Engineers Garage

  • Electronic Projects & Tutorials
    • Electronic Projects
      • Arduino Projects
      • AVR
      • Raspberry pi
      • ESP8266
      • BeagleBone
      • 8051 Microcontroller
      • ARM
      • PIC Microcontroller
      • STM32
    • Tutorials
      • Audio Electronics
      • Battery Management
      • Brainwave
      • Electric Vehicles
      • EMI/EMC/RFI
      • Hardware Filters
      • IoT tutorials
      • Power Tutorials
      • Python
      • Sensors
      • USB
      • VHDL
    • Circuit Design
    • Project Videos
    • Components
  • Articles
    • Tech Articles
    • Insight
    • Invention Stories
    • How to
    • What Is
  • News
    • Electronic Product News
    • Business News
    • Company/Start-up News
    • DIY Reviews
    • Guest Post
  • Forums
    • EDABoard.com
    • Electro-Tech-Online
    • EG Forum Archive
  • DigiKey Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • Learn
    • eBooks/Tech Tips
    • Design Guides
    • Learning Center
    • Tech Toolboxes
    • Webinars & Digital Events
  • Resources
    • Digital Issues
    • EE Training Days
    • LEAP Awards
    • Podcasts
    • Webinars / Digital Events
    • White Papers
    • Engineering Diversity & Inclusion
    • DesignFast
  • Guest Post Guidelines
  • Advertise
  • Subscribe

IR to RF Converter

By Ashutosh Bhatt May 16, 2014

Here we have presented a simple circuit using which you can convert IR signal into RF signals and at the same time transmit this to remote location and decode them using a compatible RF receiver. With help of this circuit you can increase the range of the device you are controlling up to 200 meters

[[wysiwyg_imageupload:12341:]]

Fig. 1: Prototype of IR to RF Converter Circuit on Breadboard


Here we have presented a simple circuit using which you can convert IR signal into RF signals and at the same time transmit this to remote location and decode them using a compatible RF receiver. With help of this circuit you can increase the range of the device you are controlling up to 200 meters.

We all control our devices like TV, VCR, DVD player, air-conditioners and many other electronic devices with help of remote. In this we are controlling our devices by sending and receiving coded IR signals. The mostly used code format here is RC5. The main disadvantage of this code or remote is that it can operate in small range of 5 meters approx.

Therefore, if you want to increase the range of the device to control then circuit is very useful for you. With the help of this circuit you can convert these coded signals into RF signals and decode them at receiver side. This will increase the range of the device to be controlled about 200 meters.

In this circuit we are using 433.92Mz transmitter and receiver module. We are using TSOP1738 to detect the IR signal at receiver module. The code to be detected is feed to the pin 2 that is data pin of 433.92 Mz transmitter section. The RF transmitter is an AM/ASK transmitter having power output of 16Db approx. at 5V power supply.

Now signals which are transmitted are decoded at receiver end by receiver module. For testing we can use any remote of TV, DVD player or of your AC which must work on 433.92 Mz frequency. Now press any button you will see that initially LED connected with the transistor T1 is ideal and when you press any button on remote and it will start blinking. This indicates that coded pulse train has been received.

Be careful while using the 433.92 Mz transmitter and receiver modules because different companies have different pin configuration. So before using or connecting it with the circuit refers to its datasheet carefully otherwise it will destroy your module.

And also check that TSOP you are using is also compatible with the remote you are using means they both will work on same frequency otherwise it will not work. You can check it with the help of circuit diagram below-

ir to rf

Fig. 2: Circuit Diagram Showing working of TSOP

ir to rf

Fig. 3: Pin Configration Of TSOP

Give power supply to pin 2 with the help of resistor and ground pin 1. Set your multi-meter in voltage range at 20V. Now put positive terminal of your multi-meter on pin 3 of TSOP1738 and ground the other end of multi-meter. Now whenever you press any button on remote you will see variation in multi-meter reading. If this phenomenon is happening then you can say your TSOP1738 is responding to 38 kHz frequency because most of the remote work on this frequency.

Circuit Diagrams

circuit_12

Project Components

  • Capacitor
  • LED
  • Resistor
  • Transistor BC547

Project Video


Filed Under: Electronic Projects
Tagged With: ir, rf
 

Next Article

← Previous Article
Next Article →

Questions related to this article?
👉Ask and discuss on EDAboard.com and Electro-Tech-Online.com forums.



Tell Us What You Think!! Cancel reply

You must be logged in to post a comment.

EE TECH TOOLBOX

“ee
Tech Toolbox: 5G Technology
This Tech Toolbox covers the basics of 5G technology plus a story about how engineers designed and built a prototype DSL router mostly from old cellphone parts. Download this first 5G/wired/wireless communications Tech Toolbox to learn more!

EE Learning Center

EE Learning Center
“engineers
EXPAND YOUR KNOWLEDGE AND STAY CONNECTED
Get the latest info on technologies, tools and strategies for EE professionals.

HAVE A QUESTION?

Have a technical question about an article or other engineering questions? Check out our engineering forums EDABoard.com and Electro-Tech-Online.com where you can get those questions asked and answered by your peers!


RSS EDABOARD.com Discussions

  • connector model question
  • Color Laser printer, printing pcb layout on transparant sheet
  • Snooping Around is All
  • Industrial Relay Board Design for Motorcycle Use
  • Research on challenges in Analog Layout design

RSS Electro-Tech-Online.com Discussions

  • Faulty heat air gun (dc motor) - problem to locate fault due to Intermittent fault [unrepairable]
  • using a RTC in SF basic
  • Dismantling a WestinghouseRoku TV ?
  • Does US electric code allow branching ?
  • My Advanced Realistic Humanoid Robots Project

Featured – LoRa/LoRaWan Series

  • What is the LoRaWAN network and how does it work?
  • Understanding LoRa architecture: nodes, gateways, and servers
  • Revolutionizing RF: LoRa applications and advantages
  • How to build a LoRa gateway using Raspberry Pi
  • How LoRa enables long-range communication
  • How communication works between two LoRa end-node devices

Recent Articles

  • How IoT network topologies work
  • The top five AI startups to watch in 2025
  • STMicroelectronics unveils SoC based on secure MCU
  • Nexperia’s 48 V ESD diodes support higher data rates with ultra-low capacitance design
  • Taoglas releases Patriot antenna with 18 integrated elements covering 600 to 6000 MHz

EE ENGINEERING TRAINING DAYS

engineering

Submit a Guest Post

submit a guest post
Engineers Garage
  • Analog IC TIps
  • Connector Tips
  • Battery Power Tips
  • DesignFast
  • EDABoard Forums
  • EE World Online
  • Electro-Tech-Online Forums
  • EV Engineering
  • Microcontroller Tips
  • Power Electronic Tips
  • Sensor Tips
  • Test and Measurement Tips
  • 5G Technology World
  • Subscribe to our newsletter
  • About Us
  • Contact Us
  • Advertise

Copyright © 2025 WTWH Media LLC. All Rights Reserved. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media
Privacy Policy

Search Engineers Garage

  • Electronic Projects & Tutorials
    • Electronic Projects
      • Arduino Projects
      • AVR
      • Raspberry pi
      • ESP8266
      • BeagleBone
      • 8051 Microcontroller
      • ARM
      • PIC Microcontroller
      • STM32
    • Tutorials
      • Audio Electronics
      • Battery Management
      • Brainwave
      • Electric Vehicles
      • EMI/EMC/RFI
      • Hardware Filters
      • IoT tutorials
      • Power Tutorials
      • Python
      • Sensors
      • USB
      • VHDL
    • Circuit Design
    • Project Videos
    • Components
  • Articles
    • Tech Articles
    • Insight
    • Invention Stories
    • How to
    • What Is
  • News
    • Electronic Product News
    • Business News
    • Company/Start-up News
    • DIY Reviews
    • Guest Post
  • Forums
    • EDABoard.com
    • Electro-Tech-Online
    • EG Forum Archive
  • DigiKey Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • Learn
    • eBooks/Tech Tips
    • Design Guides
    • Learning Center
    • Tech Toolboxes
    • Webinars & Digital Events
  • Resources
    • Digital Issues
    • EE Training Days
    • LEAP Awards
    • Podcasts
    • Webinars / Digital Events
    • White Papers
    • Engineering Diversity & Inclusion
    • DesignFast
  • Guest Post Guidelines
  • Advertise
  • Subscribe