Electricity: motive power systems – Having plural – diverse or diversely controlled sources – Different voltages
Patent
1987-08-07
1988-11-29
Ro, Bentsu
Electricity: motive power systems
Having plural, diverse or diversely controlled sources
Different voltages
307 43, 307 54, 307 85, 318139, H02P 714
Patent
active
047884800
ABSTRACT:
A method of control and a control circuit for use in connecting all or sub-parts of a battery supply to a battery driven motor includes relays connected between a motor and each sub-part of a battery supply; a timer having a predetermined time period and which changes its output condition at the end of each time period; a motor speed selector for selecting either full motor speed or a portion thereof; and a switch arrangement which interconnects the relays, timer and motor speed selector. The switch arrangement provides for a first sub-part of the battery supply to be connected to the motor when the selector is in a less than full speed position and when the timer has one output condition. A second sub-part of the battery supply is connected to the motor when the selector is in a less than full speed position and the timer has a second output condition. The relays connect the full battery supply to the motor when the selector is in a full speed position.
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Field Bruce F.
Mason Richard A.
Waldhauser Steven J. A.
Ro Bentsu
Tennant Company
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