TV remote control Jamming circuit


Posted on Mar 11, 2013

Just point this small device at the TV and the remote gets jammed . The circuit is self explanatory . 555 is wired as an astable multivibrator for a frequency of nearly 38 kHz. This is the frequency at which most of the modern TVs receive the IR beam . The transistor acts as a current source supplying roughly 25mA to the infra red LEDs. To increase the range of the circuit simply decrease the value of the 180 ohm resistor to not less than 100 ohm. It is required to adjust the 10K potentiometer while pointing the device at your TV to block the IR rays from the remote. This can be done by trial and error until the remote no longer responds.


TV remote control Jamming circuit
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

MAXQ7667 16-Bit RISC Microcontroller-Based Ultrasonic Distance-Measuring System
Optical Heart Rate Monitor
GlueLogix Technical Services
Precision digital timing controller circuit (CC4013, CC440, CC4060, G1555)
High voltage (120V), converting familiar fast (120V Shu us) power MOSFET Amplifier circuit



Top