Voltage control for battery powered motor or the like
First Claim
1. A control circuit for use in connecting all or subparts of a battery supply to a battery driven motor, including:
- relay means connected between a motor and each sub-part of a battery supply,timing means having a predetermined time period and which changes its output condition at the end of each timing period,a motor speed selector for selecting full motor speed or a portion thereof,switch means interconnecting said relay means, timing means and motor speed selector whereby;
said relay means are operable in a first position to connect a first sub-part of the battery supply to the motor when said selector is in a less than full speed position and with said timing means having a first output condition;
said relay means are operable in a second position to connect a second sub-part of the battery supply to the motor when said selector is in a less than full speed position and with said timing means having a second output condition;
said relay means are operable in a third position to connect the full battery supply to the motor when said selector is in a full speed position.
1 Assignment
0 Petitions
Accused Products
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.
-
Citations
8 Claims
-
1. A control circuit for use in connecting all or subparts of a battery supply to a battery driven motor, including:
-
relay means connected between a motor and each sub-part of a battery supply, timing means having a predetermined time period and which changes its output condition at the end of each timing period, a motor speed selector for selecting full motor speed or a portion thereof, switch means interconnecting said relay means, timing means and motor speed selector whereby; said relay means are operable in a first position to connect a first sub-part of the battery supply to the motor when said selector is in a less than full speed position and with said timing means having a first output condition; said relay means are operable in a second position to connect a second sub-part of the battery supply to the motor when said selector is in a less than full speed position and with said timing means having a second output condition; said relay means are operable in a third position to connect the full battery supply to the motor when said selector is in a full speed position. - View Dependent Claims (2, 3, 4)
-
-
5. A control circuit for use in connecting all or either half of a battery supply to a battery driven motor, including:
-
relay means connected between a motor and each half of a battery supply, a timer with two output conditions, including a counter, memory and power supply, with the output of the timer changing from one output condition to the other at the end of each time period determined by a predetermined accumulated count in the memory, a motor speed selector for selecting high speed or low speed, switch means interconnecting said relay means, timer and motor speed selector whereby; said relay means are operable in a first position to connect one half of the battery supply to the motor when the selector is in a low speed position and with said timer having said one output condition; said relay means are operable in a second position to connect the other half of the battery supply to the motor when the selector is in a low speed position and with the timer having the other of its two output conditions; said relay means are operable in a third position to connect the full battery supply to the motor when said selector is in a full speed position. - View Dependent Claims (6)
-
-
7. A method of controlling the supply of all or sub-parts of a battery voltage to a battery driven motor including the steps of:
-
connecting the full battery voltage to the battery driven motor when full speed is selected for the motor, connecting a first sub-part of battery voltage to the motor when less than full speed is selected, timing the period of battery voltage first sub-part use when less than full speed is selected and maintaining use of the first battery sub-part for a predetermined period of time, which time period is continuous if selection of less than full motor speed is continuous and which time period is discontinuous if selection of less than full motor speed is discontinuous. - View Dependent Claims (8)
-
Specification