Questions tagged [amplitude-modulation]
Amplitude Modulation (AM) modulates a signal by varying the amplitude of the carrier. The ease with which it can be demodulated made AM radio broadcasting popular before FM demodulation was cost effective.
305 questions
-1 votes
5 answers
145 views
Purer AM modulator
I was looking at a AM modulator circuit with a diode and I was dissatisfied with how during the amplitude modulation you produce unwanted frequencies(more specifically the carrier frequency) and as a ...
- 498
2 votes
2 answers
231 views
Crystal quartz oscillator is it good for amplitude modulation?
I am in need of a sine wave generator for a AM modulator I am building.The carrier signal of my AM modulator will be at 10MHz.I searched through the internet and found a circuit on https://www....
- 498
-1 votes
1 answer
125 views
I tried making a trf radio receiver,but it stops working after connecting the lc circuit
So,i tried making a radio receiver and found this circuit from this video https://youtu.be/PYjRSB0ANoU?si=eFcK9MXnqVnIRkv7 when I power it without connecting the lc circuit and antenna, it produces a ...
- 23
-5 votes
2 answers
303 views
Simple AM radio Transmitter
I made a transmitter using a 2N2222, but I can't get it to work. Here's the diagram of my circuit—what do you think is wrong with it? When I measure the voltage at the collector, it reads 0V, but at ...
- 27
0 votes
1 answer
124 views
Using Quartz Crystal in AM Receiver Circuit
I want to build a simple AM radio receiver. All circuits that I have found online use LC resonant circuits as frequency selectors. I know that quartz generators connected to antennas can transmit ...
- 67
4 votes
3 answers
717 views
Using standard THT coil instead of handmade ferrite coil in AM radio circuit
I want to build a simple AM receiver circuit based on this schematic from https://makerf.com/posts/an_lm386_powered_crystal_radio_in_an_altoids_smalls_tin. Instead of 1N34 I will use modern Schottky ...
- 67
1 vote
3 answers
759 views
Simple AM Radio Circuit
I've been reading into RF and I'm starting to experiment with some components on my breadboard. I came across a tutorial with this schematic. Unfortunately the way they worded some of it on the first ...
- 11
1 vote
1 answer
266 views
How to understand and improve Simple Diode Amplitude modulator circuit
Here is the circuit I am a beginner so I'm not sure what exactly could be done to improve the circuit but let me go through what i understand about the circuit. The circuit is comprised of the ...
