Hello, thank you for your reply! I'm taking a very introductory course in eletronics, i had to design a circuit that must contain opamps, diodes and transistors. Those 741 I only mentioned because these are the opamps I can use from the course, anything else I must buy. I read something about the oscilators and decided to make an AM transmitter, it is not meant to be anything perfect or commercialy applyable, just my first project for fun and for the course
I would also know how to make the modulation with an analog multiplier of opamps, but it would not be interesting and the output signal would be even worse than the one from the circuit I'll do. I'm aware that attaching a signal in the Common Emitter Amplifier will not actually "modulate" it, but the effect is very similar (again, this is not meant to be something perfectly functional, I don't really mind with some noise, recognizing the signal in the radio is enough
). The "modulator" might be something like this one described here
**broken link removed** . The circuit seems to run well, and if it does half of what he is doing in the simulations, i'm happy
I see that LC should be better, but I really need to use an opamp and transistor at least.
What should I take in consideration to evaluate if an opamp is or not suitable for the circuit?
Thank you