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Hello guys! I have been searching for some oscilators and I found this circuit. It's based on the Collpits oscilator, and it definetely works, but I would like to understand why this circuit produces oscilations (and pretty accurate sines, actually)! Could you guys give me some help to...
Hello. I'm very inexperient with eletronics, but as a class project I've been working on a low power and low range AM transmitter. Unfortunately, I could not finish this project because I could not find the necessary material in the country I live (even in the internet). I could basically...
Greetings, guys! I'm trying to increase the frequency of a Wien's Bridge up to at least 600kHz. As R1=R2 and C1=C2, the frequency should be given by \[\frac{1}{2ΠRC}\], but this relation does not fit the simulated frequency when it goes higher than 14k~15kHz. I'm aware that the Wien's Bridge was...
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...
Greetings friends! I've recently decided to design an AM transmitter as my first eletronic project, with a Wien's Bridge and the signal attached to a Common Emitter Amplifier (with a NPN). The Wien's bridge that I designed runs in the simulators with a frequency of 769kHz and its output goes...
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