This reciver should be powered from 3.3V to 9 Volts. Also you could plug this into a speaker to listen to the radio. Also by changing capacitors in parralel to he inductor can change the station in theroy.
So what do people think about it?
It’s just a diode detector followed by an amplifier. What is the oscillator supposed to do?
The oscillator is supposed to (in theory) create pulses of electrisity (instead of half a Sine wave) to drive a speaker. This could also be read by a microcontroller. Here is a place which has good documentation on Radios: http://sci-toys.com/scitoys/scitoys/rad … itter.html
So who thinks this can come in handy. Also a variable capacitor in parralel to the inductor (which could be tapped) could change the station. A varactor in parralel to the inductor could automaddiclly tune to a station, right?
Here is a updated version! The inductor is tapped and C1-2 is variable! So what do you think about it?
Be careful with the OPA344, it has a GBW product of 1MHz. You may run into some roll off issues depending on the gain of the amp.
I, as well, am not entirely clear what the oscillator is supposed to do. Although I will say it right now, I’m no radio buff.