In this article we learn two very useful school bell timer circuits which can be used for ringing school bell automatically for each period as per the set time duration. […]
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10 Simple LED Chaser Circuits Explained [Knight Rider, Scanner, Reverse-Forward, Cascaded]
The article discusses the construction of 10 interesting yet simple LED chaser circuits, which not only create beautiful running light effect but are also easy to build. We also discuss […]
Simple Buck-Boost Converter Circuits Explained
The post explains s few simple DC to DC buck-boost converter circuits which can be used for either stepping up the input DC voltage or stepping down the input DC […]
Car Speed Limit Warning Indicator Circuit
The following post describes a simple yet useful car speed limit warning indicator circuit which can be used in vehicles for getting an instant indication of a possible over speed […]
Low Battery Indicator Circuit Using Two Transistors Only
The following post describes a simple low battery indicator circuit by using just two inexpensive NPN transistors. The main feature of this circuit is its very low stand by current […]
Car Turn Signal Flasher Circuit with Lamp Malfunction Indicator
The post discusses an automotive/car turn signal indicator circuit idea with a built-in load malfunction indicator, meaning an additional LED lamp fitted on the dashboard which would warn if any of the side indicators […]