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Radio systems have an antenna that radiate energy into the atmosphere. Other antennas resonate in harmony. What if you just connect the antenna wires of all th
by gridspy 6y ago
Radio systems have an antenna that radiate energy into the atmosphere. Other antennas resonate in harmony.
What if you just connect the antenna wires of all the devices together?
That's what a single wire protocol does.
- im3w1l 6y agoI'm not really knowledgeable so excuse me if I have a misunderstanding as I try to reason about this from a different perspective. When you have an object with static electricity and put it in contact with a different object, there will be a transient current, even if the circuit is not closed. The objects basically work as poor-man's capacitors. Even though the name is "static electricity", when the objects come into contact, it's actually more dynamic than normal, because there is no current between two objects of fixed and different voltage. The more current that flows, the lesser the voltage difference becomes, in an exponential fashion. This kind of single wire protocol operates solely based on these kind of transient currents. Because the frequency is so high, very little current flows during one period of the waveform, so the receiver will maintain constant potential, as if it was grounded. That it isn't actually grounded means the signal becomes high-pass filtered. In particular, the DC-component must be completely blocked as it would lead to charge buildup with nowhere to go.