Experiments with LM358

Description: LM358 is also one of the types of operational amplifier. LM358 consists of two independent, high-gain, frequency-compensated operational amplifiers designed to operate from a single supply over a wide range of voltages.

This module can also be used for testing an LDR, a phototransistor and a photodiode. You just need to replace an LDR with phototransistor or photodiode, the circuit simply works. You can try this project using 741 IC also.

Download datasheet of LM358

You can get more LM358 projects from the following links:

Datasheet and projects

4017 and LM358

Project 1:  LDR and LM358

This is a simple dark sensor circuit. When you block light falling on LDR, the LM358 switches on the LED.

LM358-using-fritzing1

LDR

LDR-controlled-Automatic-light-with-LM358

Project 2: Photodiode and LM358

Remove LDR and insert a photodiode, it works instantly. Depending upon the light level of your room, you might have to adjust the variable resistor to adjust sensitivity of the circuit.

photodiode

Photodiode-controlled-Automatic-light-with-LM358

Project 3: Phototransistor and LM358

Remove LDR and insert a phototransistor, it works instantly. Depending upon the light level of your room, you might have to adjust the variable resistor to adjust sensitivity of the circuit.

phototransistor

Phototransistor-controlled-Automatic-light-with-LM358

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