Questions tagged [capacitance]
Capacitance is the ability of a body to store an electrical charge.
1,002 questions
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Aluminum and Tantalum capacitors - Simulation parameters
For the simulation of my design, I am using aluminum and tantalum capacitors.
While performing a power delivery network (PDN) analysis, I looked for S-parameter models (.s1p/.s2p) for these capacitors....
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Can I use a lock in amplifier to measure touch-capacitance for a touch sensor?
I'm trying to make an ultra sensitive capacitive touch sensor. I want to use a lock-in amplifier type setup to get a good SNR. I've attached a general diagram of my proposed setup.
My main question is ...
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GW instek LCR-819 meter no-RS232 problem
I've got GW instek LCR 819 meter in good conditions and its quite good for me. But there is a problem it got no COM (RS232) port to connect to PC.
There is a 4 screw metal cover on the back of the ...
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Designing Supercapacitor
We're doing a biowaste based supercapacitor as our last project. I couldn't find anywhere methods of designing supercapacitors (having target capacitance based on certain measurements like specific ...
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Soil moisture sensor problems
I'm trying to build a simple capacitive soil moisture sensor, but my sensitivity is very low.
D3 is a 3V 50% PWM signal with ~500kHz.
A0 is connected to an Atmega328p.
The wire between R4 and the ...
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Measurement correction with LCR meter
I would like to correct the values that I am measuring with an LCR meter (specifically the LCR6002 from GW Instek).
I am a bit acquainted with electronics in a very basic level, but here, my knowledge ...
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Why does resistance value in a MegOhmMeter dip when touching an unrelated conductor in a 8-conductor low-voltage HVAC CL2 cable?
Am using Klein tools ET600 to check if there is any hidden short to ground (like nail touching any conductor) in any of the 8-conductors in a 60 feet HVAC cable running from indoor air-handler to ...
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How do you find self inductance for common conductive geometries?
I was trying to model a surface mount resistor (say an 0603 package). Below, is a simple equivalent circuit which shows the stray inductance, the resistance itself and the stray capacitance between ...
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Which capacitor to use? Evaluating Capacitance
I am running a 25W DC load at 5.2V. When the power is cut-off I want a parallel capacitor such that it can keep running load for 1 second.
What capacitance is required? Is calculated using x2 methods &...
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Output capacitance of 74LVC2G125 when tri-stated?
The datasheets for the NXP and Diodes Inc versions of the 2-gate tristate buffer don't seem to give any value for output capacitance (when the buffer is disabled via OEn = 1 and the input is not ...
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RC circuit with DC source: Kirchhoff’s law, voltage directions, and current flow convention
I am creating a video in Manim about basic electrical circuits. The circuit under consideration is an ideal RC circuit with a DC voltage source, no energy losses.
My reasoning is as follows:
When the ...
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How is load capacitance calculated given only a Crystal Oscillators frequency?
I would like to start out by saying I know the load Capacitance is 18pF for my 16MHz crystal oscillator and that would make my C_L1 and C_L2 both equal to 26pF given a Stray Capacitance of 5pF for my ...
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Higher electric field when going off-grid
With an oscilloscope and a 1 m wire at the probe for electrostatic induction I measure 50 Hz electric fields from my mains at a fixed spot in my house. I model reading voltage V_1 at my oscilloscope ...
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Capacitance measurement using Wheatstone bridge
I want to measure capacitance between 0.5pf and 500pf. Is a Wheatstone bridge a good way to do it? The capacitance is of a twisted pair wire dipped in water for water level measurement.
I know I need ...
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Current in a vibrating electrometer
I'm working out the relative "signal" of different electrometer designs following on from this question. I'm trying to determine the current magnitude (what would A read?). Consider the ...
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