Cell Phone Jammer Using IC555

A Simple Cell phone jammer using IC555.

GSM Controlled Robot

In the project the robot is controlled by a mobile phone that makes a call to the mobile phone attached to the robot. In the course of a call, if any button is pressed a tone corresponding to the button pressed is heard at the other end called ‘Dual Tone Multiple frequency’ (DTMF) tone.

8x8 Dotmatrix Scrolling LED Display

Here 64 leds which are connected to an Matrix display. The Anodes are drived through an Driver IC UDN2981 and the cathodes are drived through ULN2803. The Atmega8515 is used in this project to control the display. The microcontroller is programmed with Bascom AVR.

Infrared Remote Switch

A Simple Infrared remote control circuit.

Showing posts with label Strobe Light Circuit. Show all posts
Showing posts with label Strobe Light Circuit. Show all posts

Strobe Light Circuit

Schematic -

Parts List -
R1 - 1 - 10 Meg, 1/4 Watt Resistor
D1, D2 - 2 - 1N4003 Silicon Diode
C1, C2 - 2 - 10uF 350V Capacitor
C3 - 1 - 0.1uF 400 Volt Mylar Capacitor
T1 - 1 - 4KV Trigger Transformer (see "Notes")
FT - 1 - Flash Tube (see "Notes")
L1 - 1 - Neon Bulb
Q1 - 1 - 106 SCR
S1 - 1 - 115V 1A SPST Switch
MISC - 1 - Case, Wire, Line Cord

Notes -
1. This ciruits is NOT isolated from ground. Use caution when operating without a case. A case is required for normal operation. Do not touch any part of the circuit with the case open or not installed.

2. Most any diodes rated at greater then 250 volts at 1 amp can be used instead of the 1N4003's.


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Courtsy-simple-electronics.com

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