A simple flashing bicycle safety light circuit has been discussed in the following article In many occasions when we happen to go down the road at night, it is normal […]
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Make this Simple Refrigerator Door Open Alarm Circuit
This presented refrigerator door open alarm circuit which alerts you after a period of time whenever your refrigerator door is left open. This circuit becomes very handy, because in case […]
0 to 99 Digital Pulse Counter Circuits
The proposed 00-99 digital pulse counter becomes very handy in places where you need to keep the people organized in some specified order. Operating details of the digital counter As […]
How to Make a Barcode Security Lock Circuit
A simple barcode security lock circuit or barcode scanner circuit is explained in the following article using just a handful of ordinary components such as an op amp, an LDR […]
Model Locomotive Infrared Controller Circuit
The article discusses a model locomotive controller circuit using uniquely set IR beams for different locomotives allowing unique identification signals and controls for the engines. The idea was requested by […]
Solar Cellphone Charger Circuit
The article comprehensively discusses a MPPT based smart solar cell phone charger circuit. The idea was requested by one of the avid readers of this blog. Technical Specifications I am […]