Log And Antilog Amplifier Circuit Diagram. It is well known that some processes such as multiplication and division can be performed by addition and subtraction of logs. Basic antilog amplifier using diode.

Basically it performs mathematical operation of an anti logarithm. This chapter discusses about the logarithmic amplifier and anti logarithmic amplifier in detail. The circuit of an antilog amplifier.

It is well known that some processes such as multiplication and division can be performed by addition and subtraction of logs.

The circuit diagram of logarithmic amplifier is as shown below logarithmic amplifier it is obvious from the circuit shown above that negative feedback is provided from output to inverting terminal using the concept of virtual short between the input terminals of an opamp the voltage at inverting terminal will be zero volts since the non inverting terminal of opamp is at ground potential. Where vref is the constant of normalisation and k is the scale factor. The circuit diagram of logarithmic amplifier is as shown below logarithmic amplifier it is obvious from the circuit shown above that negative feedback is provided from output to inverting terminal using the concept of virtual short between the input terminals of an opamp the voltage at inverting terminal will be zero volts since the non inverting terminal of opamp is at ground potential. 3 3 5 log and antilog amplifiers.