DIY KIT 51- LM358 based heat and light sensor

This is yet another project based on LM358.  The LM158 series consists of two independent, high gain, internally frequency compensated operational amplifiers which were designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage. (more…)

DIY KIT 50- LM358 breathing LED circuit

This is a basic electronic kit based on LM358.  The LM158 series consists of two independent, high gain, internally frequency compensated operational amplifiers which were designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage. (more…)

DIY KIT 48- Flame sensor

This is a basic electronic kit for beginners. The kit is based on LM358, an operational amplifier and works as a flame sensor.

The schematic of the kit:

Check out the images below to get tips for assembling the kit. You can see the images on Flickr also.

Other images

 

Preamplifier for electret microphone with LM358 opamp

It’s a simple project to build a stereo preamplifier using electret microphones and the cheap operational amplifier LM358. In the past, we have made few projects comprising LM358, you can check them here

This project uses the dual-channel operational amplifier LM358. Each channel is used to increase the signal of one electret microphone and it helps to manage a stereo output.

To build this project you will need:

  • LM358 x 1
  • Electret Microphones x 2
  • Resistors 10K x 8
  • Resistors 47K x 2
  • Electrolytic Capacitor 10uf x 2
  • Electrolytic Capacitor 220uf x 2 (or 10uf x2  depending on noise)
  • 2 pin Header x 2 (or minijack or any connector you want)
  • 1 Stereo minijack (3.5) female connector (the output connector)
  • Battery Holder (you can use any power supply between 5V and 32V. We have used a 6V power supply.

This project is based on a tutorial published at Fritzing and we are sharing this under creative commons license.

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.

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. (more…)

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