impedance

Hi everyone! I am measuring a voltage divider with R₁ = 500 kΩ and R₂ = 1 MΩ, using a sinusoidal input signal Vₑ with an RMS voltage of 3V. According to calculations, the expected RMS voltage at the midpoint of the divider should be 2V, but when measuring with an oscilloscope, I only get 1 mV...

Hi everyone, I’m facing issues with my nRF52 BLE design due to a solder mask thickness change and grounding approach. I’d appreciate expert guidance on retuning the Pi filter, recalculating impedance, and resolving grounding concerns. Issues Faced: Solder Mask Thickness Change: Ref NRF52 DK...

Dear Members, I hope you are all doing well. I am a PhD student and completely new to circuit design. I need a compact-sized circuit and prefer not to use an impedance analyzer due to its bulkiness. I am looking to build a circuit capable of automatically measuring the impedance of a sensor in...

Dear Members, I hope you are all doing well. I am a PhD student and completely new to circuit design. I need a compact-sized circuit and prefer not to use an impedance analyzer due to its bulkiness. I am looking to build a circuit capable of automatically measuring the impedance of a sensor in...

I put the 1nF capacitor for ESD protection in the LIN interface node. After testing 6kV, impedance deterioration before and after was measured in the measurements. Does this mean that insufficient capacitance values are likely to be applied?

Hmmmm?.... Is ChatGPT correct here? If a series circuit containing a capacitor, inductor and resistor is driven at a known fixed frequency, then is the Impedance calculation as simple as Z=R+Xl-Xc? Why is the impedance triangle not necessary?

Hello, I was just looking at my Fluke 179 DMM manual and I came across the following nominal input impedance for Volts ac. >10Mohm < 100 pF I would like to check my understanding, but I'm assuming the < 100 pF is related to the capacitive reactance at some frequency, however it will not be...

I am attempting to calculate an antenna's input impedance. I have been given this information: A 50 Ω coaxial line is feeding an antenna with a signal frequency of 150 MHz. The coaxial line has a dielectric constant of 2.25, with an outer conductor of 40 mm. The antenna and coaxial cable are...

Subject: Online Coil Inductance Calculators yeild different Results Designing an open air coil wound on PVC pipe with the following specs ... Wire = 12 gauged insulated electrical wire from Lowes - Wire Diameter = .125 including the insulation - Turns per inch = 8 - Total Turns = 212 - Coil...

Bought an air-conditioner on-line. Manual states that "system impedance must not exceed 0.389 ohms". Concerned that as our rented house has solar/mains mixed supply this may burn out again. We can tell from the light in the kitchen that our supply voltage fluctuates frequently. Sometimes the...

I want to study about "finding Input & Output Impedances of Common Emitter BJT Amplifier" However, I could not find a decent source & document about it. Could someone supply me with some documents for that. Then that would be gorgeous for my study. Thanks :)

Hi, I just have solved one of the bjt common emitter question below. However, I'm curious that how can I additionally find those things below: 1) Input and Output Impedance 2) AC Gain Here is the example and my hand draw solution. However, the question only asked to find Vout/Vin... Also, my...

Hello, My name is Daniel and I'm a student for E&E. I started a final project about bioimpedance spectroscopy using electrodes. I found this kit - Spectra Bioimpedance and EIT Complete Kit – Mindseye Biomedical and got one. Sadly, the DFT sample rate is way too slow to achieve a smooth image...

For the past few days I have been trying to buy a proper battery impedance measurement device that is good and also falls under my budget of 1000 dollars. I will be mostly using it to test 3.7V Lithium ion batteries. Could anyone suggest a good measurement device for that

If you have a common circuit with 1 resistor, 1 capacitor, and 1 inductor. Inousoidal voltage and current is applied with angular frequency, ω. Then you want to use the jω-method and express the total complex Impedance, Z, of the above circuit in terms of R,L,C and ω. Answer in the form Z = a +...

Say there are 3 buses of: Bus 1: Slack bus with a voltage source of E=1.0 and phase of 0° Bus 2: a generator and a load. Bus 3: a load. The line impedance are given below: z12 = 0.05 + j0.1 z13 = 0.02 + j0.05 z23 = j0.05 z11 = -j100 z22 = infinity z33 = -j40 The generators and loads are given...

The 3 buses are Bus 1: Slack bus with a voltage source of E=1.0 and phase of 0° Bus 2: a generator and a load. Bus 3: a load. The line impedance are given below: z12 = 0.05 + j0.1 z13 = 0.02 + j0.05 z23 = j0.05 z11 = -j100 z22 = infinity z33 = -j40 The generators and loads are given below...

Hi, I am simulating my postgraduate project using Hyperlynx SI tool. I am testing on PCIe traces of my design. I did my design using Altium and I exported to Hyperlynx file to do the simulation. But I cannot change the trace width and spacing of Differential pairs using Hyperlynx SI tool. Is...

Hello, I got a homework exercise about the calculation of the power factor in a RL-circuit and in a RLC-circuit. The question consists of 3 sub questions, I have managed to calculate the first 2 however I am struggling with the third one. For the calculation of the third question, the other 2...