| 摘要 |
PROBLEM TO BE SOLVED: To provide a signal generator-corrector circuit using conventional type photo transistors for generating a high-quality output signal, and a signal correcting method for generating a constant output signal with a small allowable limit value. SOLUTION: The signal generator-corrector circuit comprises an LED diode D1 and a photo transistor Q1 having corresponding inputs and outputs and connection lines 1, 2 connected to current terminals A, B. The inputs and outputs (d1e, d1a and/or q1e, q1a) of the diode D1 and the photo transistor Q1 are connected to form a parallel circuit, a resistor R<SB>2</SB>is disposed on a photo transistor line 3 between the output (q1a) and a node K having the connection line 2, a resistor R<SB>1</SB>is disposed on the line 2 between the node K and the current terminal B, the base (q2b) of a transistor Q2 is connected to the output (q1a) or the photo transistor line 3, and a collector terminal (q2c) is connected to the connection line 1 via a resistor R<SB>3</SB>. COPYRIGHT: (C)2003,JPO
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