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Indicator Circuits

Music Level LED Indicator Circuit

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

This tutorial help to make Music Level LED Indicator Circuit Light which turn on again and again when music volume goes up or down. Light move like wave when music get loud fast. This article tell how circuit work and what parts we need for make it. What is a Music Level LED Indicator Circuit: […]

Filed Under: Indicator Circuits, LED and Lamps

Simple Temperature Indicator Circuit using a Single Transistor

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

To make a Simple Temperature Indicator Circuit using a Single Transistor is not so hard like people think. This article tell how anyone can build this easy circuit using one diode, one transistor and some other small parts. What is a Temperature Indicator Circuit using a Single Transistor: Using one transistor, temperature indicator circuit is […]

Filed Under: Indicator Circuits, Transistor Circuits

Water Level Indicator Circuit

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

This Water Level Indicator Circuit is a small project to show water level in tank by using 4 LED lights. Each LED tell how much water is inside the tank. When water goes up more LED turn ON. It is easy to make and uses cheap parts. This circuit is good for saving water and […]

Filed Under: Indicator Circuits, LED and Lamps

IC LM35 Temperature Indicator Circuit

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

This IC LM35 Temperature Indicator Circuit is small and easy circuit. It uses LM35 chip to check temperature. There are no need of many parts and no need of difficult microcontroller. LED light turn ON when it become too hot or too cold which depend on how we set it. No need of big computer […]

Filed Under: Indicator Circuits

Battery Voltage Level Indicator Circuit using 3 LED

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

Battery Voltage Level Indicator Circuit using 3 LED is small circuit to show battery voltage with 3 LED One LED for low, one for medium and one for full charge. It helps to know battery is good or need charging. This circuit is easy to make and can be used for 12V battery but with […]

Filed Under: Indicator Circuits, LED and Lamps

How to Build a Two LED Temperature Indicator Circuit

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

This article show How to Build a Two LED Temperature Indicator Circuit which is easy and cool project. This circuit is used for many thing like: To check water shower when it is not too hot so no damage can happen Be sure computer parts, amplifier, heater and even car water tank do not get […]

Filed Under: Indicator Circuits, LED and Lamps

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