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TV remote control Jammer Circuit – 555 IR Remote block

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TV remote control Blocker Circuit - IR Remote Control Jammer

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 4.7K 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.

Scheme remote control blocker with NE555

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Remote control jammer schematic

Suggested printed circuit board for mounting the circuit

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IR Remote control jammer PCB
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IR Remote control jammer PCB layout
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IR Remote control jammer PCB silk

Part list for assembly  TV remote control Blocker Circuit

Part Value
Resistor’s 1/4 Watt 5%
R1 1K -Brown, Black, Red, Gold
R2 470 – yellow, violet, brown, gold
R3 1.5K – Brown, Green, Red, Gold
R4 220 – Red, Red, brown, gold
Capacitor‘s
C1, C2 10nF – Polyester or Ceramic Capacitor
C3* Add a 100nF bypass capacitor in parallel with the 9-volt battery
Semiconductors
IC1 555 – Integrated circuit timer, can be NE555, LM555 or other prefix
2N3906 Q1
LED1, LED2 Infrared LEDs used in remote controls
Several
P1 Trimpot of 4.7K
Printed circuit board, 9v battery, battery clip, wires, soldering, box, etc.

Download PDF Files for Assembly the TV remote control Blocker Circuit
Download PDF      Mirror

2 COMMENTS

  1. I tried but the Infrared led is not Working I checked it with my mobile camerano use.But When i use an LED instead it light tiny.Plz Help

  2. Hello, I’m trying to build this circuit and I’m having a problem understanding how the potentiometer is connected in the circuit. I’ve played around with it but haven’t attained the right frequency as of yet.

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