Hard to find electronic components

Ceramic Earphone

                Below is a picture of the Ceramic Earphone. It works good in Crystal Radios. The earphone is high impedance. Its impedance as I checked with my volt meter is greater than 20 million ohms. This is more than enough for crystal radio sets.

             If you decide to make your own crystal radio remember that radio waves are all that drives the earphone so a good antenna should be used between 50 and 100 ft. If you live near a transmitter tower like I do then a short piece of wire will do for an antenna.

             These earphones are also good for other electronic devices due to its high impedance. The high impedance will allow you to power the earphone with very little power usage saving on batteries. These types of earphones are becoming hard to find. Look around the different sites and see if there is anything else you would like to purchase.

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Part # CEREAR-1, Single earphone 1.97 Each    

Part # CEREAR-25, 25 earphones 1.84 Each 

        

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