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US 9,287,810 B2Granted
Motor control circuit
AssigneeMakita Corporation
InventorMotohiro Omura
Life of this patent
Estimating the term…
Abstract
In a motor control circuit, a switching element such as an FET for controlling a motor current and a current detection element for detecting the motor current are connected in series. One terminal of a temperature detection element is electrically connected to an electrical connecting section between the FET and the current detection element, and the other terminal of the temperature detection element is electrically connected to a temperature detection circuit.
Claims11
A motor control circuit, comprising:
- a switching element that controls a motor current;
- a current detection element that detects the motor current, the current detection element connected to the switching element in series;
- a temperature detection element configured to detect a temperature of the switching element and a temperature of the current detection element;
- and
- a temperature detection circuit, wherein:
- a first terminal of the temperature detection element is electrically connected to an electrical connecting section between the switching element and the current detection element;
- and
- a second terminal of the temperature detection element is electrically connected to the temperature detection circuit.
5 more elements
Dependencies are inferred from the claim text.