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control Blocker -designed by Naveen P
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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.
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.
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