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Activities/Turtle Art/Using Turtle Art Sensors (view source)
Revision as of 00:57, 4 December 2010
, 00:57, 4 December 2010→The XO as an audio amplifier
This worked better on the XO1.5, presumably because of its higher processing speed. The headphones are omitted. A 0.1uF capacitor is connected between the radio output and the XO input to isolate the detector diode from the XO's DC bias. Theory predicts that a resistor to ground would be necessary at the radio output but practice indicates otherwise.
This worked better on the XO1.5, presumably because of its higher processing speed. The headphones are omitted. A 0.1uF capacitor is connected between the radio output and the XO input to isolate the detector diode from the XO's DC bias. Theory predicts that a resistor to ground would be necessary at the radio output but practice indicates otherwise.
You can construct most of the crystal radio from common materials
[[File:Inductor.jpg]]
The tuned circuit inductor, 75 turns of insulated wire on a toilet paper core.
==Links==
==Links==