Hello, this is my first post of possibly many future fundamental questions.
My crystal radio requires a cold water pipe or rod in the earth ground. My transistor radio (or iPod or any other handheld electronic device) has a circuit board with many points labeled "ground", but no wire into the earth.
Is there a simple way (or link) to explain what a circuit board ground is? I guess I'm asking how something can be grounded if it isn't connected to... the ground.
Thanks for any insight.
My crystal radio requires a cold water pipe or rod in the earth ground. My transistor radio (or iPod or any other handheld electronic device) has a circuit board with many points labeled "ground", but no wire into the earth.
Is there a simple way (or link) to explain what a circuit board ground is? I guess I'm asking how something can be grounded if it isn't connected to... the ground.
Thanks for any insight.