This really is a RF jammer planned for the U.S. 800 MHz cellular phone band (870-895 MHz). This performs by providing an extreme sweeping RF carrier on the cell phone […]
How to Make a Digital Stop Watch Circuit
Presented below we shall analyze a digital stop watch design designed around the quite popular IC LM555 together with a 4-digit counter IC with multiplexed 7-segment output drivers (MM74C926). IC […]
How to make a Simple Digital Clock Circuit Explained
The digital time clock discussed the following is a circuit which most electronic amateurs would like to generate. Maybe you have found out about digital clocks produced from clock ICs […]
RF Field Strength Meter Circuit
The circuit can be used to measure the strength of a radio frequency ( RF) emitted from a transmitter. This is an exceptionally simple RF Field Strength Meter circuit. The main […]
Simplest Transistor Running Light Circuit for Christmas Lighting Decoration
This simple transistorized running light circuit can be used to produce sequential LED light chasing effect without using an IC. The drawing underneath represents a multistage light chaser utilizing just […]
40 LED Bicycle Light Circuit
A simple bicycle flashing light circuit using LED arrays is explained below, which will produce decorative, alternate flashing effect on the connected LEDs. The 555 circuit design below is a […]