News post : ElecCircuit.com |  |
| FM transmitter circuit without coil Posted: 15 Nov 2015 08:16 AM PST This is FM transmitter circuit without Coil,using inverter digital IC as main and controlled frequency is precise by crystal. Figure 1 the circuit diagram In Figure 1 is RF oscillator circuit which use a inverter IC1/2 and ceramic crystal filter 10.7 MHz to use drive IC1/4 – IC1/6 by through IC1/3. When inverter in parallel form this impedance output is low thus they can drive directly an antenna. When output of IC1/4 – IC1/6 are square wave which have much more internal harmonic. The harmonic number 9 of frequency 10.7 MHz (96.3 MHz) will take place at the center of the FM band. The IC1/1 is audio amplifier which signal from the the micro phone will be amplified and will The post FM transmitter circuit without coil appeared first on Electronic projects circuits.  |
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