Universal Op-Amp Board for DIP-8 Package

Universal Op-Amp Board for DIP-8 Package

This is an easy to build and very useful project for hobbyists and students to learn and create op-amp-based projects. The board accommodates a single op-amp in DIP-8 package. The project provides the user with multiple choices and extensive flexibility for different applications...

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Microphone Preamplifier – Sound Sensor

Microphone Preamplifier – Sound Sensor

This is an easy to construct dual-stage microphone pre-amplifier. The project can be used as a sound sensor or microphone pre-amplifier. The 1st op-amp pre-amplify the very low-level signal coming from the condenser microphone and 2nd op-amp provides more boost to the audio signal....

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918
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Analog Light Sensor + Light Sensitive Switch using OPT101

Analog Light Sensor + Light Sensitive Switch using OPT101

You may have seen many light-sensitive switch circuits based on an LDR sensor. Usually, the sensitivity of the LDR based light sensor is poor. We wanted a very sensitive light switch hence we decided to make a circuit based on a light sensor rather than LDR. After a little research on...

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3143
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Optically Isolated Analog Input Module for Arduino

Optically Isolated Analog Input Module for Arduino

This is an isolated analog input module that is useful for interfacing Analog signals of various types originated from analog sensors and field devices. The module is very useful for in-process controls, factory automation, industrial applications, etc. Interfacing an analog voltage,...

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5470
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Liquid or Air Pressure Switch with Relay

Liquid or Air Pressure Switch with Relay

This pressure switch project is built using a piezoresistive transducer, LM358 OPAMP as comparator, and a relay. The circuit activate the relay when the pressure in a system exceed a given set-point. Basically, this switch can power ON or OFF a pump, valve, motor, when certain...

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2802
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