Abid Hussain

10 Questions 39 Answers 0 Followers

Questions related from Abid Hussain

How to find depth of material/tissue using dielectric constant?

I want to measure the depth of the tissue using dielectric constant/permittivity. In the attached picture different color represents different material. I want to measure the depth of the first...

27 April 2022 7,086 0 View

Ablation Catheter design?

I want to design a prototype Ablation catheter for some research work. Does, anyone has any good book, link or any other good source for ablation catheter design. It should cover all the aspects,...

11 August 2021 1,771 12 View

In Resistive Pulse Sensing (Coulter counter) a small variation in the flow rate changes the amplitude of the voltage drop across sense resistor, Why?

I am trying to build resistive pulse counting system for research purpose. I noticed that a small variation in flow rate change the voltage drop across sense resistor. I did not understand the...

02 November 2020 4,566 3 View

I want to make EMI meter, for measuring noise (dirty electricity) in a single-phase AC power line. Do anyone have a circuit schematic for this meter?

My aim is to measure the noise in AC POWER line. Although we have such kind of device in the market like "https://www.emfhome.com/shop/emi/meter". But I want to make one from scratch for research...

29 October 2020 2,055 0 View

I want to make a differential amplifier, the differential input to my amplifier is 40mV. How to limit amplifier initial input to avoid saturation?

I am trying to make a differential amplifier for one of my project. Input to amplifier is 40mV, this input is halting me to achieve higher gain, due to saturation. My question is how to limit this...

23 September 2020 1,627 1 View

How to drill 50um hole on SLA 3D printed object, depth of SLA printed object is 300um-500um?

I want to make 50um hole on a SLA 3D printed part. I did 200um hole using 0.2mm drill bit, but now I need to make 50um hole. My question is what is the easy way to do this, any help or suggestion...

14 September 2020 6,881 1 View

Can we use microwave oven for curing PDMS (microfluidic chip) , mold is a 3D part from SLA?

I want to make a micro-fluid chip using PDMS. I print the casing for this purpose using SLA material. I want to cure the chip faster. I have a microwave oven (700 Watt). My question is that can I...

01 September 2020 5,229 4 View

Processor temperature goes to 75C with video streaming, what could be the reason?

I am using A64 Allwinner chip in my SoC. And boot Debian on it. Everything is working good but when I play any video from internet, the chip become too hot. I checked the temperature with...

28 August 2020 9,942 1 View

How to remove 50Hz noise from DC signal?

I am trying to make an Instrumentation amplifier. My signal is in mV. I am getting my signal from shunt resistor. But problem is noise level. On oscilloscope I am getting 50 Hz noise and the...

21 August 2020 8,691 9 View

Getting pulse on oscilloscope by resistive pulse sensing method, I am trying to measure the pulses directly, but oscilloscope measurement is so noisy?

I made a setup for coulter counter/resistive pulse sensing following the following link " https://www.teachengineering.org/activities/view/duk_retcoulter_act1". Followings are the steps for the...

22 June 2020 1,352 1 View