1.Resistors
100k ohm-1
100k ohm-1
1m ohm -1
10k ohm -3
2inductors
0.1uH (air coil)
3.Capacitore
0.1uF -2
40 pf
trimmer -1
4.7
pf-1
4. 10 pf-1
other
Antenna
9v battery
and clip
pcb
second 
stap is circuiting design
Circuit diagrame explain
Fast take a 10k ohm regestiore one side solder other 1m oh resistors one point head next fast resistore and second regsistore in 10pF capacitore insert now take a trangisitore ,
tragistore base are connected C4 and R6 or R5 point where connected each other connected the trangistore base are connected
Now trangistore collectore point ad R2 10k oh resistore and resistore other point are connected R6 point
Now take 0.1uF capacatiore ad R2 resistore and capacatiore other poin and R1 resistore and resistor eother point joined R2 resistore . Take a another capacatore 01.uF C1 one point joined R1 and other point joined Vcc that is 9v c1 capacatore fast point joined another trangistore it code is 2N3904 base point and collectore are joined 30 Pf capasiotre C2 and other point that is emottore are joined R3 resistore .
Resistore one point another capacitore connected that value is 4.7 pF c5 capacitore other point connected to the inductore that value is 0.1uH L1 other point connected C2 second point
if you not understing the explanation you can see the diagrame
we make the circuit and insert the component according to the circuit diagrame and next step is make the inductor
Now build the cuppor inductor
Fast we take wire of 18 gouge or 22 gauge
and round it 4-5 times
and the antenna insert coper wire other head
if you need to increase the audio signal broadcasting more than 100m to 1000m you can use more equipment .so , now leats try to increase the transmetter broadcasting area .Fast of all you can use a
wire which leanth is minimun 50meter and you connecte the wire in transmtter antenna head and you can put the wire other head outside the home . you can use an bamboo thats height minimum 100metter its put the wire second hend that no connect in the transmetter
Now you can broadcast your audio voice large area
How to design and how make your transmetter be professional
Lates build your transmeter look professional ,fast you mesure the size of transmetr circute
and take a card board , mesure the size according to the circute diagarame and height and weight be equal to the circut and the mesurement size marke the read colour
and cut the marke colour part buy part
Than you can take a glue thats you can use to join the board each other and take fast part of the card bord and take another part of the board and joined two board ninite(90) degree angle
next step is take another card board part and take other wight card board part and joined to each other
like fast card board joined
Finally , you can take the two part of card board which are joined each other nintee degree angle
the two card board part take and one part sleep the parallel mode in soil and other card board are sleep fast card board and joine deach other and joined section put some glow bacause the card board joined make a box and the glow are adjust and strog the body
Now , take a drill machine drill the akjusted the curcuit in the card board box.
fast chack the port where the componet like antenna , power etc where measure the line and marked the section and drill the port that you can easily connected the port nad otside metrial
This is the Final section to buid the profisional look Fm tansmeter
take the circute and enter the card box .Becarefull when you enter and adjust the curcit board in card box this time you can look the port that you drill and the output section head are equaly joined
0 Comments