TV remote control Blocker - Techwatch Support Forums: Digital & Satellite TV, FTA, Cable, Computers, Mobile Phones, Apple and General Tech Forums

the insaan · 06-03-06, 10:51 PM

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.

jakeyfly · 06-03-06, 11:35 PM

thanks, this will come in handy:devious:

nathan123 · 07-03-06, 11:34 PM

I see how the good old 555 is used for nearly everything, this could be quite useful

06-03-06, 10:51 PM	#1 (permalink)
the insaan The Village Idiot Join Date: Sep 2005 Location: Burnley Posts: 1,616 Thanks: 136 Thanked 102 Times in 65 Posts	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. __________________

06-03-06, 11:35 PM	#2 (permalink)
jakeyfly Super Drunk Moderator Join Date: Oct 2005 Posts: 209 Thanks: 0 Thanked 0 Times in 0 Posts	Re: TV remote control Blocker thanks, this will come in handy:devious:

07-03-06, 11:34 PM	#3 (permalink)
nathan123 Senior Member Join Date: Dec 2005 Posts: 127 Thanks: 0 Thanked 4 Times in 4 Posts	Re: TV remote control Blocker I see how the good old 555 is used for nearly everything, this could be quite useful