ExpPara

Wide Range Exponential Converter

Courtesy/Thanks to: Osamu Hoshuyama

Description: Matched pair transistor with low Rbe is obtained.
Influence of Rbe with Q4 will be
negligible bacause current of Q4 is constant. Therefore, single tr is used here.

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Manufacturers

Osamu Hoshuyama
	houshu@muj.biglobe.ne.jp

Parts used

TD62501
	7 channel single driver, common emitter
TL072
	Low-Noise JFet-input Operational Amplifier

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