发明名称 |
Transistor drive circuit with shunt transistor saturation control |
摘要 |
A drive transistor has its base coupled to a circuit input and its collector coupled to provide an output current at a circuit output. The output current is responsive to a base current received at the base of the drive transistor. A voltage induced across a resistor connected between the circuit input and the base of the drive transistor indicates the amount of drive transistor base current. A portion of an input current presented at the circuit input is diverted to the circuit output based on the indicated amount of drive transistor base current. The remaining portion of the input current is provided as the drive transistor base current. The drive transistor is thus prevented from saturating.
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申请公布号 |
US5481216(A) |
申请公布日期 |
1996.01.02 |
申请号 |
US19940251389 |
申请日期 |
1994.05.31 |
申请人 |
NATIONAL SEMICONDUCTOR CORPORATION |
发明人 |
YEUNG, PAK-HO |
分类号 |
H03K17/0414;(IPC1-7):H03K17/04;H03K3/33 |
主分类号 |
H03K17/0414 |
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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