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555 Audio Modulated Flyback Transformer
https://kaizerpowerelectronics.dk/high-voltage/555-audio-modulated-flyback/
The 555 IC supplied by 12 VDC can not source much more than 140 mA before the voltage drop on the output gets very high. At 140 mA it is already 1,82 VDC. At 200 mA the voltage drop is at 2,5 VDC. The low output will affect …
555 Audio PWM Apmlifier | Full Circuit with Explanation
https://www.electronicsforu.com/electronics-projects/555-audio-pwm-amplifier
The ubiquitous 555 timer IC handles audio signals in its own pulse-width modulation (PWM) way. Here, the 555 IC works in astable mode. The …
Audio Amplifier Circuit using 555 Timer - EEWeb
https://www.eeweb.com/audio-amplifier-circuit-using-555-timer/
The 555 Timer generates a carrier signal, which is modulated by the amplified audio signal to produce a modulated signal. This signal is used to …
A DIY 555 AM Transmitter – AB1DQ
https://ab1dq.com/2021/11/27/what-is-rf-modulation/
It is possible to construct a very simple low power transmitter built around the ubiquitous 555 Time Integrated Circuit which is capable of demonstrating the principle of amplitude modulation by mixing an audio signal with a carrier signal that can be transmitted to and received by a AM radio receiver.
IC-555-timer-as-an-Audio-Amplifier | Mini Projects ...
https://www.electronics-tutorial.net/Mini-Projects/IC-555-timer-as-an-Audio-Amplifier/
Microphone converts input audio signal to electrical signal.This electrical signal is amplified on which Pulse width Modulation is done using IC 555.The output wave drives the speakers which are basically transducers which convert input electrical signal wave into an audio signal. II. COMPONENTS: A. IC 555 A standard 555 package includes-
555 Timer as an Amplifier | Low Power Audio Amplifier ...
https://electronicshub.org/low-power-audio-amplifier-using-555-timer/
Low Power Audio Amplifier Circuit Principle: Here this circuit is based on the principle of audio amplification using operational amplifier and pulse width modulation using 555 Timer. The audio signal is amplified using low noise high input operational amplifier TL071 and is fed to the control pin of the 555 Timer.
555 Flyback Driver - Audio modulation test - YouTube
https://www.youtube.com/watch?v=6XwfuBmMI7Y
Circuit diagram: http://tefatronix.g6.cz/display.php?page=555_fb_driver&lang=enPlaying Ice Flow by Kevin Macleod.555-based driver, adjustable on/off time.IRF...
555 circuits using the 555 Timer as an Astable Oscillator
https://www.electronics-tutorials.ws/waveforms/555-circuits-part-1.html
AM Modulation with 555 timer | All About Circuits
https://forum.allaboutcircuits.com/threads/am-modulation-with-555-timer.160289/
The 555 timer would have an output of about 600 Hz, an audible tone, and the carrier wave would be about 1 MHz (In the link and picture it is less but just so that I have a better overview). This is just a school project, so the transmitter is not supposed to be long range. The suggestion by @DickCappels in #6 is the way I'd go.
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