| 摘要 |
PURPOSE:To increase the output dynamic range, by extracting an output signal current from an inverted Darlington amplifier, folding it back to an earth potential side and folding it back again to a power supply voltage side with a constant current source. CONSTITUTION:When a signal current flows to a transistor(TR) 38, a signal current having opposite polarity and the same value as the former signal current flows to TRs 51, 34 and the signal current flows to the earth potential being folded back at the inverted Darlington amplifier. The signal current folded back to the earth potential flows by being folded back again to the power supply voltage side via a TR 33 with a constant power supply comprising a TR 35 and a resistor 56. |
