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- 12-lead ECG circuit diagram - Electrical Engineering Stack Exchange
In ECG-speak, a 'lead' is a pair of electrodes Multiple leads can share electrodes An electrode is a damp patch connected to the skin with a wire back to the machine A lead is a logical measurement taken across two parts of the body
- transformer - Can somebody please explain to me the principle of a T-T . . .
The transformer and consumer switchboard are in the same location, adjacent I've used 2 earth rings, one that connects all equipment metalwork including transformer case to earth and to earth electrode, eliminating earth potential electrocution risks The 2nd only connects the utility earth direct to the earth electrode
- Why does ceramic capacitor ESR change with frequency?
High-frequency region: In frequency zones even higher than the resonance point, |Z| characteristics are determined by parasitic inductance (L) |Z| in the high-frequency region approaches formula (2) and increases proportionately with frequency As for ESR, electrode skin effects, proximity effects and other effects begin to appear
- Grounding resistance dependency on distance - Electrical Engineering . . .
We now install a grounding electrode The grounding resistance of this electrode depends mainly on the surface area and depth of the electrode, as well as the specific resistance of the earth itself As I Understand, there will be an area of influence around each electrode, inside which the resistance will depend on the distance from the electrode
- Does a dangling wire really electrocute me if Im standing in water?
This is not to say that the water around the electrode is not dangerous, but to point that movies are often not specifically accurate with where current is flowing Flashy arcs and sparks - Electricity is invisible All we can see are the effects on objects as electricity passes through them Heat, light, motion, the occasional smell
- Standard practice for earth connection when we use transformers
Protective earth ground connections (PE) need to be connected to earth by means of an electrode driven into the ground or some other metal structure that is partly buried
- shielding - Shielded cables to capacitive sensor? - Electrical . . .
To be honest, the best way to do this is not to run the capacitive sense signals over any distance Local cap sense ICs connected over distance via a digital bus is the way to do this most robustly Anything else and you're having to fight making the outside of the cable insensitive to touch without placing a large capacitive burden on the cap sense signal itself There are ways around this
- Electric capacitors instead of earthing electrode
I've read "out there" that such capacitors inside single domestic circuit (which will include that partially-shielded 3G modem, and my PC, and laptop, and monitor, and 2 1 sound system) - may effectively be used instead of loose-ended earthing electrode
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