Audio Distortion Meter
Audio Distortion Meter An audio distortion meter is used to measure distortions in, yes you guessed it right, audio. At certain frequencies the sound from most audio devices distorts, they become unclear. Of course, the frequencies and the level of distortions vary from device to device. A distortion meter helps to find the level of distortions as well as the frequencies at which the output audio goes under such a condition. The aim of our project is to create... read more
Audio Wattmeter Circuit
Audio Watt Meter How do you measure the power output of an amplifier? using an Audio Wattmeter. the name Audio Watt Meter’ is a collective name for all devices that are used to measure the output of an amplifier, so many kinds of equipment fall under this category. What we intend in this project is to create a simple circuit that can measure the output of any amplifier devices. Description This is an easy trick to measure the output... read moreVoltmeter circuit using LED
Car Battery Voltmeter Circuit Description The main onjective of the car batter voltmeter circuit using LED is to work as a warning inducator using a voltmeter circuit to test the life of car batteries. A voltmeter, though can be bought from a store, is designed as a circuit to make the whole arrangement a lot more interesting. A voltmeter is basically a testing device that is used to measure the potential difference between two points of either AC or... read moreInfraRed (IR) Sensor/Detector Circuit
InfraRed (IR) Sensor/Detector Circuit Description The IR circuit described below is mainly designed for liquid level detection or proximity detection. The IR sensors used here are an IR LED and an IR photo diode. The circuit operates by detecting the distance from the target by reflection of an infrared beam. The biggest advantage of this circuit is that there is no physical contact with the liquid whose level is to be measured. Such a circuit needs to be installed only... read more
Simple Water Level Indicator
Water Level Indicator Description This is the circuit diagram of a simple corrosion free water level indicator for home and industries. In fact, the level of any conductive non-corrosive liquids can be measured using this circuit. The circuit is based on 5 transistor switches. Each transistor is switched on to drive the corresponding LED when its base is supplied with current through the water through the electrode probes. One electrode probe is (F) with 6V AC is placed at... read more
Audio Sound Level Meter
Sound Level Meter Circuit What is a sound level meter? A sound level meter is a handy equipment used to display sound levels. There are wide ranges of these devices; some show a digital numerical output of how many decibels of sound is created while some other shows a bar graph indicator (the decibel meter you see in mission impossible 1 movie). Here in this project, we are going to construct a sound level meter which displays a bar graph... read moreLED Thermometer for Temperature Measurement
LED Thermometer – Temperature Measurement Circuit This is a simple electronic project suitable for everyone. This project is about making a LED bar graph thermometer using two ICs, one for the sensor. What is a bar graph thermometer? A bar graph thermometer is one which shows temperature reading using an array of LEDs instead of a digital numerical output. Here this project has 10 LED lights which indicate temperatures ranging from 60 to 80 degree F. They are arranged in a... read more