Team 1 - RadioStarz: Building an AM radio on a breadboard
Thomas King, Isabel Laguarda, Meredith Blanchard, Lael Ayala
The goal of this project was to gain a deeper understanding of how Amplitude Modulated (AM) radio waves are received, demodulated and amplified to output music. To do this, we attempted to build our own AM radio receiver using breadboard components and an antenna made from scratch out of ferrite and copper wire. We combined resonant capacitors and inductors to create an antenna system capable of efficiently capturing and channeling electromagnetic radio waves. We tried different systems with components including transistors, diodes, and op-amps to demodulate the received signals, extract the underlying audio information, and amplify it into a discernible output. Though we did not achieve our goal of constructing a functional AM radio receiver, we deepened our understanding of the principles of its operation through hands-on experimentation and design.
Пікірлер: 5
Parabéns pelo empenho...!!!
Dude I really liked the vibe of this video and the project too
Did you remove the insulation from the enamel wire? It's actually really hard to remove. You either have to scrape it off with a razor blade, or burn it off. Magnetic antennas are actually really good at penetrating building materials, and so being indoors shouldn't be much of an issue. Magnetic loop antennas are directional, and so they need to be pointed towards the transmitter for best SNR (A process called "nulling" that can be used to direction find the transmitter). Wrapping the antenna around a metal object would greatly affect the inductance of the antenna. You're effectively changing the permeability of the core of the inductor, and that could be significantly throwing off the tuning of the antenna. Tuning the antenna to be resonant without a variable capacitor would be really hard. You'll know when the antenna is tuned when the output speaker is loudest.
You got something here bud. *Stay off the ladies and grind the components instead.* RF wizard inbound, In a dip2 package! Simple tubes dipole?
The Video is well made but the scenario of your fictional story is a very bleak one. So almost all of our home planet is destroyed apart from you four students and your learning establishment. If in the story you succeed in making a usable Radio Receiver where would the Radio Signal(s) that you were hoping to hear on it be coming from? An Alien Spacecraft perhaps? You would only have so much time to listen due to limited battery power and worse than that as human beings need food and drink your days would be numbered.