Project Counter

I researched and designed the circuit for the below mentioned purpose,
but the circuit did not work properly... I just light up the LED, and
using the connections as shown in Datasheet, made the reciever circuit.
But i'm afraid that its not working.
What would be Wrong?

Actual Application

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Receiver/ Sensor>>>
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Transmitter/ LED>>>
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Datasheet TSOP*** (Receiver)

The Work i wanted to do...
https://www.electro-tech-online.com/threads/room-person-counter-help.97193/


Reference : https://www.electro-tech-online.com/threads/how-to-set-reset-latch.103843/

Are you modulating the IR emitter? This question has come up lots of times in these forums. Search for previous threads.

MikeMl said:

Are you modulating the IR emitter? This question has come up lots of times in these forums. Search for previous threads.

Click to expand...

i got some answers...

To be more clear, i'm posting this...
I actually want to run a latch using this arrangement (TSOP1738).
I made the connections as shown in the 'DIAGRAM'(without Resistor and Capacitor),
and tapped the output(OUT) to feed the IC.
But the TSOP1738 is showing output without any IR- Rays falling on it.
does this happen if i dont design circuit properly?.

Here's the what i need to do>>>

Its normal.When there is no signal it will give logic 1 (5V).When IR beams fallen then it will make Logic 0 (0V).

You need that Resistor and Capacitor which is helpful to minimize power supply disturbances.

Gayan Soyza said:

Its normal.When there is no signal it will give logic 1 (5V).When IR beams fallen then it will make Logic 0 (0V).

You need that Resistor and Capacitor which is helpful to minimize power supply disturbances.

Click to expand...

But even when i obstruct the IR rays, the output remains unchanged

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TSOP1738 datasheet

The same circuit is modulated in 3 different ways>>>

The capacitor is in b/w out and gnd in one pic, and its somewhere else in other pic.
So confused , what exactly is modulating and let me know about modulating, which pic is correct?
(TSOP1738)