Amp Audio Crystal Radio

Crystal Radio Reciever with Amplifier - Circuits DIY

https://circuits-diy.com/crystal-radio-reciever-with-amplifier/

Crystal Radio Circuits - techlib.com

http://techlib.com/electronics/crystal.html

Can I connect an amplifier to a Crystal Radio?

https://electronics.stackexchange.com/questions/227265/can-i-connect-an-amplifier-to-a-crystal-radio

1 The crystal radio gets all of its miniscule power directly from the energy in the radio signal that it picks up. It is tiny. As a result it can only power a high impedance (high resistance to AC signal) crystal earpiece. The input impedance of these is typically 20 kΩ. (This surprised me as I always considered them much higher.)

audio amp crystal radio | All About Circuits

https://forum.allaboutcircuits.com/threads/audio-amp-crystal-radio.161635/

Crystal radios were used a long time ago when there was only one or two radio stations around you. Not much interference.Today it would pickup maybe 10 or 20 AM radio stations at the same time because it has only a single LC tuned circuit. A real AM radio has six or more LC tuned circuits so that it rejects interference from other station frequencies.

Learning Electronics — 2. Fun with Crystal Radio and ...

https://rayshobby.net/wordpress/learning-electronics-2-crystal-radio-and-extensions/

LM386 Audio Amplifier Module The first time I heard something from the crystal radio, it was really exciting. But the volume is just too small to keep enjoying it. After a bit of Googling, I found a simple audio amplifier chip LM386, which can easily amplify the radio signal to be played on a speaker.

How to Make Crystal Radio Amplifier for Speaker - YouTube

https://www.youtube.com/watch?v=JtPwxbOgBHw

Audio Amplifiers - techlib.com

http://techlib.com/electronics/audioamps.html

Crystal Radio (and other purpose) Audio Amplifier Here is a simple audio amplifier using a TL431 shunt regulator. The amplifier will provide room-filling volume from an ordinary crystal radio outfitted with a long-wire antenna and good ground.