Timeline for Charge, Voltage, or Current? What can be measured with the highest SNR?
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 3, 2020 at 11:41 | comment | added | seven68 | This all makes sense, however, to measure the current, ultimately one uses a transimpedance amplifier to convert to voltage, which employs a resistor, so I'm not sure how that wins fundamentally. Why not use a series diode to charge a capacitor and read the voltage on the capacitor? Connecting the FC to ground with an inductor could keep it from charging up. But then are you really "measuring" charge, current or voltage?! | |
| Aug 3, 2020 at 11:26 | history | bounty ended | seven68 | ||
| Jul 30, 2020 at 21:55 | comment | added | Transistor | @Helena, resistance "can be thought of as impedance with zero phase angle." Wikipedia. In polar form it would be |Z|∠θ where ∠θ = 0. So, if you like, resistance is a subset of impedance. | |
| Jul 30, 2020 at 21:26 | comment | added | Voltage Spike♦ | Impedance and resistance are synonymous, a resistor can be modeled with impedance | |
| Jul 30, 2020 at 21:25 | comment | added | Helena Wells | DC has resistance not impedance. | |
| Jul 30, 2020 at 18:49 | comment | added | D.A.S. | Faraday Cups have "Ultrahigh (DC) impedance" , ok, but not AC impedance | |
| Jul 28, 2020 at 16:47 | history | answered | metacollin | CC BY-SA 4.0 |