201137905 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種可產生磁場並可調節磁場大小及方向的 控制電路。 [先前技術] [0002] 目前，電子裝置所具有的功能越來越多也越來越強大’ 例如不少電子裝置具有能夠偵測方位和角度的電子 '羅# ，比如照相機可根據電子羅盤確定拍攝角度，手機或車· 栽GPS導航系統利用電子羅盤進行GPS定位。 [00〇3] —般來說，電子羅盤都是根據地球磁塲線來判斷電子裝 置的方位，因此，具有電子羅盤的電子裝置在出廠檢測 時，需要通過磁場來檢測。通常的檢測是通過在電子裝 置旁放置磁石，然而磁石的磁場並不均勻，而且在需要 測武電子羅盤靈敏度時，往往需要不斷.改變磁場的大小 ，雖然藉由改變磁石與電子裝复的距離可解決該問題， 然而，在磁石與電子裝置越遠，所產生的磁場線越不均 勻，往往不能很好的檢測電子羅盤的靈敏度。 [0004] 有鑒於此，有必要提供一種磁場產生及控制電路，以解 決上述問題。 【發明内容】 [0005] 本發明提供—種磁場產生及控制電路，能夠提供一均勻 的且大小可調節的磁場。 剛-種磁場產生及控制電路，包括電源、線圈、路徑切換 電路、路徑控制電路、第一調節電路以及第二調節電路 099113683 表單編號A0101201137905 VI. Description of the Invention: [Technical Field] [0001] The present invention relates to a control circuit that generates a magnetic field and can adjust the magnitude and direction of a magnetic field. [Prior Art] [0002] At present, electronic devices have more and more functions and are more and more powerful. For example, many electronic devices have an electronic device capable of detecting azimuth and angle, such as a camera can be determined according to an electronic compass. Shooting angle, mobile phone or car · GPS navigation system uses electronic compass for GPS positioning. [00〇3] In general, the electronic compass judges the orientation of the electronic device based on the earth's magnetic yoke. Therefore, the electronic device with the electronic compass needs to be detected by the magnetic field when it is factory tested. The usual detection is by placing a magnet beside the electronic device. However, the magnetic field of the magnet is not uniform, and when it is necessary to measure the sensitivity of the compass, it is often necessary to constantly change the size of the magnetic field, although by changing the distance between the magnet and the electronic assembly. This problem can be solved. However, the farther the magnet is from the electronic device, the more uneven the magnetic field lines are generated, and the sensitivity of the electronic compass is often not well detected. In view of the above, it is necessary to provide a magnetic field generating and control circuit to solve the above problems. SUMMARY OF THE INVENTION [0005] The present invention provides a magnetic field generation and control circuit that provides a uniform and adjustable magnetic field. A magnetic field generating and control circuit comprising a power supply, a coil, a path switching circuit, a path control circuit, a first regulating circuit, and a second regulating circuit. 099113683 Form No. A0101
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[0007] [0008] Ο 。路徑切換電路位於線圈以及電源之間並分別與之電連 接。路徑控制電路用於控制路徑切換電路進行切換使得 線圈與電源形成第一電流回路或第二電流回路，其中第 一電流回路中，線圈的第一端、第二端與電源的正極、 負極分別電連接，線圈產生第一磁場；第二電流回路中 ，線圈的第一端、第二端與電源的負極、正極分別電連 接，線圈產生第二磁場。第一調節電路位於第一電流回 路中，用於調節第一電流回路的電流大小從而相應地調 節第一磁場的磁場強度大小。第二調節電路位於第二電 流回路中，用於調節第二電流回路的電流大小從而相應 地調節第二磁場的磁場強度大小。 藉由本發明的磁場產生及控制電路，能夠提供一均勻的 且大小可調節的磁場，且結構簡單。 【實施方式】 請參閱圖1，為本發明第一實施方式中磁場產生及控制電 路1的模組架構圖。該磁場產生及控制電路1包括路徑控 制電路10、路徑切換電路20、線圈30以及電源40。線圈 30包括第一端301以及第二端302。其中，該路徑切換電 路20位於線圈30以及電源40之間並分別與之電連接，線 圈30的兩端通過該路徑切換電路20分別與電源40的正負 極電連接。該路徑控制電路10用於控制路徑切換電路20 進行切換使得線圈30與電源40形成第一電流回路或第二 電流回路。其中，在本實施方式中，該第一電流回路中 ，線圈30的第一端301、第二端302與電源40的正極401 、負極402分別電連接，第二電流回路中，線圈30的第一 099113683 表單編號Α0101 第5頁/共17頁 0992024104-0 201137905 端301、第二端302與電源40的負極402、正極401分別電 連接。 [0009] 該磁場產生及控制電路1還包括第一調節電路50以及第二 調節電路60，其中，該第一調節電路50位於電源40的負 極4 0 2與路徑切換電路2 0之間’該第二調節電路6 0位於電 源40的正極401與路徑切換電路20之間。其中，當路徑切 換電路2 0進行切換形成第一電流回路時，該第一調節電 路50位於第一電流回路中，用於調節第一電流回路的電 流大小，當路徑切換電路20進行切換形成第二電流回路 時，第二調節電路60位於第二電流回路中，用於調節第 二電流回路的電流大小。 [0010] 當路徑控制電路1 0控制路徑切換電路2 0使得線圈3 0與電 源40形成第一電流回路時，電流從線圈30的第一端301流 入並從第二端302流出，從而根據右手定則，可知該流過 電流的線圈30形成一磁場（以下設電流從線圈30的第一 端301流入並從第二端302流出時，線圈形成第一磁場） ，通過第一調節電路50的調節改變第一電流回路的電流 值，從而可改變第一磁場的大小。 [0011] 當路徑控制電路10控制路徑切換電路20使得線圈30與電 源40形成第二電流回路時，電流從線圈30的第二端302流 入並從第一端301流出，從而根據右手定則，可知流過電 流的線圈30形成一與第一磁場反方向的第二磁場，通過 第二調節電路6 0的調節改變第二電流回路的電流值，同 樣可改變該第二磁場的大小。 099113683 表單編號A0101 第6頁/共17頁 0992024104-0 201137905 [0012] 5亥磁場產生及控制電路1還包括一路徑開關7〇，該路徑開 關70位於電源4〇正極4〇1與第二調節電路6〇之間，用於 導通或截止電源40通過路徑切換電路2〇輸出至線圈3〇的 電壓，從而使得該磁場產生及控制電路丨處於工作或不工 作狀態。在其他實施方式中，該路徑開關7〇可位於電源 負極402與第一調節電路5〇之間，容易想到，該路徑開關 70還可設置於靠近線圈3〇的一侧。 [0013] 請參閱圖2，為本發明第一實施方式中磁場產生及控制電 0 路1的具體電路圖。在該具體電路中，該路徑控制電路10 包括輸入端101、光叙谷琴1 〇之以及控制綵圈1〇3。其中 ’輸入端101通過電阻R1與光耦合器1〇2第$輸入端1021 電連接，光耦合器102的第一輸入端1〇21還通過一電阻 R2與高電平端VCC電連接，光耦合器1〇2的第二輸入端 1 022還直接與輸入端101電連接，光耦合器1〇2的第一輸 出端1023通過電阻R3與高電平端VCC電連接，光麵合器 , ：! 102的第二輸出端1024與一NPN電晶體Q1銪閘極電連接。 q 控制線圈103位碎高電平端VCC與該NPN電晶體Q1的汲極 之間’在其他實施方式中，該NPN電晶體Q1可被NMOS管 代替。在本實施方式中，該路徑控制電路1〇還包括一二 極體D1與該控制線圈103並聯于該高電平端vcc與該NPN 電晶體Q1的汲極之間’該二極體D1用於對反向保護流過 控制線圈103的電流，即使得流過控制線圈1 〇3的電流只 能從靠近高電平端VCC的一側流至靠近NPN電晶體q 1的一 侧。其中’該高電平端VCC的高電平可通過電連接電源4〇 的正極401得到。 099113683 表單編號A0101 第7頁/共17頁 0992024104-0 201137905 [0014] [0015] [0016] [0017] 099113683 該路徑切換電路20為一雙刀雙擲開關κ，在本實施方式中 ’該雙刀雙擲開關κ與路徑控制電路10中的控制線圈ι〇3 構成一繼電器。該繼電器開關可為直流電磁式繼電器。 該雙刀雙擲開關Κ包括常閉端ΤΙ、Τ4，靜觸點Τ2、 、 乙 Τ 5 vJs 及常開端T3、T6。該雙刀雙擲開關κ的靜觸點T2、？5分 別與線圈30的第一端301、第二端3〇2電連接。雙刀雙擲 開關Κ的常開端Τ3通過路徑開關7〇與電源4〇的正極4〇1電 連接，另一常開端Τ6通過第一調節電路5〇與電源4〇的負 極402電連接。可以理解，如果路徑開關7〇位於磁場產生 及控制電路1的其他位置’則雙刀雙擲開關κ的常開端以 直接與電源40的正極401電連接。在本實施方式中，該第 一調節電路50為一變阻器R4，該路徑開關7〇為—用戶可 操作的開關Κ1，例如按鈕式開關或撥動式開關。用戶可 通過操作該路徑開關70導通或載止該電源4〇的電壓輸出 ，從而使得該磁場產生及控制電路丨處於孓作或不工作狀 ....： 態。 雙刀雙擲開關Κ的常閉端Τ1與電源40的負極402電連接， 常閉端Τ4通過第二調節電路60以及路徑開關7〇與電源4〇 的正極401電連接，可以理解，如果路徑開關7〇位於磁場 產生及控制電路1的其他位置，則雙刀雙擲開關κ的常閉 端Τ4通過第二調節電路60直接與電源4〇的正極4〇1電連 接。在本實施方式中，該第二調節電路6〇為一變阻器R5 當路徑控制電路10的輪入端1〇1輸入—低電平信號時，光 耦合器102第一輸入端1〇21以及第二輪入端1〇22形成一 0992024104-0 表單編號A0101 第8頁/共π頁 201137905 電勢差，從而使得光耦合器102導通，NPN電晶體Q1的閘 極通過該導通的光耦合器102與高電平端VCC電連接而獲 得一高電平，從而使得該NPN電晶體Q1相應導通。從而位 於高電平端VCC與NPN電晶體Q1的汲極之間的控制線圈 103中有電流流過，由於控制線圈103與雙刀雙擲開關K構 成一直流電磁繼電器，由直流電磁繼電器的性質可知當 控制線圈103中通過直流時，雙刀雙擲開關K的靜觸點T2 、T5此時與常開端T3、T6分別電連接。從而，線圈30的 第一端301通過路徑開關70與電源40的正極401電連接， Ο 線圈30的第二端302通過第一調節電路50 (即變阻器R4 )與電源40的負極402電連接，線圈30與電源40形成第 一電流回路。如前所述，電流從線圈30的第一端301流至 第二端302，從而線圈30產生第一磁場，由於變阻器R4位 於該第一電流回路中，通過調節變阻器R4的阻值大小可 相應的調節流過線圈30的電流的大小，從而可調節線圈 30產生的磁場的大小。 q [0018] 當路徑控制電路10輸入端輸入信號為高電平信號時，光 耦合器102的第一輸入端1021與第二輸入端1 022均處於 高電平，從而光耦合器102截止，相應地使得NPN電晶體 Q1截止，控制線圈103中無電流流過，此時雙刀雙擲開關 K的靜觸點T2、T5與常閉端ΤΙ、T4分別電連接。從而， 線圈30的第一端301與電源40的負極402電連接，線圈30 的第二端302通過第二調節電路60 (即變阻器R5)、路徑 開關70與電源40的正極401電連接，線圈30與電源40形 成第二電流回路。如前所述，電流從線圈30的第二端302 099113683 表單編號A0101 第9頁/共17頁 0992024104-0 201137905 流至第一端301，從而線圈30產生第二磁場，該第二磁場 與第一磁場方向相反。由於變阻器R5位於該第二電流回 路中，通過調節變阻器R5的阻值大小可相應的調節流過 線圈30的電流的大小，從而可調節線圈30產生的磁場的 大小。 [0019] 在本實施方式中，該路徑控制電路10的輸入端101還通過 一開關K2以及電阻R6與高電平端VCC電連接，該輸入端 101並通過一電阻R7接地。該開關K2可為一用戶可操作的 撥動開關或按鈕開關，當開關K2未導通時，輸入端101通 過電阻R7接地，從而輸入端101輸入低電平信號，當開關 K2導通時，輸入端101通過電阻R6與高電平端VCC電連接 »從而輸入端輸入南電平信號.。.[0007] [0008] Ο. The path switching circuit is located between the coil and the power source and is electrically connected thereto. The path control circuit is configured to control the path switching circuit to switch, so that the coil and the power source form a first current loop or a second current loop. In the first current loop, the first end and the second end of the coil are respectively electrically connected to the positive pole and the negative pole of the power source. Connected, the coil generates a first magnetic field; in the second current loop, the first end and the second end of the coil are electrically connected to the negative pole and the positive pole of the power source, respectively, and the coil generates a second magnetic field. The first regulating circuit is located in the first current loop for adjusting the magnitude of the current of the first current loop to adjust the magnitude of the magnetic field strength of the first magnetic field accordingly. The second regulating circuit is located in the second current loop for adjusting the magnitude of the current of the second current loop to adjust the magnitude of the magnetic field strength of the second magnetic field accordingly. With the magnetic field generating and controlling circuit of the present invention, a uniform and adjustable magnetic field can be provided with a simple structure. [Embodiment] Please refer to Fig. 1, which is a block diagram of a magnetic field generating and controlling circuit 1 according to a first embodiment of the present invention. The magnetic field generating and controlling circuit 1 includes a path control circuit 10, a path switching circuit 20, a coil 30, and a power source 40. The coil 30 includes a first end 301 and a second end 302. The path switching circuit 20 is located between the coil 30 and the power source 40 and electrically connected thereto. Both ends of the coil 30 are electrically connected to the positive and negative terminals of the power source 40 through the path switching circuit 20, respectively. The path control circuit 10 is for controlling the path switching circuit 20 to switch such that the coil 30 and the power source 40 form a first current loop or a second current loop. In the first current circuit, the first end 301 and the second end 302 of the coil 30 are electrically connected to the positive electrode 401 and the negative electrode 402 of the power source 40, respectively, and the second current loop, the coil 30 A 099113683 Form No. 101 0101 Page 5 / Total 17 Page 0992024104-0 201137905 The end 301 and the second end 302 are electrically connected to the negative electrode 402 and the positive electrode 401 of the power source 40, respectively. The magnetic field generating and controlling circuit 1 further includes a first adjusting circuit 50 and a second adjusting circuit 60, wherein the first regulating circuit 50 is located between the negative pole 4 0 2 of the power source 40 and the path switching circuit 200. The second adjustment circuit 60 is located between the positive electrode 401 of the power source 40 and the path switching circuit 20. When the path switching circuit 20 performs switching to form the first current loop, the first adjusting circuit 50 is located in the first current loop for adjusting the current level of the first current loop, and the path switching circuit 20 performs switching. In the case of the two current loops, the second regulating circuit 60 is located in the second current loop for adjusting the current level of the second current loop. [0010] When the path control circuit 10 controls the path switching circuit 20 such that the coil 30 and the power source 40 form a first current loop, current flows in from the first end 301 of the coil 30 and flows out from the second end 302, thereby according to the right hand. It is to be understood that the coil 30 through which the current flows forms a magnetic field (hereinafter, when the current flows from the first end 301 of the coil 30 and flows out from the second end 302, the coil forms a first magnetic field), and the adjustment is performed by the first regulating circuit 50. The current value of the first current loop is changed so that the magnitude of the first magnetic field can be changed. [0011] When the path control circuit 10 controls the path switching circuit 20 such that the coil 30 and the power source 40 form a second current loop, current flows from the second end 302 of the coil 30 and flows out from the first end 301, so that according to the right hand rule, it is known The coil 30 through which the current flows forms a second magnetic field opposite to the first magnetic field, and the current value of the second current loop is changed by the adjustment of the second regulating circuit 60, and the magnitude of the second magnetic field can also be changed. 099113683 Form No. A0101 Page 6 of 17 0992024104-0 201137905 [0012] The 5th magnetic field generating and controlling circuit 1 further includes a path switch 7〇, the path switch 70 is located at the power source 4〇 positive pole 4〇1 and the second adjustment Between the circuits 6A, the voltage output to the coil 3A through the path switching circuit 2 is turned on or off, so that the magnetic field generating and controlling circuit 丨 is in a working or inoperative state. In other embodiments, the path switch 7A can be located between the power source negative terminal 402 and the first regulating circuit 5A. It is easily conceivable that the path switch 70 can also be disposed on the side close to the coil 3〇. Please refer to FIG. 2, which is a specific circuit diagram of the magnetic field generating and controlling circuit 1 in the first embodiment of the present invention. In the specific circuit, the path control circuit 10 includes an input terminal 101, a light crystal table 1 and a control color wheel 1〇3. The input terminal 101 is electrically connected to the optocoupler 1〇2 input terminal 1021 through the resistor R1, and the first input terminal 21 of the optocoupler 102 is also electrically connected to the high-level terminal VCC through a resistor R2, and the optical coupling is performed. The second input terminal 1 022 of the device 1〇2 is also directly connected to the input terminal 101. The first output terminal 1023 of the photocoupler 1〇2 is electrically connected to the high-level terminal VCC through the resistor R3, and the optical combiner, :! The second output 1024 of 102 is electrically coupled to an NPN transistor Q1. q The control coil 103 is broken between the high level terminal VCC and the drain of the NPN transistor Q1. In other embodiments, the NPN transistor Q1 can be replaced by an NMOS transistor. In this embodiment, the path control circuit 1A further includes a diode D1 and the control coil 103 connected in parallel between the high-level end vcc and the drain of the NPN transistor Q1. The diode D1 is used for The current flowing through the control coil 103 is reversely protected, that is, the current flowing through the control coil 1 〇3 can flow only from the side close to the high level terminal VCC to the side close to the NPN transistor q 1 . The high level of the high level terminal VCC can be obtained by electrically connecting the positive electrode 401 of the power supply 4〇. 099113683 Form No. A0101 Page 7 of 17 0992024104-0 201137905 [0014] [0017] [0017] The path switching circuit 20 is a double pole double throw switch κ, in the present embodiment The double throw switch κ and the control coil ι3 in the path control circuit 10 constitute a relay. The relay switch can be a DC electromagnetic relay. The double-pole double-throw switch includes a normally closed end ΤΙ, a Τ 4, a static contact Τ 2, a Τ 5 vJs, and a normally open end T3, T6. The double-pole double-throw switch κ static contact T2? 5 is electrically connected to the first end 301 and the second end 3〇2 of the coil 30, respectively. The normally open end Τ3 of the double-pole double-throw switch 电 is electrically connected to the positive electrode 4〇1 of the power supply 4〇 through the path switch 7〇, and the other normally open terminal Τ6 is electrically connected to the negative electrode 402 of the power supply 4〇 through the first regulating circuit 5〇. It will be understood that if the path switch 7 is located at other positions of the magnetic field generating and control circuit 1 then the normally open end of the double pole double throw switch κ is electrically connected directly to the positive pole 401 of the power source 40. In the present embodiment, the first regulating circuit 50 is a varistor R4, and the path switch 7 is a user operable switch Κ1, such as a push button switch or a toggle switch. The user can turn on or load the voltage output of the power supply 4〇 by operating the path switch 70, so that the magnetic field generating and control circuit is in a working or non-operation state. The normally closed end Τ1 of the double-pole double-throw switch 电 is electrically connected to the negative electrode 402 of the power supply 40, and the normally closed end Τ4 is electrically connected to the positive electrode 401 of the power supply 4〇 through the second regulating circuit 60 and the path switch 7 ,. It can be understood that if the path The switch 7A is located at other positions of the magnetic field generating and control circuit 1, and the normally closed end Τ4 of the double-pole double-throw switch κ is directly electrically connected to the positive electrode 4〇1 of the power supply 4〇 through the second regulating circuit 60. In this embodiment, the second adjusting circuit 6 is a varistor R5. When the rounding end 1〇1 of the path control circuit 10 inputs a low level signal, the first input end of the optical coupler 102 is 1〇21 and the first The second wheel terminal 1〇22 forms a 0992024104-0 form number A0101 page 8 / total π page 201137905 potential difference, so that the optical coupler 102 is turned on, and the gate of the NPN transistor Q1 passes through the turned-on optical coupler 102 and the high The level terminal VCC is electrically connected to obtain a high level, so that the NPN transistor Q1 is turned on correspondingly. Therefore, a current flows in the control coil 103 between the high-level terminal VCC and the drain of the NPN transistor Q1. Since the control coil 103 and the double-pole double-throw switch K constitute a DC electromagnetic relay, the nature of the DC electromagnetic relay is known. When the control coil 103 passes the direct current, the stationary contacts T2 and T5 of the double-pole double-throw switch K are electrically connected to the normally-open ends T3 and T6, respectively. Thus, the first end 301 of the coil 30 is electrically connected to the positive pole 401 of the power source 40 via the path switch 70, and the second end 302 of the coil 30 is electrically coupled to the negative pole 402 of the power source 40 via the first regulating circuit 50 (ie, the varistor R4). The coil 30 forms a first current loop with the power source 40. As described above, current flows from the first end 301 of the coil 30 to the second end 302, so that the coil 30 generates a first magnetic field. Since the varistor R4 is located in the first current loop, the resistance of the varistor R4 can be adjusted accordingly. The magnitude of the current flowing through the coil 30 is adjusted so that the magnitude of the magnetic field generated by the coil 30 can be adjusted. [0018] When the input signal of the path control circuit 10 is a high level signal, the first input terminal 1021 and the second input terminal 1 022 of the optical coupler 102 are both at a high level, so that the optical coupler 102 is turned off. Correspondingly, the NPN transistor Q1 is turned off, and no current flows through the control coil 103. At this time, the static contacts T2 and T5 of the double-pole double-throw switch K are electrically connected to the normally closed terminals ΤΙ and T4, respectively. Therefore, the first end 301 of the coil 30 is electrically connected to the negative pole 402 of the power source 40, and the second end 302 of the coil 30 is electrically connected to the positive pole 401 of the power source 40 through the second regulating circuit 60 (ie, the varistor R5) and the path switch 70. 30 forms a second current loop with the power source 40. As previously mentioned, current flows from the second end 302 of the coil 30 099113683 Form No. A0101, page 9 / page 17 0992024104-0 201137905 to the first end 301, such that the coil 30 generates a second magnetic field, the second magnetic field A magnetic field is in the opposite direction. Since the varistor R5 is located in the second current loop, the magnitude of the current flowing through the coil 30 can be adjusted correspondingly by adjusting the resistance of the varistor R5, so that the magnitude of the magnetic field generated by the coil 30 can be adjusted. In the present embodiment, the input terminal 101 of the path control circuit 10 is also electrically connected to the high level terminal VCC through a switch K2 and a resistor R6, and the input terminal 101 is grounded through a resistor R7. The switch K2 can be a user-operated toggle switch or push button switch. When the switch K2 is not turned on, the input terminal 101 is grounded through the resistor R7, so that the input terminal 101 inputs a low level signal, and when the switch K2 is turned on, the input end 101 is electrically connected to the high level terminal VCC through the resistor R6 » so that the input terminal inputs the south level signal. .
[0020] 在本實施方式中，線圈30為繞制了多匝的線圈或多個具 有多匝繞線的線圈組。 [0021] 藉由本發明的磁場產生及控制電路1，可產生較均勻的磁 場且磁場大小可調節。 【圖式簡單說明】 [0022] 圖1為本發明第一實施方式中磁場產生及控制電路的模組 架構圖。 [0023] 圖2為本發明第一實施方式中磁場產生及控制電路的具體 電路圖。 【主要元件符號說明】 [0024] 磁場產生及控制電路：1 [0025] 路徑控制電路：10 099113683 表單編號A0101 第10頁/共17頁 0992024104-0 201137905 [0026] 路徑切換電路：20 [0027] 線圈：30 [0028] 電源：40 [0029] 第一端：301 [0030] 第二端：302 [0031] 正極：401 [0032] 負極：4 0 2 〇 [0033] 第一調節電路：50 [0034] 第二調節電路：60 [0035] 路徑開關：70 [0036] 輸入端：101 [0037] 光耦合器：102 [0038] 4ι·Τ Τ3Π · 1 Λ Ο 任奶冰固 · 1 UO [0039] 第一輸入端：1021 [0040] 第二輸入端：1022 [0041] ΝΡΝ電晶體：Q1 [0042] 高電平端：VCC [0043] 二極體：D1 [0044] 雙刀雙擲開關：Κ 099113683 表單編號Α0101 第11頁/共17頁 0992024104-0 201137905 [0045] 常閉端：ΤΙ、T4 [0046] 靜觸點：Τ2、Τ5 [0047] 常開端：Τ3、Τ6 [0048] 開關：Kl， Κ2 [0049] 電阻：Rl，R2，R3，R6，R7 [0050] 變阻器：R4, R5 099113683 表單編號A0101 第12頁/共17頁 0992024104-0In the present embodiment, the coil 30 is a coil wound with a plurality of turns or a plurality of coil groups having a plurality of windings. [0021] With the magnetic field generating and controlling circuit 1 of the present invention, a relatively uniform magnetic field can be generated and the magnitude of the magnetic field can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS [0022] FIG. 1 is a block diagram of a magnetic field generating and controlling circuit according to a first embodiment of the present invention. 2 is a specific circuit diagram of a magnetic field generation and control circuit in the first embodiment of the present invention. [Main Component Symbol Description] [0024] Magnetic Field Generation and Control Circuit: 1 [0025] Path Control Circuit: 10 099113683 Form No. A0101 Page 10 of 17 0992024104-0 201137905 [0026] Path Switching Circuit: 20 [0027] Coil: 30 [0028] Power supply: 40 [0029] First end: 301 [0030] Second end: 302 [0031] Positive pole: 401 [0032] Negative pole: 4 0 2 〇 [0033] First regulating circuit: 50 [ 0034] Second adjustment circuit: 60 [0035] Path switch: 70 [0036] Input: 101 [0037] Optocoupler: 102 [0038] 4ι·Τ Τ3Π · 1 Λ Ο 任奶冰固· 1 UO [0039] First input: 1021 [0040] Second input: 1022 [0041] ΝΡΝ transistor: Q1 [0042] High level: VCC [0043] Diode: D1 [0044] Double-pole double-throw switch: Κ 099113683 Form No. 1010101 Page 11 of 17 0992024104-0 201137905 [0045] Normally closed: ΤΙ, T4 [0046] Static contact: Τ2, Τ5 [0047] Normally open: Τ3, Τ6 [0048] Switch: Kl , Κ 2 [0049] Resistor: Rl, R2, R3, R6, R7 [0050] Rheostat: R4, R5 099113683 Form No. A0101 Page 12 of 17 992024104-0
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