Car Chasing LED Arrow Turn Signal Indicator Circuit

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 4017 and an UJT for executing a very interesting two pattern LED light chasing on the connected LEDs, which produce an impression of creating an […]

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How to Test a SCR

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 below initializing the shown normally-open “on” push to ON button connects the gate to the anode, enabling current coming from the negative lead of the […]

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Automatic Light Circuit for Washroom  

  Building an automatic light for washroom is not at all complex. All you need to do is to follow the steps as described in this report to get the derived result. Using an automatic switch would help to save electricity. Moreover, the system is designed in a way to run on lesser power, thereby […]

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How to Build a Door Bell with Memory Circuit

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 an unplanned absence when a prospect is anticipated. Bafflement is the greatest upon these situations. The Door Bell with Memory circuit below really helps to […]

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