- #1
IssacBinary
- 93
- 0
In building a crystal radio one thing that comes up everywhere I look is the phrase.
"A good ground is as important as a good antenna".
So you have your circuit. Capacitor, Inductor, diode, resistor and headphones in series. Have a long wire just hanging from one place as a long wire antenna and another wire to the ground.
As the currents and voltages in the circuit is going to be super tiny. Grounding isn't for safety...and I can't seem to find any explanation or maths or anything explaining what it is for.
Any ideas?
And is there an alternative? Such as a vitual ground? In case there is no good ground connection..say your in a building and the pipes are not metal.
"A good ground is as important as a good antenna".
So you have your circuit. Capacitor, Inductor, diode, resistor and headphones in series. Have a long wire just hanging from one place as a long wire antenna and another wire to the ground.
As the currents and voltages in the circuit is going to be super tiny. Grounding isn't for safety...and I can't seem to find any explanation or maths or anything explaining what it is for.
Any ideas?
And is there an alternative? Such as a vitual ground? In case there is no good ground connection..say your in a building and the pipes are not metal.