Скачать или смотреть Exponential Amplifier (AntiLog converter)

An exponential converter circuit also known as Antilogarithm amplifier is analyzed in this circuit video. ( For more examples see Analog/Digital Circuit Playlist:    • Electrical Engineering, Analog, Digital De...   )
This circuit is designed using two op amps and two bipolar junction transistors (BJT). In this video, It is shown that the output voltage of circuit is an exponential conversion of the input voltage scaled by coefficients defined by resistors and also thermal voltage VT. A combination of op amp virtual short, Kirchhoff current law (KCL), Kirchhoff voltage law (KVL) and BJT current-voltage Shockley equation of p-n junction is used to prove that this circuit operates as an exponential amplifier or Antilogarithm converter.