Calibrated logarithmic amplifier

105

02:17:12

Vout = ln (Vin), where ln() is the natural logarithm. When Vin = 1 V, Vout = 0 V. When Vin = 3 V, Vout = ln(3) V. When Vin = 1/3 V, Vout = - ln(3) V.

published 7 years ago

kiani

7 years ago

Thank you.

stanislav_maslovski

7 years ago

You are welcome!

jason9

7 years ago

This is clearly logarithmic and with a base pretty close to e. In other words, a decent approximation of the natural logarithm.

Leifuroz

7 years ago

I have a question. How do you put the input as a ramp? I only can put it as a DC or sinusoid or a step train.

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