IR to RF converter circuit.
Description.
The IR to RF transmitter circuit given here can convert the IR signals from your remote to RF signals to long distances. The circuit given here is a good one for extending the range of your IR remote.Also such systems does not need a line of sight since RF signals are used.
The transmitter is based on a St-TX 01 ASK transmitter IC (IC2).The IR signals falling on IC 1 (TSOP 1738) will be converted to RF signals by IC2 and transmitted through antenna.The transmitter has a power output of 16dBm at 5V supply.
The receiver is based on a ST-RX04 ASK receiver IC (IC3).The IC3 receives the transmitted code, decodes it to the original IR code and re transmits through IR LED (D1). The transistor Q1 is used to drive the D1 from the output of the IC3(pin2).
Circuit diagram with Parts list.
Notes.
- Use a 6V battery with a 1N 4007 series(forward biased) with its positive terminal as power supply for each circuit.
- Use 20 cm long copper wire for each antenna.
- Ranges upto 200m are possible with matching antenna.
- The capacitor C1 must be rated 10V.
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very good but transistor values ?
Plz someone tell me
what is the ic numbers of ic3 and ic3
Admin Sir,
How do we use the transmitter? where do we press or use some sort of switch?
How can we buy the I.C’s, it is very hard to finde hgere in Kuwait.
Thanks
the idea is good but cant used as ir to rf to ir extender ,where the ir has the data but no carrier freq because all ir decoder sensors decodes for the carrier freq Ex:40khz,38khz,36khz etc.so it requires a carrier freq gen for tx the data again.
thanks for publishing these circuits
Did anyone every try this circuit and if this worked properly?
Great Post! I personally really appreciate your writing. This is a great website. I will make sure that I stop back again!.
Did you test this circuit? I wonder that it should work without any signal modulation after IC3…
In IR to RF converter what is the IC no. of IC2(STtx01)& IC3(STRX01)?Plz rply
oops! that was an error in he circuit diagram.
now corrected.pls check the circuit.
thanks for pointing the error.
IR to RF converter circuit. What is the ic2 IC number
pls reply me.
i need to know about transmitter frequency
Hi,
I would like to know whether any separate encoder is required for the RF transmitter or any decoder is required for the RF receiver.
I could find RF transmitter and receiver ASK modules at http://triindia.co.in/shop/index.php?cPath=44
Can you please let me know if I can use that 434 MHz modules mentioned over there?
Thanks,
Suvendu.