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Road Diversion Warning Indicator using Running LED Lights

Last Updated on January 10, 2018 by Admin Leave a Comment

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The discussed LED lamp chaser circuit can be effectively used for indicating or warning road diversions or when a roadwork is in progress, especially in areas where street lamps are […]

Filed Under: Indicators

Thermal Indicator Circuit for Heatsinks

Last Updated on January 10, 2018 by Admin Leave a Comment

IMG 0047

The post details how to build a simple 3 LED thermal indicator circuit for heatsinks and other similar applications to quickly understand the level of heat on the selected surface […]

Filed Under: Indicators, Sensors and Detectors, Temperature Controller

Doorbell With Memory Circuit

Last Updated on July 26, 2019 by Admin Leave a Comment

IMG 0006

On occasion this could be helpful to understand when a potential user has visited your door steps as part of your absence. This is especially valid in the circumstance of […]

Filed Under: Indicators

Simple Temperature Indicator using BC547 Transistor

Last Updated on January 10, 2018 by Admin Leave a Comment

temp ind

The post explains a simple temperature indicator circuit using a single BC547 transistor and complementary 1N4148 diode. The temperature indication of a heat sink on a power transistor in high […]

Filed Under: Indicators, Sensors and Detectors

Car Chasing LED Arrow Turn Signal Indicator Circuit

Last Updated on January 10, 2018 by Admin 10 Comments

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A very simple yet interesting Chasing LED arrow car tun signal indicator circuit is discussed in this article. The circuit uses just a single 10 stage Johnson’s decade counter IC […]

Filed Under: Car and Motorcycle Projects, Indicators, Lights and Lamps

How to Test a SCR

Last Updated on January 10, 2018 by Admin Leave a Comment

scr test

In this post we learn how to test a SCR whether it’s good or bad using a couple of simple circuit implementations Simple SCR testing circuit Referring to the diagram […]

Filed Under: Indicators

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