In the following post I have explained the main technical features and specifications of 3 watt white LEDs. I have explained more regarding their operating parameters and safe-operating limitations. Main Features Extreme luminosity capability […]
New Circuit Projects
Making a Cell Phone Controlled Remote Bell Circuit
The following circuit of a cell phone controlled remote bell can be used for ringing bells or alarm devices using your personal cell phone. The unit incorporates an attached cheap […]
Converting Ordinary Rice Bulb String Light to LED String Light
In this post we study how to convert a rice bulb string light into an LED string light using some simply circuit modification. Circuit Concept Whether it’s during a festive occasion or […]
How to Illuminate 1 Watt LEDs with Cell Phone Charger
Nowadays probably all of us have a spare cell phone charger lying idle in our cupboards or table drawers……so wouldn’t it be a great idea if we could employ it like a […]
Cell Phone Emergency Charger Pack using Ni-Cd Batteries
In this post I have explained the construction of a simple emergency charger pack using Nicket Cadmium (Ni-Cd) batteries for your cellphones and smart phones for emergency charging of your […]
How to Switch Two Batteries Manually using Opto Coupler
The following article explaining a dual battery changeover relay circuit was requested by Mr.Raja so that it could become possible to switch between his old and new inverter batteries automatically, eliminating manual interventions. Let’s […]
