Schematics > Games and entertainment > TV remote control Blocker
TV remote control Blocker
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.
Title: TV remote control Blocker
Source: www.electronic-circuits-diagrams.com
Published on: 2005-02-01
Reads: 852
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