Tuesday, 28 October 2014

simple FM transmitter

Simple FM Radio Transmitter Project

Here, is a very interesting and simple project in the series of communication used to transmit noise free F.M. signal in the wide range up to 100 M using only one transistor. The transmitted message from F.M. transmitter circuit is received by the receiver having the facilities of F.M. channel or you can also try F.M. receiver circuit published in this website.
Circuit Description of simple F.M. transmitter

The entire circuit of F.M. transmitter is divided into three major stage i.e. oscillator, modulator and amplifier. The transmitting frequency of 88-108 MHz is generated by adjusting VC1. The input voice given to microphone is changed into electric signal and is given to base of transistor T1. Transistor T1 is used as oscillator which oscillates the frequency of 88-108 MHz. The oscillated frequency is depended upon the value R2, C2, L2 and L3. This transmitted signal from F.M. transmitter is received and tuned by F.M. receiver.


Resistors (all ¼-watt, ± 5% Carbon)

R1 = 180 KΩ

R2 = 10 KΩ

R3 = 15 KΩ

R4 = 4.7 KΩ

C1 = 10 KPF

C2 = 10 PF

C3 = 20 KPF

C4 = 0.001 µF

C5 = 1 µF/10V

C6 = 4.7 PF

C7 = 10 KPF

C8 = 3.3 PF

VC1 = 22 PF

T1 = BF194B

MIC1 = Condenser mike

L1, L2 = 3 turns of 22 SWG wire around any thin pencil

L3 = 2 turns of 22 SWG wire around any thin pencil.

Searches related to

electronics projects radio transmitter radio transmitter for android radio transmitter block diagram homemade radio transmitter radio transmitter circuit radio transmitter for iphone Searches related to radio transmitter block diagram radio transmitter block diagram ppt type of radio transmitter advantages of am transmitter application of amplitude modulation Searches related to radio transmitter block diagram ppt am radio transmitter block diagram block diagram of radio transmitter and receiver radio transmitter circuit diagram simple radio transmitter circuit diagram tv transmitter block diagram modulation tutorial how does amplitude modulation work uses of amplitude modulation low level amplitude modulation how to make a radio transmitter radio transmitter for car radio transmitter pdf