This explained simple emergency lamp circuit includes a built-in charger which charges a nickel-cadmium battery through the input AC mains in order to get a standby power for emergency lighting […]
3 LED Running Light Circuit
In this post we learn how to make a running light or chasing light effect using only 3 LEDs, because 3 LEDs are the minimum number required for creating a […]
Designing Large LED Dispay Circuit
First of all, this project will not seem interesting to every reader. But, this has many possible applications. This is a seven segment display, with a diameter of 280x140mm. The […]
Mini Running Light Circuit
The post explain how to make a simple mini running light circuit using a couple of ICs 555 and UAA170 As the figure shows, the UAA170 circuit is being used […]
How to Calculate Current Limiting Resistors for LED
The post explains a simple way to calculate and implement current limiter resistor for an LED in a circuit in order to ensure that the LED never get damages due […]
Coffee Temperature Indicator Circuit
In this post we will build a circuit that can be used for identifying and alerting the user regarding the right temperature of the coffee. The LED indicators will indicator […]