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1. 发明公开

EP4411507A1 ELECTRICAL CONSTANT CURRENT CIRCUIT, ELECTRICAL CONSTANT CURRENT SOURCE, MEASUREMENT ARRANGEMENT, COMPUTER PROGRAM PRODUCT 审中-公开
公开(公告)号：EP4411507A1
公开(公告)日：2024-08-07
申请号：EP23155022.9
申请日：2023-02-06
申请人： Siemens Industry Software Netherlands B.V.
发明人： Mustafazade, Arif
IPC分类号： G05F3/18 , G05F3/22 , G05F3/26
CPC分类号： G05F3/18 , G05F3/265 , G05F3/222
摘要： The invention relates to an electrical constant current circuit (CCC) in particular for supplying electrical power to a sensor, the circuit (CCC) comprising
- a power supply input terminal (INT),
- a constant current output terminal (OUT),
- a first transistor (TRF)
- a shunt-type voltage reference (RVS),
- a ground reference of the shunt-type voltage reference (SVR) via a grounding bias resistor (RBS),
- wherein the first transistor (TRF) base being biased by the shunt-type voltage reference (SVR) in series with the base-emitter of the second transistor (TRS),
- wherein the first transistor (TRF) emitter being connected to the power supply input terminal (INT) via a current set resistor (RST),
- wherein the first transistor (TRF) collector being connected to said output terminal (OUT).
The improved temperature stability, initial accuracy, drop out voltage and power consumption the invention proposes
- that the circuit (CCC) comprises a second transistor (TRS) in the line between the first transistor's (TRF) base and the shunt-type voltage reference (SVR),
- wherein the second transistor's (TRS) base and collector are connected to the first transistor's (TRF) base.

2. 发明授权

EP3926437B1 A HIGH ACCURACY ZENER BASED VOLTAGE REFERENCE CIRCUIT 有权
公开(公告)号：EP3926437B1
公开(公告)日：2024-04-03
申请号：EP20305656.9
申请日：2020-06-16
发明人： LIU, Hongwei , GAO, Yuan , HUYNH, Estelle
IPC分类号： G05F3/18 , G05F3/22

3. 发明公开

EP4300800A1 SWITCHING POWER SUPPLY PROTECTION CIRCUIT AND POWER SUPPLY SYSTEM 审中-公开
公开(公告)号：EP4300800A1
公开(公告)日：2024-01-03
申请号：EP23182884.9
申请日：2023-06-30
申请人： Guangdong Carrier HVAC Co., Ltd.
发明人： CHEN, Qingjun , FENG, Shanghua
IPC分类号： H02M3/335 , H02M1/08 , H02M1/32 , H02M1/34 , H02M1/36 , H02M1/00 , G05F3/18
摘要： Embodiments of this application belong to the field of power supply circuits, and relates to a switching power supply protection circuit and a power supply system, including a protection circuit (10), a switching circuit (20), a voltage feedback circuit (30), and a control circuit (40). The protection circuit (10) is respectively connected to the switching circuit (20), the voltage feedback circuit (30), and the control circuit (40), and is used to control output switch-on or output switch-off according to a supply voltage (VCC), correspondingly control switch-on or switch-off of the switching circuit according to the output switch-on or the output switch-off, and control the supply voltage (VCC) according to a feedback voltage of the voltage feedback circuit; the switching circuit is connected to the control circuit (40) and is used to control a working state of the control circuit; the voltage feedback circuit (30) is connected to the control circuit and is used to adjust a control voltage (+U2) and transmit the feedback voltage to the protection circuit (10); and the control circuit (40) is connected to a power supply (DCP) and is used to receive a voltage of the power supply for charging, provide a starting voltage for the protection circuit (10) and control the supply voltage according to the control voltage (+U2). The technical solution provided by this application can prevent the supply voltage and the output voltage from being too high.

4. 发明授权

EP3246784B1 A COMPENSATION CIRCUIT 有权
公开(公告)号：EP3246784B1
公开(公告)日：2020-01-01
申请号：EP16305577.5
申请日：2016-05-19
申请人： NXP USA, Inc.
发明人： TICO, Olivier , ABOUDA, Pascal Kamel , GAO, Yuan
IPC分类号： G05F3/18 , G05F3/26 , H02M3/156

5. 发明公开

EP3553625A1 ZENER DIODE VOLTAGE REFERENCE CIRCUIT 审中-实审
公开(公告)号：EP3553625A1
公开(公告)日：2019-10-16
申请号：EP18305459.2
申请日：2018-04-13
申请人： NXP USA, Inc.
发明人： BRULE, Simon
IPC分类号： G05F3/18 , G05F3/30
摘要： An integrated circuit includes a voltage reference circuit including a Zener diode having a first terminal coupled to a first node and a second terminal coupled to a first voltage supply terminal. A proportional to absolute temperature (PTAT) circuit is coupled at the first node and configured to generate a PTAT current. A PTAT compensation circuit is coupled at the first node. The PTAT compensation circuit includes a first current mirror having a first branch coupled at the first node.

6. 发明授权

EP2926498B1 POWER SUPPLY FOR ISOLATED BUS COMMUNICATION 失效转让
标题翻译：电源的隔离总线通信
公开(公告)号：EP2926498B1
公开(公告)日：2016-10-19
申请号：EP13799060.2
申请日：2013-12-03
申请人： Siemens Aktiengesellschaft
发明人： MOEN, Stian Skorstad
IPC分类号： H04L12/10 , H04L12/40 , H02H3/02 , H02H3/20 , H02H3/24 , H04Q1/14 , G05F3/18
CPC分类号： H02H3/20 , H02H3/023 , H02H3/243 , H04L12/40045 , H04L2012/40215

7. 发明授权

EP2407850B1 Household appliance circuit arrangement 有权
标题翻译：家用电器的电路
公开(公告)号：EP2407850B1
公开(公告)日：2015-06-17
申请号：EP11184977.4
申请日：2010-03-30
申请人： Electrolux Home Products Corporation N.V.
发明人： Lovisotto, Guiliano , Dorigo, Hubert , De Luca, Fernando
IPC分类号： G05F3/18 , G06F1/32 , H02J9/00 , H02M7/02
CPC分类号： H02J9/005

8. 发明公开

EP1036353A1 IMPROVEMENTS IN ZENER DIODE REFERENCE VOLTAGE STANDARDS 有权
标题翻译：稳压二极管参考电源
公开(公告)号：EP1036353A1
公开(公告)日：2000-09-20
申请号：EP99947699.7
申请日：1999-09-29
申请人： Metron Designs Ltd.
发明人： PICKERING, John Robert
IPC分类号： G05F3/18
CPC分类号： G05F3/18 , Y10S323/901
摘要： A method of operating a voltage reference element such as a zener diode comprises applying at least two current values to the device in respective periods of time one said value being such as to provide desired reference voltage characteristics of the device and the other being such that the average current during both periods provides a selected power dissipation to set a required temperature of operation of the device.

9. 发明公开

EP0600003A4 METHOD FOR TEMPERATURE-COMPENSATING ZENER DIODES HAVING EITHER POSITIVE OR NEGATIVE TEMPERATURE COEFFICIENTS. 失效
标题翻译： METHOD FOR具有负温度系数的正或齐纳二极管的温度补偿。
公开(公告)号：EP0600003A4
公开(公告)日：1994-11-02
申请号：EP92918698
申请日：1992-08-20
申请人： ANALOG DEVICES INC
发明人： BROKAW ADRIAN PAUL
IPC分类号： G05F1/56 , G05F1/46 , G05F1/567 , G05F3/18 , G05F3/20
CPC分类号： G05F1/463 , G05F1/567 , G05F3/18
摘要： An auto-TC voltage reference (Vo) wherein an operational amplifier (20) receives at one input (22) the voltage of a Zener diode (24) and at its other input (38) receives a compensation signal from a feedback circuit (30A) comprising a transistor (Q4) and resistor network (40). When one of the resistors of the network is trimmed to give a nominal output voltage for the reference, the TC of the reference voltage will have been reduced to zero, or nearly so. The circuitry is capable of compensating Zener diodes of either positive or negative TC.

10. 发明公开

EP4014101A1 CIRCUIT COMPRISING AN ADJUSTABLE ZENER VOLTAGE 无效
公开(公告)号：EP4014101A1
公开(公告)日：2022-06-22
申请号：EP19941279.2
申请日：2019-08-13
申请人： SAAB AB
发明人： ROSENGREN, Anders
IPC分类号： G05F1/56 , G05F3/18 , H02H9/00

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