发明名称 |
Reference voltage generation circuit, drive circuit, light emitting diode head, and image forming apparatus |
摘要 |
A reference voltage generation circuit includes a current-mirror circuit formed of a plurality of MOS (Metal Oxide Semiconductor) transistors each having a source terminal connected to a power source and a gate terminal connected to with each other; and a plurality of transistors each connected to a drain terminal of each of the MOS transistors of the current-mirror circuit for controlling the current-mirror circuit, so that an output current of the current-mirror circuit is converted to a voltage to be output as a reference voltage. Each of the MOS transistors of the current-mirror circuit has the drain terminal connected to a collector terminal of each of the transistors. Accordingly, when a voltage of the power source varies, it is possible to maintain a collector voltage of each of the transistors at a specific level and a collector current of each of the transistors constant. |
申请公布号 |
US8400137(B2) |
申请公布日期 |
2013.03.19 |
申请号 |
US20080216741 |
申请日期 |
2008.07.10 |
申请人 |
NAGUMO AKIRA;OKI DATA CORPORATION |
发明人 |
NAGUMO AKIRA |
分类号 |
G05F3/16;G05F3/20 |
主分类号 |
G05F3/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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