1. WIRELESS TV HEADPHONE CIRCUIT
Project Title
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WIRELESS TV HEADPHONE CIRCUIT

2. ABSTARCT
This circuit allows you to watch your favourite TV programmes late at night without disturbing other family members.
Most modern TVs are nowadays equipped with audio-in/out and video-in/out RCA sockets. Using an RCA-to-RCA cord, connect the audio output of your TV to the transmitter’s input.
Adjust the gain of the audio preamplifier with the help of preset VR1 for clear reception in a portable FM receiver equipped with an earphone socket.
This transmitter draws only a few mill amperes of current and doesn’t require on/off switch. It can be fabricated on a small piece of strip board.

3. PROJECT BLOCK DIAGRAM

4. HARDWARE COMPONENTS BATTERY RECTIFIER FILTER VOLTAGE REGULATOR
TRANSISTOR
COIL
LED
1N4007
RESISTOR
CAPACITOR

5. BATTERY
An electrical battery is a combination of one or more electrochemical cells, used to convert stored chemical energy into electrical energy.
The battery has become a common power source for many household, robotics and industrial applications.
Larger batteries provide standby power for telephone exchanges or computer data centers

6. TRANSISTOR
The BC547 transistor is an NPN Epitaxial Silicon Transistor.
It is used in general-purpose switching and amplification BC847/BC547 series 45 V, 100 mA NPN general-purpose transistors.
The transistor is a "CURRENT" operated device and that a large current (Ic) flows freely through the device between the collector and the emitter terminals.

7. BC548 The BC548 transistor is an NPN Epitaxial Silicon Transistor.
The BC548 transistor is a general-purpose transistor in small plastic packages.
It is used in general-purpose switching and amplification BC848/BC548 series 45 V, 100 mA NPN general-purpose transistors.
Whenever base is high, then current starts flowing through base and emitter and after that only current will pass from collector to emitter

8. NPN Transistor Configuration
PNP Transistor Configuration

9. COIL

10. QUERIES ?

11. THANKYOU