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1. 发明申请

WO1986003902A1 POWER SUPPLY WITH NOISE IMMUNE CURRENT SENSING 审中-公开
标题翻译：具有噪声免疫电流感应功能
公开(公告)号：WO1986003902A1
公开(公告)日：1986-07-03
申请号：PCT/US1985002303
申请日：1985-11-25
申请人： HUGHES AIRCRAFT COMPANY
发明人： HUGHES AIRCRAFT COMPANY , FARNSWORTH, Robert, P. , MISCHIMA, Steve
IPC分类号： H02M03/335
CPC分类号： H02M3/33507
摘要： A power supply (20) incorporates a switching regulator circuit and a flyback transformer (26) having diodes (42) for unidirectional current flow from an output circuit of the transformer to a load (24). Substantially noise-free sensing of currents in both input (32) and output (34) windings of the transformer is provided by a sensing circuit composed of a sense winding (46) on the transformer and an integrator (50) coupled to the sense winding. The integrator provides an output signal proportional to volt seconds or flux which, in turn, is proportional to either the input current or the output current. The input current and the output current flow alternately due to a switching action of the regulator circuitry. The regulator circuitry includes an electronic switch (38) coupled via a comparator to an output terminal of the integrator so as to initiate a pulse of current in the input winding when the output currents drops below a preset value, and to terminate the input current when the input current exceeds a preset value. A bank of capacitors (54) connected to the input winding (32) stores electric energy in the intervals between pulses for subsequent discharge into the transformer during the current pulses. The foregoing arrangement of the power supply circuitry provides for isolation of input and output sections of the power supply to prevent the coupling of noise. An overvoltage sensing circuit may also be coupled to the output winding (34) for acting via a logic unit to terminate input current during intervals of excessively high output voltage.

2. 发明公开

EP0207096A1 POWER SUPPLY WITH NOISE IMMUNE CURRENT SENSING 失效
标题翻译：开关与所述电压 - 时间面积的测量电源。
公开(公告)号：EP0207096A1
公开(公告)日：1987-01-07
申请号：EP85906020.0
申请日：1985-11-25
申请人： Hughes Aircraft Company
发明人： FARNSWORTH, Robert, P. , MISCHIMA, Steve
IPC分类号： H02M3
CPC分类号： H02M3/33507
摘要： Un bloc d'alimentation (20) comprend un circuit régulateur de commutation et un transformateur de retour (26) ayant des diodes (42) assurant un flux unidirectionnel de courant depuis un circuit de sortie du transformateur jusqu'à une charge (24). Un circuit détecteur fournit une détection sensiblement sans bruits des courants dans les enroulements d'entrée (32) et de sortie (34) du transformateur. Le circuit détecteur est composé d'un enroulement détecteur (46) sur le transformateur et d'un intégrateur (50) couplé à l'enroulement détecteur. L'intégrateur fournit un signal de sortie proportionnel aux volts par seconde ou au flux de tension, qui, à leur tour, sont proportionnels au courant d'entrée ou de sortie. L'action de commutation des circuits régulateurs provoque le flux alterné du courant d'entrée et du courant de sortie. Les circuits régulateurs comprennent un commutateur électronique (38) couplé par l'intermédiaire d'un comparateur au terminal de sortie de l'intégrateur de façon à générer une impulsion de courant dans l'enroulement d'entrée lorsque les courants de sortie tombent au-dessous d'une valeur prédéterminée, et à couper le courant d'entrée lorsque celui-ci dépasse une valeur prédéterminée. Une batterie de condensateurs (54) connectés à l'enroulement d'entrée (32) accumule de l'énergie électrique dans les intervalles entre des impulsions pour la décharger par la suite dans le transformateur pendant les impulsions de courant. Cet agencement des circuits du bloc d'alimentation permet d'isoler les sections d'entrée et de sortie du bloc d'alimentation et d'empêcher le couplage des bruits. Un circuit détecteur de surtension peut également être couplé à l'enroulement de sortie (34) afin de couper par l'intermédiaire d'une unité logique le courant d'entrée pendant des intervalles ayant une tension de sortie trop élevée.

3. 发明授权

EP0207096B2 Power supply with volt-seconds sensing 失效
标题翻译：开关与所述电压 - 时间面积的测量电源。
公开(公告)号：EP0207096B2
公开(公告)日：1994-04-27
申请号：EP85906020.4
申请日：1985-11-25
申请人： Hughes Aircraft Company
发明人： FARNSWORTH, Robert, P. , MISCHIMA, Steve
IPC分类号： H02M3/335
CPC分类号： H02M3/33507
摘要： A power supply (20) incorporates a switching regulator circuit and a flyback transformer (26) having diodes (42) for unidirectional current flow from an output circuit of the transformer to a load (24). Substantially noise-free sensing of currents in both input (32) and output (34) windings of the transformer is provided by a sensing circuit composed of a sense winding (46) on the transformer and an integrator (50) coupled to the sense winding. The integrator provides an output signal proportional to volt seconds or flux which, in turn, is proportional to either the input current or the output current. The input current and the output current flow alternately due to a switching action of the regulator circuitry. The regulator circuitry includes an electronic switch (38) coupled via a comparator to an output terminal of the integrator so as to initiate a pulse of current in the input winding when the output currents drops below a preset value, and to terminate the input current when the input current exceeds a preset value. A bank of capacitors (54) connected to the input winding (32) stores electric energy in the intervals between pulses for subsequent discharge into the transformer during the current pulses. The foregoing arrangement of the power supply circuitry provides for isolation of input and output sections of the power supply to prevent the coupling of noise. An overvoltage sensing circuit may also be coupled to the output winding (34) for acting via a logic unit to terminate input current during intervals of excessively high output voltage.

4. 发明授权

EP0207096B1 Power supply with volt-seconds sensing 失效
标题翻译：具有电压传感的电源
公开(公告)号：EP0207096B1
公开(公告)日：1990-08-08
申请号：EP85906020.4
申请日：1985-11-25
申请人： Hughes Aircraft Company
发明人： FARNSWORTH, Robert, P. , MISCHIMA, Steve
IPC分类号： H02M3/335
CPC分类号： H02M3/33507
摘要： A power supply (20) incorporates a switching regulator circuit and a flyback transformer (26) having diodes (42) for unidirectional current flow from an output circuit of the transformer to a load (24). Substantially noise-free sensing of currents in both input (32) and output (34) windings of the transformer is provided by a sensing circuit composed of a sense winding (46) on the transformer and an integrator (50) coupled to the sense winding. The integrator provides an output signal proportional to volt seconds or flux which, in turn, is proportional to either the input current or the output current. The input current and the output current flow alternately due to a switching action of the regulator circuitry. The regulator circuitry includes an electronic switch (38) coupled via a comparator to an output terminal of the integrator so as to initiate a pulse of current in the input winding when the output currents drops below a preset value, and to terminate the input current when the input current exceeds a preset value. A bank of capacitors (54) connected to the input winding (32) stores electric energy in the intervals between pulses for subsequent discharge into the transformer during the current pulses. The foregoing arrangement of the power supply circuitry provides for isolation of input and output sections of the power supply to prevent the coupling of noise. An overvoltage sensing circuit may also be coupled to the output winding (34) for acting via a logic unit to terminate input current during intervals of excessively high output voltage.

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