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Audible Spirit Level Indicator Circuit

Last Updated on February 6, 2021 by Admin Leave a Comment

audible spirit level compressed

This audible electronic spirit level circuit is extremely valuable for folks with hearing or vision imperfections. Not only that, but it is also useful for people who wish to align […]

Filed Under: Indicators Tagged With: Audible, Indicator, Level, Spirit

3 in 1 Circuit Fault Tester Circuit

Last Updated on January 11, 2021 by Admin Leave a Comment

3 in 1 tester circuit compressed

The 3 in 1 tester circuit explained in the following article is actually a combination of signal injector, signal tracer, and logic probe, which allows the user to accurately test […]

Filed Under: Indicators Tagged With: Fault, Tester

LED Sound Level Indicator Circuit

Last Updated on January 11, 2021 by Admin Leave a Comment

sound level 1 compressed

The proposed LED sound level meter will detect the sound hitting the MIC, and indicate its volume level through an array of LED, connected as a bar graph. Circuit Description […]

Filed Under: Indicators, Meter and Tester Circuits Tagged With: Indicator, LED, Level, Sound

Simple Crystal Tester Circuit

Last Updated on December 18, 2020 by Admin 4 Comments

crystal tester

The proposed simple crystal tester circuit can be used for accurately testing the operating frequency of any standard crystal, quickly. The figure below shows a crystal checker circuit schematic. In […]

Filed Under: Indicators Tagged With: Crystal, Simple, Tester

Loudspeaker Power Indicator Circuit

Last Updated on July 1, 2020 by Admin Leave a Comment

fig1 2

This circuit will reveal the height level of an input signal placed on a speaker. It is mainly meant as a fool proof device when linked to an amplifier of […]

Filed Under: Indicators Tagged With: Indicator, Loudspeaker, Power

3 LED Battery Monitor Circuit

Last Updated on May 15, 2020 by Admin Leave a Comment

battery monitor circuit

This battery monitor circuit can be used to monitor the charge level of a battery in 3 different steps, indicated by 3 separate LEDs. Just three LEDs are incorporated to […]

Filed Under: Indicators Tagged With: Battery, LED, Monitor

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