Here the simple and low cost FM transmitter circuit. The frequency range of this FM transmitter should be about 89MHz ? 109MHz. Output power is about 9mW at 9V.
Components List:
Resistors: R1, R6 : 12K R2, R4 : 100K R3 : 22K R5 : 1K R7 : 100R Capacitors: C1 : 10uF/25V C2 : 22n C3 : 10n C4 : 3n3 C5 : 2p7 C6 : 22p C7 : 100uF/16V Trimmer : 0-30pF tuning capacitor Mic : ECM-60P Transistors: Q1 : BC338 Q2 : BC548B
The battery supply rails have been well tied together with respect to radio frequencies (C1, C2 and C7.) The tracks are also thicker. This makes the circuit a single “solid” block eliminating RF currents in different parts of the circuit. This also means the battery no longer has RF on it which makes the whole unit a lot more frequency stable. A battery is perfect choice.
Download the complete explanation of this FM Transmitter (include circuit diagram, component list, the circuit’s work) in PDF format:
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Source: kitrus.com
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Pls I need a diagram of fm transmitter with the highest frequency rate also a diagram of radio reciever,all with components.I will be greatful if my request is granted.Thanks
I want to make Fm transmitter and receiver could you help me to send circuit diagram and other related documents
regards
I want a fm reciever circuit in 2kilometer capacity
I am reading Diploma in Engineering. I Want to make a FM radio station for 95MHz Please send me the circuit diagram and components in detail.
i am student. piease...., send me a 500M radio transmiter circuit diagram. if u help me i will be thankfull...
thanks the infomation is good, am a electronic student that have special intress in transmitter building and repair, back in africa i dont have tuitural or books to help me through, once again thank you and looking forward to hear from you
I am a electronics students.. plz send me a 1km range radio transmitter.. or how can I spend my transmitting range??in above circuit..if possible
Please, I have gone through the FM Transmiter circuit diagram on your web site; but I have difficulty converting the capacitor values (nano/pico farad) to the numeric value such as 102, 103, 104, and so on which is common to the ceramic type. For me to purchase these capacitors (correct values), I must know these values. Please, kindly help me. Thanks.
iam student in a collegepleas sent me a circuit diogram of fm transmitter of 500m range.
i am pleased with your articles i am a student in a college please sent me a circuit daigram of fm transmitter of 2km range.