An emergency lamp using SMD LEDs is able to generate illuminations with extreme brightness due to the high efficiency of the SMD type LEDs. Moreover, SMD LEDs also ensure the unit will be very compact and lightweight. The following post explains a simple circuit diagram of an automatic emergency lamp using 36 nos. SMD LEDs. The circuit […]
Newly Updated Circuit Projects:
Battery Cut Off Charger Circuit Using a Single Relay
Amazed to hear this! Yep that’s actually possible, you would need only one relay and a handful of diodes to make a simplest one relay automatic battery charger circuit. How it Works The idea struck me while trying to design the easiest possible battery charger circuit for one my clients. The concept is simple; just […]
Introduction to Schmitt Trigger
Almost any digital circuit used in modern high-speed data communications needs some form of Schmitt trigger action on its inputs. Why Schmitt Trigger is Used The main purpose of a Schmitt trigger here is to eliminate noise and interference on data lines and provide a nice clean digital output with fast edge transitions. The rise […]
Simple Voltage-to-Current and Current-to-Voltage Techniques – By James H. Reinholm
There are many types of voltage-to-current and current-to-voltage converter circuits, and most of them use a combination of opamps and transistors to achieve a high level of accuracy. But when high accuracy isn’t necessary, a simple converter of this type can be made using just one or two resistors. Resistor as Voltage to Current Converter […]
Recovering Electricity from Air Using a Sec Excitor Coil
The following experiment shows how interestingly Mr.Steven could draw radiant energy from air using his home-built sec exciter coil tower, he used it to a feed a small LM317 power supply unit and made it work successfully. Read more… How to Wind the Inductors “When i hand wind my coils i didn’t use varnish its […]
Charging a Small NiMh Battery from Air
In this post we will try to investigate a circuit which can charge a small Ni-Mh battery by extracting radiant energy from the ether or air. I have explained more Discussing how to Derive Free 9V from Air – By Steven Chiverton Mr. Steven has devised an ingenious way of collecting energy from the air […]