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US 2003/0112641 A1Published application
Photocoupler semiconductor device
OwnerAkira Kanekoinventor
Life of this patent
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Abstract
A photocoupler semiconductor device comprises a light receiving device (12) for generating electric current; a control circuit (16); and a constant current circuit (14) having a resistor (20′) for detecting the generated current to provide the control circuit (16) with a current command. The resistor (20′) allows the electric current to increase with the amount of current received.
Claims6
A photocoupler semiconductor device comprising:
- a light receiving device;
- a control circuit connected to said light receiving device;
- and
- a constant current circuit connected between said light receiving device and said control circuit and having a resistor with its resistance decreasing as an amount of light received increases.
1 more element
Dependencies are inferred from the claim text.