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    Dual battery charger having dual output
    2.
    发明授权
    Dual battery charger having dual output 失效
    双电源双电池充电器

    公开(公告)号：US3624480A

    公开(公告)日：1971-11-30

    申请号：US3624480D

    申请日：1970-11-12

    Applicant: GEN MOTORS CORP

    Inventor： CAMPBELL ROBERT W ,  CUMMINS DONALD L

    IPC: H02J7/14 ,  H02J7/10 ,  H02J7/24

    CPC classification number: H02J7/1423

    Abstract: First and second batteries are connected in series between a point of constant reference potential and the output terminal of a first full-wave bridge rectifier. The output terminal of a second full-wave bridge rectifier comprising silicon-controlled rectifiers (SCR) is connected to a junction between the batteries. The respective legs of the first and second rectifiers are each connected to the same output winding of the stator of an alternator. A first voltage detector responsive to the voltage across the first and second terminals causes the SCR''s to be nonconductive when the voltage across the first and second terminals is less than a first predetermined voltage. A second voltage detector controls the current through the field winding of the alternator in response to the voltage at the junction between the batteries to maintain a second predetermined voltage thereat. The drop in current and therefore voltage at the junction occurring an instant after the SCR''s are rendered nonconductive causes the second voltage detector to increase the current and voltage at the first output to increase by an amount sufficient to reestablish the second predetermined voltage at the junction.

    Dual voltage system
    4.
    发明授权
    Dual voltage system 失效
    双电压系统

    公开(公告)号：US3667025A

    公开(公告)日：1972-05-30

    申请号：US3667025D

    申请日：1971-06-21

    Applicant: GEN MOTORS CORP

    Inventor： CAMPBELL ROBERT W ,  CUMMINS DONALD L

    IPC: H02J7/00 ,  H02J7/14

    CPC classification number: H02J7/1423 ,  H02J7/0018

    Abstract: Two 12-volt batteries are connected in series across the output of a 24-volt charging system, and a DC to DC converter is connected between the output of the charging system and a junction between the batteries. To maintain equal voltages across both batteries, the voltage at the junction is compared with a reference voltage by a voltage regulator that is operatively connected with a DC to DC converter to maintain a regulated output therefrom to the junction.

    Abstract translation: 两个12伏电池串联连接在一个24伏充电系统的输出端，直流到直流转换器连接在充电系统的输出端和电池之间的连接处。 为了在两个电池之间保持相等的电压，通过与DC-DC转换器可操作地连接的电压调节器将结处的电压与参考电压进行比较，以将调节的输出保持在连接处。

    Electric cranking motor automatic disconnect and lockout circuit
    6.
    发明授权
    Electric cranking motor automatic disconnect and lockout circuit 失效

    公开(公告)号：US3628041A

    公开(公告)日：1971-12-14

    申请号：US3628041D

    申请日：1970-11-23

    Applicant: GEN MOTORS CORP

    Inventor： CUMMINS DONALD L ,  ESCHE MORRIS ,  CAMPBELL ROBERT W

    IPC: F02N11/08 ,  F02N11/00

    CPC classification number: F02N11/0848 ,  F02N11/105

    Abstract: An electric cranking motor automatic disconnect and lockout circuit. The normally open contacts of a cranking motor solenoid operated switch are connected in series with the electric cranking motor across a source of direct current supply potential. Upon the closure of an electric switch, the source of direct current supply potential, applied across the gate-cathode electrodes of a first silicon controlled rectifier, triggers this device conductive through the anode-cathode electrodes to establish a circuit for base-emitter current flow through a first transistor. The conductive first transistor establishes an energizing circuit for the operating coil of an electric relay which, in turn, establishes an energizing circuit for the operating coil of the solenoid operated switch. The output potential of an electrical generator driven by the cranking motor armature is applied across the gate-cathode electrodes of a second silicon controlled rectifier. When the generator output potential is of sufficient magnitude to produce gate-cathode current through the second silicon controlled rectifier, the resulting anode-cathode current flow therethrough shunts base current from the first transistor to extinguish this device, thereby interrupting the energizing circuit for the operating coil of the electric relay and, in turn, the solenoid operated switch to provide automatic disconnect of the cranking motor upon engine start. A vibration transducer mounted upon the cranked engine produces an alternating current potential signal which triggers a second transistor conductive to shunt gate current from the first silicon controlled rectifier thereby preventing the retriggering of the first transistor while the engine is running to provide a lockout of the cranking motor.

    Generator voltage regulator
    7.
    发明授权
    Generator voltage regulator 失效
    发电机电压调节器

    公开(公告)号：US3609514A

    公开(公告)日：1971-09-28

    申请号：US3609514D

    申请日：1970-07-27

    Applicant: GEN MOTORS CORP

    Inventor： NOWAKOWSKI ROBERT J ,  CAMPBELL ROBERT W ,  MARTIN RONALD A

    IPC: H02J7/16 ,  H02J7/24 ,  H02P9/30

    CPC classification number: H02J7/247 ,  H02J7/16 ,  H02P9/305 ,  Y02T10/92

    Abstract: A voltage regulating system which is capable of controlling the output voltage of an alternating current generator which has a permanent magnet field, a main field winding and a reverse field winding. The voltage regulator utilizes thyristors or controlled rectifiers connected in a full-wave circuit with a plurality of diodes. The main field of the generator is connected across the direct current output terminals of the bridge circuit and its energization is controlled in accordance with the conduction of the controlled rectifiers. The reverse field winding of the generator is connected in series with another controlled rectifier having its gate-cathode circuit connected across the anode-cathode circuit of one of the controlled rectifiers of the bridge circuit. With this arrangement the controlled rectifier connected with the reverse field winding is biased conductive when the bridge controlled rectifiers are biased nonconductive and this controlled rectifier is biased nonconductive when the bridge controlled rectifiers are biased conductive. The conduction of the bridge controlled rectifiers is controlled by a circuit which senses the output voltage of the generator.

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