Timeline for How can I build an impedance measurement circuit?
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
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| Aug 12 at 14:49 | vote | accept | Cricket Love | ||
| Aug 12 at 10:01 | history | edited | JRE | CC BY-SA 4.0 |
deleted 92 characters in body
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| Aug 12 at 9:48 | answer | added | Sagar Saini | timeline score: -1 | |
| Aug 10 at 22:17 | comment | added | Fabio Barone | What is the precision & accuracy required, eg: within 1%, or parts-per-million? Will it be used in a temperature & humidity controlled environment? | |
| Aug 10 at 22:16 | comment | added | Fabio Barone | What is the physical form-factor required for this apparatus? Eg: benchtop, standalone field ruggedised, or co-located within another apparatus? What is the available power source, eg: mains AC, battery, or DC from another apparatus? What is the use-case, eg: manual operation on a bench, or automatic periodic operation within another apparatus? | |
| Aug 10 at 7:27 | comment | added | Francesco M. | To measure the capacitive impedance (in practice of the R-C parallel) the De Sauty bridge is used. To automate it the step seems simple to me using a microcontroller and some OpAmps to vary the known capacity of the bridge. | |
| Aug 10 at 2:11 | answer | added | jp314 | timeline score: 0 | |
| Aug 10 at 1:26 | comment | added | periblepsis | The sensor's model is a capacitor and a resistor. These are orthogonal, so writing impedance between 1 and 30 meg isn't entirely clear about the capacitance range and the resistance range. Can you add more detail? | |
| Aug 10 at 1:11 | comment | added | D.A.S. | Have tried RLC meter designs at 10 kHz? 1MHz? | |
| S Aug 10 at 0:48 | review | First questions | |||
| Aug 10 at 4:01 | |||||
| S Aug 10 at 0:48 | history | asked | Cricket Love | CC BY-SA 4.0 |