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1. 发明专利

GB1066098A Improvements relating to battery-charging systems 未知
公开(公告)号：GB1066098A
公开(公告)日：1967-04-19
申请号：GB1444665
申请日：1965-04-05
申请人： STONE J & CO LTD
发明人： BERRY PETER RAYMOND
IPC分类号： H02J7/14

2. 发明专利

GB1115029A Improvements relating to battery-charging installations 未知
公开(公告)号：GB1115029A
公开(公告)日：1968-05-22
申请号：GB2353665
申请日：1965-06-02
申请人： STONE J & CO LTD
发明人： HOBBS EDWIN DANIEL , BERRY PETER RAYMOND
IPC分类号： H02J7/16 , H02J7/26
摘要： 1,115,029. Battery charging systems. J. STONE & CO. (DEPTFORD) Ltd. 2 May, 1966 [2 June, 1965], No. 23536/65. Heading H2H. [Also in Division G3] A battery-charging installation comprises an A.C. source such as an alternator 1 which supplies a battery 2 over a rectifier 4 and another load 3 over a separate rectifier 5, the alternator 1 being controlled by a field regulator 6, e.g. of the saturable reactor or transistor type, having a single control winding to which are applied, in parallel, three control voltages, the regulator responding solely to that one voltage which is the largest at the time. One control voltage is the battery voltage which is applied directly to the regulator 6 by way of leads 7; another is dependent upon the alternator output current and is applied to the regulator by way of a transformer 9 and a rectifier 12; the third control voltage is dependent upon the battery charging current, and is derived from a transformer 8 and a rectifier 11. A blocking diode 13 permits the battery to discharge into the load 3 but prevents the battery from being charged through the load rectifier 5. The arrangement is such that control at constant voltage is superseded, at a predetermined value of current, by constant current control, so that the alternator is protected against excessive output current and the battery against excessive charging current. Compounding to effect drooping generator and battery-charging characteristics may be introduced by the provision of a transistor, acting as a variable resistance in a voltage divider associated with the battery 2 (Figs. 2, 2a, not shown). The battery 2 and the load 3 may be supplied through a common rectifier, the current signal to the regulator being derived by way of a transformer/rectifier circuit connected across the A.C. windings, in the alternator output circuit, of a saturable choke whose control winding is arranged to carry the current supplied to the load 3 but not the battery-charging current. The source of A.C. may be the mains supply, in which case the regulator 6 is arranged to control an input from said supply.

3. 发明专利

GB1119850A Improvements relating to the excitation of dynamo-electric generators 未知
公开(公告)号：GB1119850A
公开(公告)日：1968-07-17
申请号：GB5143165
申请日：1965-12-03
申请人： STONE J & CO LTD
发明人： HOBBS EDWIN DANIEL , BERRY PETER RAYMOND
IPC分类号： H02P9/30 , H02P9/34 , H02P9/38
摘要： 1,119,850. Alternators with D.C. excitation. J. STONE & CO. (DEPTFORD) Ltd. 22 Nov., 1966 [3 Dec., 1965], No. 51431/65. Heading H2A. In a dynamo-electric generator, e.g. alternator 2, a bridge circuit 8 connected between the generator output and an excitation-controlling transistor or thyristor circuit 7 and comprising non-linear resistors 9 turns on the latter circuit 7 when the bridge input voltage is low, thereby facilitating or initiating self-excitation build-up, and, by virtue of a polarity reversal of the bridge output voltage when its input voltage approaches a value corresponding to the generator normal output voltage, becomes inoperative for maintaining the circuit 7. As shown, the field winding 1 is normally supplied via a rectifier 3 and a static regulator 4, e.g. of the saturable-reactor type, which is shunted by the circuit 7 when turned on, to allow maximum available excitation current. The bridge 8 also comprises normal resistors 10 which may be adjustable and is supplied via a smoothng circuit 13, 14, a rectifier bridge 11 and a step-up transformer 12. A D.C. load which may include a battery may be connected to terminals 5 and/or an A.C. load to terminals 6. In other embodiments the regulator is of the 3 pH saturable reactor type, and the bridge 8 exerts an overriding control over a pair of regulating transistors.

4. 发明专利

GB1110123A Improvements relating to the protection of semi-conductor apparatus 未知
公开(公告)号：GB1110123A
公开(公告)日：1968-04-18
申请号：GB1740165
申请日：1965-04-26
申请人： STONE J & CO LTD
发明人： LAURENCE RAYMOND JOHN , BERRY PETER RAYMOND
IPC分类号： H02H3/02 , H02H7/06 , H02H9/04 , H02M7/12
摘要： 1,110,123. Protective arrangements. J. STONE & CO. (DEPTFORD) Ltd. 19 April, 1966 [26 April, 1965], No. 17401/65. Heading H2K. An arrangement for protecting semi-conductor apparatus comprises a thyristor 3 connected across the supply to the apparatus and a Zener diode 4 or other device connected to the apparatus and responsive to overvoltage conditions to apply a control signal to the thyristor to render it conducting to short-circuit the apparatus. A fuse 7 is then blown, or an automatic circuit-breaker is operated, by the shortcircuit current to interrupt the supply to the apparatus. As shown, the Zener diode 4 is connected in series with a resistor 5 across the supply to the apparatus 1 and, in the event of overvoltage, conducts. The voltage across the resistor 5 is applied to the gate of the thyristor 3 through a variable resistor 6 to render the thyristor 3 conducting, a slight delay being provided by capacitors 9 to prevent undesired operation under transient conditions. Should the supply be alternating current, then diodes 10, 11 are connected as shown. Figs. 2 and 3 (not shown), illustrate the application of the arrangement to the field circuits of a D.C. generator and an alternator. By providing a further Zener diode 4 and resistor 5 the arrangement may be connected to provide overcurrent protection. Reference has been directed by the Comptroller to Specification 1,005,261.

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