| 摘要 |
A silicon controlled rectifier (SCR) lamp supply circuit for controlling the amount of rectified voltage delivered to illumination lamps in a document image capturing system includes electronic components for linearizing the transfer function of the circuit to reduce complexity and promote operating stability. The circuit delivers an output voltage to the illumination lamps to within 0.1 volt of a chosen voltage for the lamps and quickly responds to changes in load voltage demand.
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