Method of regulating resistance value in sensor circuit
AssigneeMitsumi Electric Co., Ltd.
InventorAtsushi Ono
Life of this patent
Estimating the term…
Abstract
In a pressure sensitive sensor circuit, a first conductive path has a first resistor which has a first resistance value and a second conductive path has a second resistor which has a second resistance value lower than the first resistance value of the first resistor and the second resistor is connected to the first resistor in series. A third conductive path has an open circuit which is connected to the second resistor in parallel. The open circuit of the third conductive path is short-circuited when a relationship between input pressure and output level in the pressure sensitive sensor circuit need to regulation of the resistance value in the pressure sensitive sensor.
Claims4
A method of regulating a resistance value in a pressure sensitive sensor circuit, comprising the steps of:
- providing a pressure sensitive sensor circuit including;
- a first conductive path having a first resistor which has a first resistance value;
- and
- a second conductive path having a second resistor which has a second resistance value lower than the first resistance value of the first resistor, and the second resistor connected to the first resistor in series;
- and
- a third conductive path having an open circuit which is connected to the second resistor in parallel;
- inspecting a relationship between input pressure and output level in the pressure sensitive sensor circuit;
- and
- short-circuiting the open circuit of the third conductive path based on the result of the inspection.
A sensor circuit comprising:
- a first resistor having a first resistance value;
- a second resistor having a second resistance value lower than the first resistance value of the first resistor, and connected to the first resistor in series;
- and
- an adjuster for regulating a resistance value in the sensor circuit, including a pair of lands separated from each other for a solder joinable distance, and the pair of lands connected to the second resistor in parallel.
A sensor circuit comprising:
- a first resistor having a first resistance value;
- a second resistor having a second resistance value lower than the first resistance value of the first resistor, and connected to the first resistor in series;
- and
- an adjuster for regulating a resistance value in the sensor circuit, including;
- a first land, branched from upstream of the second resistor;
- and
- a second land branched from downstream of the second resistor, and separated from the first land for a solder joinable distance.
A sensor circuit comprising:
- a first resistor having a first resistance value;
- a second resistor having a second resistance value lower than the first resistance value of the first resistor, and connected to the first resistor in series;
- and
- an adjuster for regulating a resistance value in the sensor circuit, including a closable switch which is connected to the second resistor in parallel.
Dependencies are inferred from the claim text.