9V fm transmitter circuit design using transistors

Posted on Feb 6, 2014

The tuned coil L1, has two output tapping for the antenna connection, marked `A` and `B`. These are both low-level outputs and you choose which tapping you want to use ( stable low range, or more unstable but higher range). Tap B (2. 5%) takes just a very small portion of signal from the oscillator circuit and therefore gives a very frequency stabl

9V fm transmitter circuit design using transistors
Click here to download the full size of the above Circuit.

e transmitter. The output level (around 2. 5mW) and range are therefore somewhat reduced. The frequency determining elements (L1, C5 and C6) form a simple LC tuned oscillator. The inherent problem with this type of circuit diagram transmitter is that any external load (antenna) will change the operating frequency.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    I2C using (MSSP)
    Voice link over spread spectrum radio
    a voltage-controlled current sink / voltage-controlled resistor
    propeller clock amazing illusion
    Gray Tube Replication 75
    Adjustable voltage with adjustable current limit circuit
    6 static display circuit