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1. 发明专利

JPH077384A NOTCH FILTER WITH PROGRAMMABLE WIDTH AND DEPTH 失效
公开(公告)号：JPH077384A
公开(公告)日：1995-01-10
申请号：JP17302293
申请日：1993-07-13
申请人： ALLEGRO MICROSYSTEMS INC
发明人： KURISUTAAN RII MUUDEII , POORU UOOKAA RAZAMU ZA SEKANDO
IPC分类号： H03H11/12 , H03H19/00
摘要： PURPOSE: To obtain a notch filter circuit which is programmable with respect to its notch width and depth. CONSTITUTION: A first switching capacitor resistor 37 is connected between the inputs of a filter circuit and a first amplifier and a second switching capacitor resistor 46 is connected between the output of the first amplifier and the input of a second amplifier, with the output of the second amplifier being connected to the output of the filter circuit. A third switching capacitor resistor 48 is connected between the output of the filter circuit and the input of the first amplifier and first and second programmable capacitor arrays 52 and 56 are respectively connected in parallel with the resistor 48 and, at the same time, in parallel with the resistor 37. Only the change of the capacitance of the second capacitor array 56 causes the corresponding change in the notch depth of a notch filter and only the change of the capacitance of the first capacitor array 52 causes the corresponding change in the notch width of the filter.

2. 发明专利

JP3618466B2 Hall effect iron goods proximity sensor 失效
公开(公告)号：JP3618466B2
公开(公告)日：2005-02-09
申请号：JP14391396
申请日：1996-06-06
申请人：アレグロ・マイクロシステムズ・インコーポレーテッドAllegro Microsystems Inc
发明人：テリ・トゥ , ラヴィ・ヴィグ
IPC分类号： G01P3/488 , G01D5/14 , G01D5/245 , G01R33/07 , G01V3/08 , H01H36/00 , H01L27/22 , H01L43/06
CPC分类号： G01V3/08 , G01D5/147 , G01R33/07

3. 发明专利

JPH09196699A CHOPPING SAMPLE-AND-HOLD CIRCUIT 失效
公开(公告)号：JPH09196699A
公开(公告)日：1997-07-31
申请号：JP32837396
申请日：1996-12-09
申请人： ALLEGRO MICROSYSTEMS INC
发明人： ARUBERUTO BIROTSUTEI , HERARUDO MONREARU
IPC分类号： G01D5/14 , G01R15/20 , G01R33/07 , G11C27/02 , H01L43/06
摘要： PROBLEM TO BE SOLVED: To provide a Hall sensor which is used for a dynamic offset, which is connected to a synchronous sample-and-hold circuit and an amplifier and whose sensitivity is good. SOLUTION: A chopping Hall sensor is provided with two pairs of obliquely faced Hall contacts which are connected alternately to output conductors of one pair of Hall switching circuits 20 which are used to alternately change over Hall-element exciting currents to a flow in the other direction from a flow in one direction via a Hall element while the Hall element is between the phase ϕ1 and the phase nϕ1 of a first clock signal with reference to one pair of DC supply conductors. Sample-and-hold circuits 34, 36 are constituted of first and second fundamental sample-and-hold circuits ESHCs provided with inputs which are connected respectively to the two Hall-voltage differential amplifiers 30.

4. 发明专利

JPH0949740A HALL EFFECT IRON ARTICLE PROXIMITY SENSOR 失效
公开(公告)号：JPH0949740A
公开(公告)日：1997-02-18
申请号：JP14391396
申请日：1996-06-06
申请人： ALLEGRO MICROSYSTEMS INC
发明人： RABUI BUIGU , TERI TOU
IPC分类号： G01P3/488 , G01D5/14 , G01D5/245 , G01R33/07 , G01V3/08 , H01H36/00 , H01L27/22 , H01L43/06
摘要： PROBLEM TO BE SOLVED: To provide a Hall-effect proximity sensor for ferromagnetic article having high sensitivity for the presence or absence of a ferromagnetic article in a sensor area. SOLUTION: The Hall-effect proximity sensor for iron article comprises a magnet structure 15 and an integrated circuit chip 12 including a Hall-element 14. The one end of the structure 15 is disposed adjacent to the chip 12 to be parallel with the surface of the element 14, and both the structure 15 and the element 14 are so disposed that the axis of the structure 15 coincides with that of the element 14. The structure 15 is a simple sandwich structure that two bar magnets 16, 17 are mounted at a mandrel 18. The mandrel 18 is formed of a permanent magnet or a pole piece. The bar magnet exhibits an S-pole and the mandrel exhibits an N-pole at the one end of the structure 15.

5. 发明专利

JPH0783699A SENSOR THAT IS ENERGIZED BY HALL VOLTAGE GRADIENT 失效
公开(公告)号：JPH0783699A
公开(公告)日：1995-03-28
申请号：JP15880094
申请日：1994-07-11
申请人： ALLEGRO MICROSYSTEMS INC
发明人： RABUI BUIGU , YABUSAKI HITOSHI , ARUBERUTO BIROTSUTEI
IPC分类号： G01D5/245 , G01D5/14 , G01P3/487 , G01P3/488 , G01P3/489 , G01R33/07
摘要： PURPOSE: To detect the front and rear end parts of a Hall voltage signal by detecting the generation of the gradient or a peak of a Hall signal pulse in the case of using one small Hall signal correcting capacitor and using a Hall signal tracing/holding circuit. CONSTITUTION: A Hall element 10 has an output connected with an input of a Hall signal amplifier 11. The amplified Hall voltage is applied to a minus input terminals of a Schmitt trigger circuits 14, 15 through circuit divider 16 and to plus input terminals of the circuits 14, 15 through a circuit divider comprising FET switches 18, 19 and a voltage holding capacitor 20. A tracing/ holding circuit having feedback from the circuits 14, 15 generates short output pulse every time when the Hall signal rises to the voltage at the minus input terminal of either one of the circuits 14, 15 higher than the holding voltage of the capacitor 20 by the equivalent value to the threshold voltage of a composing symmetric differential Schmitt trigger circuit 29.

6. 发明专利

JPH09321230A INDIVIDUAL PROTECTION TRANSISTOR FOR REDUCING INJECTION CURRENT FROM ONE PN JUNCTION ISLAND TO OTHER 失效
公开(公告)号：JPH09321230A
公开(公告)日：1997-12-12
申请号：JP12735296
申请日：1996-05-22
申请人： ALLEGRO MICROSYSTEMS INC
发明人： ROJIYAA SHII PEPIETSUTO , RICHIYAADO BII KUUPAA , ROBAATO JIEI SUTOTSUDAADO
IPC分类号： H01L21/822 , H01L27/04 , H01L27/06
摘要： PROBLEM TO BE SOLVED: To provide new improved means for protecting devices formed on PN junction isolation islands from the collection of a current injected into a substrate from other forward biased islands. SOLUTION: A semiconductor integrated circuit comprises a ptype substrate 50, n-type PN junction isolation islands 52, 54; the first islands 52 having power devices for injecting forward biased electrons into the substrate during operation. Individual protection bipolar transistors 55 formed on third islands 56 reduce the concentration of electric charges injected from second islands 54 at one side of injecting islands.

7. 发明专利

JPH08327393A PROXIMITY-SENSOR ASSEMBLY FOR HALL-EFFECT IRON-ARTICLE 失效
公开(公告)号：JPH08327393A
公开(公告)日：1996-12-13
申请号：JP13177496
申请日：1996-05-27
申请人： ALLEGRO MICROSYSTEMS INC
发明人： REIMONDO DABURIYUU ENJIERU , PIITAA JIEI GIRUBAATO , RABUI BUIGU , TERI TEYU , TERII KURATSUPU
IPC分类号： G01P3/488 , G01B7/00 , G01D5/14 , G01D5/245 , G01D11/24 , G01P3/487
摘要： PROBLEM TO BE SOLVED: To obtain a sensor module for the tooth of gear designed to be used flexibly as a subassembly for a wide range of facility and situations. SOLUTION: A sensor package 10 comprises a housing shell 40 having an opening, at one end thereof, into which the sensor package 10, a concentrator 60, a magnet 70, and a terminal cap 80 are fitted sequentially. The package 10 contains a Hall effect IC chip 20 and a leads. The leads extend from the side face of the body of chip 20 and bent, in the way thereof, at right angles toward the terminal cap 80 side. The body of the chip 20 is partially fitted in a window at the other end of the shell 40.

8. 发明专利

TW201326864A 根據磁場感測器感測的旋轉速度來自動調整磁場感測器的電路及方法审中-公开
简体标题：根据磁场传感器传感的旋转速度来自动调整磁场传感器的电路及方法
公开(公告)号：TW201326864A
公开(公告)日：2013-07-01
申请号：TW101128976
申请日：2012-08-10
申请人：愛列果微系統股份有限公司 , ALLEGRO MICROSYSTEMS, INC.
发明人：唐諾凡馬克 , DONOVAN, MARK J. , 杜克麥可 , DOOGUE, MICHAEL C. , 邁提爾萊恩 , METIVIER, RYAN
IPC分类号： G01R33/07 , G01D5/14
CPC分类号： G01R33/077 , G01D5/145 , G01P3/487 , G01P3/489
摘要：一種磁場感測器以及一種方法用於其中而提供代表目標物體旋轉角速度的一量測訊號，該磁場感測器，根據該量測之旋轉速度，而能夠自動地改變該磁場感測器的多種特性。
简体摘要：一种磁场传感器以及一种方法用于其中而提供代表目标物体旋转角速度的一量测信号，该磁场传感器，根据该量测之旋转速度，而能够自动地改变该磁场传感器的多种特性。

9. 发明专利

TW200830940A 電容器充電方法及設備 CAPACITOR CHARGING METHODS AND APPARATUS 审中-公开
简体标题：电容器充电方法及设备 CAPACITOR CHARGING METHODS AND APPARATUS
公开(公告)号：TW200830940A
公开(公告)日：2008-07-16
申请号：TW096140583
申请日：2007-10-29
申请人：愛列果微系統股份有限公司 ALLEGRO MICROSYSTEMS INC.
发明人：法傑曼坦尼 MANGTANI, VIJAY R. , 李乃琦 LEE, NAI-CHI , 蔡增男 TSAI, TSENG-NAN , 約翰休曼尼克 HUMENICK, JOHN
IPC分类号： H05B
CPC分类号： H02M3/33507
摘要：一設置有初級側輸出電壓感測電路的電容器充電電路,包括具有與該輸出電容器之RC時間常數間有一預定關係之RC時間常數的RC網路。該電容器電壓一旦到達滿電荷位準,該充電模式即被終止。經由測量跨於該初級側之RC網路的電壓,該輸出電壓被連續地偵測,該RC網路以與該輸出電容器相關的預定速率衰變,且該RC電壓一旦下降至一預定位準即開始該充電模式。按照本發明的另一態樣,馳返轉換器中的開關控制電路反應偵測到該開關端點處之電壓之斜率極性的改變而控制該開關的切斷時間。
简体摘要：一设置有初级侧输出电压传感电路的电容器充电电路,包括具有与该输出电容器之RC时间常数间有一预定关系之RC时间常数的RC网络。该电容器电压一旦到达满电荷位准,该充电模式即被终止。经由测量跨于该初级侧之RC网络的电压,该输出电压被连续地侦测,该RC网络以与该输出电容器相关的预定速率衰变,且该RC电压一旦下降至一预定位准即开始该充电模式。按照本发明的另一态样,驰返转换器中的开关控制电路反应侦测到该开关端点处之电压之斜率极性的改变而控制该开关的切断时间。

10. 发明专利

TW200706066A 電容器充電方法及裝置 CAPACITOR CHARGING METHODS AND APPARATUS 失效
简体标题：电容器充电方法及设备 CAPACITOR CHARGING METHODS AND APPARATUS
公开(公告)号：TW200706066A
公开(公告)日：2007-02-01
申请号：TW095113802
申请日：2006-04-18
申请人：愛列果微系統股份有限公司 ALLEGRO MICROSYSTEMS INC.
发明人：沙辛克威韓德 WEKHANDE, SHASHANK S. , 法傑曼坦尼 MANGTANI, VIJAY R. , 溫辛華 WEN, SIHUA
IPC分类号： H05B
CPC分类号： H02M3/33507
摘要：電容器充電電路設置有一次側輸出電壓感測電路,用以產生指示輸出電壓是否已到達想要位準之控制信號。控制信號未被主要開關關閉時所發生的電壓峰値影響。在一實施例中,電路過濾一次側電壓以與參考電壓比較,藉以提供控制信號。在另一實施例中,只有反應一次側電壓大於參考電壓並且二次電流不連續,AND閘才提供指示輸出電壓已到達想要位準之控制信號。在另一實施例中,只有反應於一次側電壓變得大於參考電壓之後發生的預定延遲並且二次電流不連續,AND閘才提供指示輸出電壓已到達想要位準之控制信號。根據本發明的另一觀點,設置輔助開關以減少輸出二極體的反向回復時間,藉以加速電容器充電時間。
简体摘要：电容器充电电路设置有一次侧输出电压传感电路,用以产生指示输出电压是否已到达想要位准之控制信号。控制信号未被主要开关关闭时所发生的电压峰値影响。在一实施例中,电路过滤一次侧电压以与参考电压比较,借以提供控制信号。在另一实施例中,只有反应一次侧电压大于参考电压并且二次电流不连续,AND闸才提供指示输出电压已到达想要位准之控制信号。在另一实施例中,只有反应于一次侧电压变得大于参考电压之后发生的预定延迟并且二次电流不连续,AND闸才提供指示输出电压已到达想要位准之控制信号。根据本发明的另一观点,设置辅助开关以减少输出二极管的反向回复时间,借以加速电容器充电时间。

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