What is a Log Amplifier? | Logarithmic Amplification with Op-Amp

Описание: Understand the concept of Log Amplifier (Logarithmic Amplifier) in the simplest way!

A log amplifier is an electronic circuit in which the output voltage is proportional to the logarithm of the input voltage.
This circuit uses an operational amplifier, diode, and resistor to achieve logarithmic behavior.
It has high input resistance and very low output impedance, making it useful in many electronics applications.

🔹 Why diode is used?
It provides the logarithmic feedback required for the circuit.

🔹 Want an antilog amplifier?
Just replace the diode with a resistor for exponential behavior.

The V–I characteristics of the diode give a straight-line graph with slope 2.303 KT/q, forming the basis of log amplification.

Perfect for Electronics, Physics, and Engineering students.

If you like the explanation, please subscribe .

log amplifier
logarithmic amplifier
log amplifier using opamp
log amplification circuit
logarithmic amplifier using op amp
log amp electronics
log amplifier working
op amp log amplifier
diode log amplifier
antilog amplifier
electronics practical
analog electronics
BSc physics electronics
logarithmic circuit explanation
log amp formula
opamp circuits basics
Output voltage is proportional to the logarithm of the applied input voltage.
To design the circuit of log amplifier opamps, diode, resistor are used.


#electronics #logarithmicamplifier #logamplifier

Thank you 💙