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thank you Gray B for replaying
But the Receicer I have not look like that
it's have a three legs , Vcc , GND , O/P
It doesn't matter you can use this also with a not gate or Transistor...!!
Hi abdu-abdu,
the circuit Gary B suggested contains a visible light receiver (LDR).
Your receiver chip looks more like a TSOP582X (Vishay) which is sensitive to UV-light.
The chip contains signal amplifier and a automatic gain control circuit (AGC).
Using a transmitter emitting UV light steadily the receiver reduces sensitivity by AGC.
You should transmit bursts of equal 600µs length and pauses using the carrier frequency the chip is designed for (30 through 56KHz).
Refer to the data sheet of the receiver circuit to optimize the transmitter.
A transmitter can be built around two (or a dual) NE555. The dual version is the NE556.
Control the carrier oscillator by the first circuit which turns on the second every 1,200µs with 600µs burst length.
If the transmitter circuit has to work accurately you might use a crystal oscillator. Frequency deviation of ±5KHz from the nominal receiver frequency is no problem. Receiver circuits are not narrow banded.
Here is a circuit design using a crystal oscillator.
Boncuk