Our project is to do a simulation of the
operation of an FM transmitter in software .
Because an
FM transmitter ?
FM transmitters are of great use , can be
used in emergency situations , communication and even be used as listens .
Operation of a transmitter circuit
To produce a wave of a radio frequency
amplifier circuit , a feedback circuit of the signal to be positive and a
resonant circuit is required.
The transmitter circuit should be the (
BF494 ) transistor frequency , the circuit should follow the following
configuration : the coil and trimmer in parallel , determine the frequency of
operation, while the capacitor is responsible for keeping feedback signal
fluctuations and the resistors polarizing the base of the transmitter. Feeding
should be done by two AA batteries .
List of
components :
Resistors ;
R1 - 4.7k
R2 - 6.8 k
R3 - 3,9 k
R4 - 4.7 k
capacitors ;
C1 - 10uF
C2 - 22NF
C3 - 4.7 pF
C4 - 100nF
CV - 30pF
other ;
1 inductor - 4 turns
1 - BF494
2 - Dry batteries
1 - Microphone
1 - Antenna
The choice of software for the simulation
MULTISIM, is an electronic
simulator, which enables you to build and simulate electronic circuits within
the analog and the digital area.
Advantages of Simulation
with Multisim:
- Integrates schematic
visualization with the simulation;
- Explores the behavior of
electronic circuits with unique virtual instruments.
