| 摘要 |
PURPOSE:To obtain a circuit operated even with a large load at the output by adding two transistors (TR) of NPN and PNP TRs for transistors at the output terminal in a circuit used for impedance conversion or the like. CONSTITUTION:The base/emitter of the NPN TR 8 are connected to the collector/base of the TR 2 at the output terminal 7 in the buffer circuit, the collector is connected to a power supply VCC, the emitter/base of the PNP TR 9 are connected to the base/emitter of the TR 2 and the collector is connected to ground (GND). In the buffer circuit constituted in this way, when a load larger than a current 11 of a constant current source 5 is connected to the output, since the load current flows to said NPN TR 8 or the PNP TR 9, the circuit operation is attained even when a load larger than the current 11 is connected.
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