觸點…， 該升壓電路251以及降壓電路252分別通過該接觸點⑽及 D7與该兩個表筆11相連接，用於在該微控制器21的控制 表單編號A0101 第7頁/共19頁 0992079946-0 201226919 [0018] [0019] 099146509 下對經由該兩個表筆1 1輸入 0 該調壓電路25通過電阻R7、電阻R8連接電池12的正極， 用於對該電池12進行充電。該微控制器21通過判斷由該 外部輸入電壓採樣電路23以及電池電壓採樣電路24輸送 進來的電壓採樣資料來決定啟動該升壓電路251或者降壓 電路252進行工作。 s玄充電電流監測電路26包括第一運算放大器電路261、第 一運算放大器電路262以及第三運算放大器電路263。該 第一運算放大器電路261通過其正向輸入端的接觸點⑽耦 接在該調壓電路25與該電阻R7之間，用於採集該調壓電 路2 5輸出的電流信號。該第二運算放大器電路262通過其 正向輸入端的接觸點D9耦接在該電阻Rg與該電池12之間 ，用於採集輸入該電池12的電流信號《該第—運算放大 器電路261的輸出端通過電姐與該第三運算放大器電路 263的負向輸入端相連接，該第二運算放大器電路262的 輸出端通過電阻R10與該第三運算放大器電路263的正向 輸入端相連接，該第一運算放大器電路261與第二運算放 大器電路262的正向輸入端之間通過可變電阻Ru相連接 。该第二運异放大器電路263通過其輸出端的接觸點D1〇 與該微控制器21相連接，其用於收集該第—運算放大器 電路261以及第二運算放大器電路262所採集到的電流信 號並將該電流信號輸送給該微控制器21做數模轉 換以得出充電電流的大小。 该繼電器驅動電路27包括接觸點1)11及])12，該接觸 表單編號A0101 第8頁/共19頁 的外部電壓進行升壓及降壓 0992079946-0 [0020] 201226919 DU耗接在電阻R7與R8之間，接觸點D1.2耦接在電阻以與 電池12之間。該微控制器21通過該繼電器驅動電路27來 啟動或者關閉該萬用表100的充電功能。 [0021]使用時，用戶首先根據該萬用表1〇〇所使用的電池的類型 來選擇檔位K1及K2，此時開關SW1及開關SW2相應開啟或 關閉，經由該兩個表筆11引入外部電能進入該外部輸入 電壓採樣電路23，該外部輸入電壓採樣電路23對外部電 能的電壓進行採樣後將採樣資料輸送給該微控制器21， 同時該電池電壓採樣電路24對該電池12的電壓進行採樣 並將採樣資料輸送給該微控制器21，該微控制器21根據 該外部輸入電壓採樣電路23以及電池電壓採樣電路24所 輸送進來的電壓採樣資料來啟動該調壓電路25來對由該 表筆11輸送進來的外部電壓進行調節以對該電池12進行 充電，當外部的輸入電壓遠高於該電池12的電壓時，該 微控制器21控制該降壓電路252對外部電壓進行降壓，以 使外部電壓T降«合㈣該電池12進行的電職 圍，當外部的輸人電剔、於該電池12的電料，該微控 制器21就控制該升壓電路251對外部電壓進行升壓，以使 外部電㈣高到適合於對該電池12進行充電的電壓範圍 在對及電池12進行充電的過程中，該充電電流監測電 路26對該賴電路25輸$的電流崎縣並經過差分放 大後將採樣f料輸送給該微控髮21做數模（A/D)轉換 以付出充電電流的大小，該微控制器21根據該充電電流 監測電路2 6所監測到的充電電流的大小來對該繼電器驅 動電路27發送繼電器控制信號（RELAY)，當該微控制器 099146509 表單編號A0101 第9頁/共19頁 0992079946-0 201226919 [0022] [0023] [0024] [0025] [0026] 21監測到充電電流太大時’就會發送控制信號關閉充電 功能，然後間隔一定時間後再次進行檢測直到充電電 流符合充電要求時在發送控制信號啟動充電功能。 可以理解的，在本發明所提供的該萬用表1〇〇中該充電 系統20也可以不用對充電電流進行監測，也就是說該充 電電流監測電路26以及繼電器驅動電路27也可以省略。 可以理解的，在本發明所提供的該萬用表1〇〇中該充電 系統20當然還包括其他的電路，例如對該微控制器以進 订供電的供電電路等等，這些電路當然也包括在本發明 的範圍之内。 與先前技術相比，本發明所提供的該萬用表，其通過内 嵌與該萬用表表筆電連接的充電系統來實現使用外部電 源對萬用表電池進行充電的技術目的。不但使得萬用表 在使用起來更加的方便，而且還能夠在萬用表的使用過 程中同時對電池進行充電，從而使得萬用表的功能得到 了很好的強化。 良T、上所述，本發明確已符合發明專利之要件，遂依法提 出專利申請。惟，以上所述者僅為本發明之較佳實施方 式，自不能以此限制本案之申請專利範圍。舉凡熟悉本 案技藝之人士援依本發明之精神所作之等效修飾或變化 ，皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 圖1是本發明實施方式所提供的萬用表，其内嵌有充電系 統。 099146509 表單編號A0101 第頁/共19頁 0992079946-0 201226919 [0027] 圖2是圖1所示的萬用表的充電系統的工作原理圖。 [0028] 圖3至圖5分別為圖1所示的萬用表的充電系統的部分電路 圖，其相互組合後形成該充電系統的電路圖。 【主要元件符號說明】 [0029] 萬用表：100 [0030] 本體：10 [0031] 表筆：11 [0032] 電池：12 [0033] 充電系統：2 0 [0034] 微控制器：21 [0035] 充電方式選擇電路：22 [0036] 第一選擇電路：221 [0037] 第二選擇電路：222 [0038] 外部輸入電壓採樣電路：23 [0039] 電池電壓採樣電路：24 [0040] 調壓電路：25 [0041] 升壓電路：251 [0042] 降壓電路：252 [0043] 充電電流監測電路：2 6 [0044] 第一運算放大器電路：261 表單編號A0101 第11頁/共19頁201226919 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a multimeter, and more particularly to a multimeter having a charging function. [Previous sputum surgery] [0002] When the traditional multimeter is used, if the battery that supplies power to it is exhausted, it needs to be replaced or charged before it can be used. Come to trouble. Moreover, when testing a external power supply or the like using a conventional multimeter, the power of the external power source is entered into the multimeter by the test meter of the multimeter, and if the power can be utilized, the multimeter can be charged during use, so that Will make the multimeter more convenient to use. SUMMARY OF THE INVENTION [0003] In view of this, it is necessary to provide a multimeter having a charging function. [0004] A multimeter comprising a body, two test leads electrically connected to the body, and a battery for supplying power to the multimeter, wherein a charging system for charging the battery is further disposed in the body, the charging system A microcontroller and an external input voltage sampling circuit, a battery voltage sampling circuit and a voltage regulating circuit connected to the microcontroller, the external input voltage sampling circuit is configured to sample an external voltage input through the two test leads and The sampling data is transmitted to the microcontroller, and the battery voltage sampling circuit is configured to sample the voltage of the battery and transmit the sampling data to the microcontroller, and the microcontroller inputs the voltage sampling circuit and the battery voltage sampling circuit to the external input voltage The delivered sample data is compared and the voltage regulation circuit is controlled to adjust the external voltage according to the comparison result to make it suitable for charging the battery of 099146509 Form No. A0101 Page 4 / 19 pages 0992079946-0 201226919. Compared with the prior art, the multimeter provided by the present invention achieves the technical purpose of charging a multimeter battery using an external power source by embedding a charging system electrically connected to the multimeter. Not only makes the multimeter more convenient to use, but also can charge the battery at the same time during the use of the multimeter, so that the function of the multimeter is well strengthened. [Embodiment] The embodiments provided by the present invention will be further described in detail below with reference to the accompanying drawings. Referring to FIG. 1 to FIG. 5 , a multimeter 100 according to an embodiment of the present invention includes a body 10 , two test leads u electrically connected to the body 1 , and a battery for supplying power to the multimeter 100 . 12 and a charging system 20 embedded in the body 1 , for controlling the electrical energy entering the multimeter 100 by the two test leads 11 to allow the battery 12 to be charged. [0008] Two selected gear positions K1 and K2 are further disposed on the body 1〇, and the two selected gear positions K1 and K2 respectively correspond to a common alkaline battery (which can be charged by a small current pulse method) and a rechargeable battery The user can select different gear positions according to the type of battery currently used by the multimeter 100 to charge the corresponding battery. The charging system 20 includes a microcontroller 21, a charging mode selection circuit 22, an external input voltage sampling circuit 23, a battery voltage sampling circuit 24, a voltage regulating circuit 25, a charging current monitoring circuit 26, and a Relay drive circuit 27. The external input voltage sampling power 099146509 Form No. A0101 Page 5 / 19 pages 0992079946-0 201226919 Road 23, battery voltage sampling circuit 24, charging mode selection circuit 22, voltage regulating circuit 25, charging current monitoring circuit 26 and relay driving circuit The blade is controlled by a single pin of the microcontroller 21, which in the present embodiment is the PIC16F73 of MIRCOCHIP. [0011] The charging mode selection circuit 22 is configured to transmit the battery type negative sfl to the microcontroller to enable the microcontroller to initiate a suitable charging mode to charge the battery. The charging mode selection circuit 22 includes a first selection circuit 221 and a second selection circuit 222 which are disposed in parallel. The first selection circuit 221 includes a series resistor to be connected to the switch SWi. The two ends of the resistor R1 are respectively connected to the switch SW1 and the power source VCC. The resistor R1 has a contact point 与 with the switch SW1. The second selection circuit 222 includes a resistor R2 connected in series and a switch SW2. Both ends of the resistor R2 are respectively connected to the switch SW2 and the power source VCC, and a contact point D2 is formed between the resistor R2 and the switch SW2. The first selection circuit 221 is connected to the microcontroller 21 via the contact point D1, and the second selection circuit 222 is connected to the microcontroller 21 via the contact point D2. The switches S W1 and S W 2 in the charging mode selection circuit 2 2 correspond to the selection gears K1 and K2, respectively, for turning the first selection circuit 221 and the second selection circuit 222 on or off. The user selects the selected gear positions K1 and K2 according to the type of the battery 12 to turn on or off the first selection circuit 221 and the second selection circuit 222' to transmit the battery type information to the micro through the charging mode selection circuit 22. The controller causes the microcontroller 21 to charge the battery 12 in a suitable charging mode. For example, when the battery is a normal alkaline battery, 'selecting the gear K1, the microcontroller 21 can charge it with a small current pulse mode. When the battery is a rechargeable battery, select the gear K2, then the microcontroller 21 is charged by ordinary charging method 099146509 Form No. A0101 Page 6 / 19 pages 0992079946-0 201226919 [0013] [0014] [0015] Ο [0016] [0017] 099146509 Charging. It will be appreciated that the microcontroller 21 can also charge a conventional alkaline battery in a manner suitable for charging a conventional battery. The external input voltage sampling circuit 23 includes resistors R3 and R4 connected in series, one end of the resistor R3 is electrically connected to the two meter leads, and the other end is grounded through the resistor R4. There is a contact point D4 between the resistors R3 and R4, and the external wheel-in voltage sampling circuit 23 is connected to the microcontroller 21 via the contact point D4. The external input voltage sampling circuit 23 is for sampling the magnitude of the external voltage input via the two test leads 11 and supplying the sampling result to the microcontroller 21. The battery voltage sampling circuit 24 includes resistors in series!^5 and R6. One end of the resistor R5 is grounded, and the other end is connected to the positive pole of the battery 12 through the resistor R6. There is a contact point D5 between the resistors R5 and R6^, and the battery voltage sampling circuit 24 is connected to the 檄 controller 21 via the contact point D5. The battery voltage sampling circuit 24 is for sampling the voltage of the battery pack 2 and supplying the sampling result to the microcontroller 21. The voltage regulating circuit 25 includes a boosting circuit 251 and a step-down circuit 252 which are provided in parallel, and the boosting circuit 251 and the step-down circuit 252 are respectively connected to the micro controller 21 and are individually controlled by the microcontroller 21. The boosting circuit 251 includes a contact point D6. The step-down circuit 252 includes a contact point. The boosting circuit 251 and the step-down circuit 252 are connected to the two test leads 11 through the contact points (10) and D7, respectively. Used in the control form No. A0101 of the microcontroller 21, page 7/19 pages 0992079946-0 201226919 [0018] [0019] 099146509, the input voltage is passed through the two test leads 1 1 and the voltage regulating circuit 25 passes through the resistor R7 and resistor R8 are connected to the positive electrode of the battery 12 for charging the battery 12. The microcontroller 21 determines to activate the booster circuit 251 or the step-down circuit 252 to operate by determining the voltage sample data supplied from the external input voltage sampling circuit 23 and the battery voltage sampling circuit 24. The sinky charging current monitoring circuit 26 includes a first operational amplifier circuit 261, a first operational amplifier circuit 262, and a third operational amplifier circuit 263. The first operational amplifier circuit 261 is coupled between the voltage regulating circuit 25 and the resistor R7 through a contact point (10) of its forward input terminal for collecting a current signal output by the voltage regulating transistor 25. The second operational amplifier circuit 262 is coupled between the resistor Rg and the battery 12 through a contact point D9 of the forward input terminal thereof for collecting a current signal input to the battery 12. The output of the first operational amplifier circuit 261 The output terminal of the second operational amplifier circuit 262 is connected to the positive input terminal of the third operational amplifier circuit 263 via a resistor R10. The first terminal of the second operational amplifier circuit 263 is connected to the negative input terminal of the third operational amplifier circuit 263. An operational amplifier circuit 261 is coupled to the forward input of the second operational amplifier circuit 262 via a variable resistor Ru. The second op amp circuit 263 is connected to the microcontroller 21 through a contact point D1 of its output terminal for collecting the current signals collected by the first operational amplifier circuit 261 and the second operational amplifier circuit 262. The current signal is supplied to the microcontroller 21 for digital-to-analog conversion to determine the magnitude of the charging current. The relay driving circuit 27 includes contact points 1) 11 and ]) 12, and the external voltage of the contact form No. A0101 page 8 / 19 pages is boosted and stepped down 0992079946-0 [0020] 201226919 DU is consumed in the resistor R7 Between R8 and the R8, the contact point D1.2 is coupled between the resistor and the battery 12. The microcontroller 21 activates or deactivates the charging function of the multimeter 100 via the relay drive circuit 27. [0021] In use, the user first selects the gear positions K1 and K2 according to the type of the battery used by the multimeter, and the switch SW1 and the switch SW2 are respectively turned on or off, and the external electric energy is introduced via the two test leads 11. The external input voltage sampling circuit 23 is input, and the external input voltage sampling circuit 23 samples the voltage of the external electric energy, and then supplies the sampling data to the microcontroller 21, and the battery voltage sampling circuit 24 samples the voltage of the battery 12. The sampling data is sent to the microcontroller 21, and the microcontroller 21 activates the voltage regulating circuit 25 according to the voltage sampling data sent by the external input voltage sampling circuit 23 and the battery voltage sampling circuit 24 to The external voltage supplied from the pen 11 is adjusted to charge the battery 12, and when the external input voltage is much higher than the voltage of the battery 12, the microcontroller 21 controls the step-down circuit 252 to step down the external voltage. In order to reduce the external voltage T to the electric power distribution of the battery 12, when the external input electric power is removed from the electric material of the battery 12, the microcontroller 21 The boosting circuit 251 is controlled to boost the external voltage so that the external power (four) is high enough to apply a voltage range for charging the battery 12 during charging of the battery 12, and the charging current monitoring circuit 26 Lai circuit 25 loses the current of the county and after differential amplification, the sampled material is sent to the micro-control 21 for digital-to-analog (A/D) conversion to pay the magnitude of the charging current, and the microcontroller 21 according to the charging current The magnitude of the charging current monitored by the monitoring circuit 26 is sent to the relay drive circuit 27 to send a relay control signal (RELAY) when the microcontroller is 099146509, form number A0101, page 9 of 19 pages 0992079946-0 201226919 [0022] [0025] [0026] [0026] 21 when the charging current is too large, 'will send a control signal to turn off the charging function, and then check again after a certain time interval until the charging current meets the charging requirement when the transmission control signal is activated. Charging function. It can be understood that the charging system 20 can also not monitor the charging current in the multimeter provided by the present invention, that is, the charging current monitoring circuit 26 and the relay driving circuit 27 can also be omitted. It can be understood that, in the multimeter provided in the present invention, the charging system 20 of course includes other circuits, such as a power supply circuit for powering the microcontroller, etc., which are of course included in the present invention. Within the scope of the invention. Compared with the prior art, the multimeter provided by the present invention achieves the technical purpose of charging a multimeter battery using an external power source by embedding a charging system electrically connected to the multimeter. Not only makes the multimeter more convenient to use, but also can charge the battery at the same time during the use of the multimeter, so that the function of the multimeter is well strengthened. Good T, above, the invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a multimeter provided in an embodiment of the present invention, in which a charging system is embedded. 099146509 Form No. A0101 Page 19 of 19 0992079946-0 201226919 [0027] FIG. 2 is a schematic diagram showing the operation of the charging system of the multimeter shown in FIG. 1. 3 to FIG. 5 are partial circuit diagrams of the charging system of the multimeter shown in FIG. 1, which are combined with each other to form a circuit diagram of the charging system. [Main component symbol description] [0029] Multimeter: 100 [0030] Body: 10 [0031] Test pen: 11 [0032] Battery: 12 [0033] Charging system: 2 0 [0034] Microcontroller: 21 [0035] Charging mode selection circuit: 22 [0036] First selection circuit: 221 [0037] Second selection circuit: 222 [0038] External input voltage sampling circuit: 23 [0039] Battery voltage sampling circuit: 24 [0040] Voltage regulating circuit: 25 [0041] Boost circuit: 251 [0042] Step-down circuit: 252 [0043] Charging current monitoring circuit: 2 6 [0044] First operational amplifier circuit: 261 Form No. A0101 Page 11 of 19
099146509 0992079946-0 201226919 [0045] 第二運算放大器電路：262 [0046] 第三運算放大器電路：263 [0047] 繼電器驅動電路：2 7 [0048] 接觸點：D1〜D12 [0049] 電阻：R1~R11 [0050] 開關：SW1，SW2 [0051] 選擇檔位：ΚΙ，K2 099146509 表單編號A0101 第12頁/共19頁 0992079946-0099146509 0992079946-0 201226919 [0045] Second operational amplifier circuit: 262 [0046] Third operational amplifier circuit: 263 [0047] Relay drive circuit: 2 7 [0048] Contact point: D1 to D12 [0049] Resistance: R1~ R11 [0050] Switch: SW1, SW2 [0051] Select gear: ΚΙ, K2 099146509 Form No. A0101 Page 12 / Total 19 Page 0992079946-0