FM Transmitter 50MHz

826

10:44:25

Replace sine wave generator with c-mic. 
Replace voltmeter with antenna.

Good for transmission at 100 MHz within FM band with harmonic (tested). Open to critiques if someone sees a mistake or how I could make it better.

published 3 years ago

giomix

3 years ago

c-mic should generate audio frequencies like range 1 to 20khz, not 234khz. RF oscillator seems not working here.

justinemery95

3 years ago

Yeah not sure why it’s not depicting it correctly…. I built this exact circuit in person and it works up to about 3 meters…. Only left the sine wave gen at that freq in order to get movement on the output

justinemery95

3 years ago

Thinking maybe if I lower the resistance value for the emitter resistor I could get a stronger output

Rsleo06

3 years ago

I’m not good with radio engineering so I unfortunately can’t give feedback until I learn in the future. Is it possible you could list the components to the most high power transmitter possible to build in this topology? Just curious

justinemery95

3 years ago

Rsleo06 I haven’t played around with the power levels yet other than lowering resistance values to get what you need. RF is very sensitive and I think your most important component would be the antenna in order to leave the H field and maintain a significant signal in the E field. Play around with it a bit and see what results you find.

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.