Can the Early voltage be physically explained?

I have been thinking for a long time on the so-called "Early voltage". What interests me is whether there can be some physical explanation of this quite artificial definition. IMO this concept...

01 February 2018 3,041 16 View

What is the idea of a balanced bridge circuit? Why it is named in this way? What is the 'bridge' in the bridge circuit?

We have seen a balanced bridge circuit in the basic circuit of...

08 September 2016 8,681 34 View

What is actually a "load line"... and can this concept be presented in a more attractive way to students?

The load line is widely used in the graphical analysis of transistor circuits... https://en.wikipedia.org/wiki/Load_line_(electronics) ... but, as a rule, it is presented in a formal way... just...

04 May 2016 1,182 90 View

What is a "generator line"... and how it is related to the "load line"?

Once clarified what "load line" exactly means... https://www.researchgate.net/post/What_is_actually_a_load_line_and_can_this_concept_be_presented_in_a_more_attractive_way_to_students ...now it...

04 May 2016 6,792 8 View

What is the secret of diode clippers? Can we build these diode circuits in a logical manner rather than giving them as ready-made circuit solutions?

As already I shared with you, my students and I managed to unravel many of the mysteries of the mere potentiometer in the first lab on Basic circuitry dedicated to resistive passive...

02 March 2016 9,451 90 View

How many circuit concepts can be presented by the humble potentiometer?

02 March 2016 4,437 80 View

What is the actual output transistor characteristic and how do we present it?

As a rule, BJT output characteristics are presented as a family of particular characteristics representing the function of the collector current IC of the collector-emitter voltage VCE while the...

10 November 2015 6,526 10 View

What is the input quantity in the simplest diode IV measuring setup?

In the laboratory of semiconductor devices, I suggest to my students first to measure the diode IV curve by the simplest and very popular "manual" setup - a potentiometer driving a network of...

09 October 2015 7,698 26 View

Why does the common-base stage have higher output impedance than the common-emitter stage?

Textbooks on semiconductor devices claim that the common-base configuration has greater output impedance than the common-emitter configuration. That means common-base output characteristics are...

08 September 2015 8,357 14 View

How do students investigate semiconductor devices in the lab - manually or automatically?

The basic activity of students In a semiconductor lab is to investigate IV curves of basic semiconductor elements (diodes, transistors, etc.). They can do it in various ways. The most primitive...

08 September 2015 9,002 5 View

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View

How can I integrate a routing protocol in a tiny device (e.g. Raspberry Pi)?

Hi Community, I'm facing the issue of integration/compiling a new routing protocol in a WSN simulator. The final goal is to successfully add, configure this routing protocol in hardware devices...

01 March 2021 9,332 6 View

RIA. How to measure?

When you use RIA, with a control the unknown sample with antibodies, you bare in mind the binding sites of the antibodies. However you still need to measure labelled antigen (radioactive) and not...

28 February 2021 2,133 3 View

How to Eliminate cosine error and abbe error in LASER measurement system(for example Rhenishaw XL80)?

I like to do project in laser measurement system. My objective is to eliminate or reduce the cosine error, abbe error in Laser measurement system. I have Rhenishaw XL80 system. Please tell the...

28 February 2021 4,890 3 View

Gas sensor response and recovery time independant of flow rate and chamber volume?

I am trying to obtain the response and recovery times for my gas sensor device. It appears the the response/recovery times are primarily dependant on the flow rate of the gas I inject into the...

26 February 2021 1,511 3 View

How relevant is Mini slump cone?

for all the rheology researchers, my question is, how relevant is a mini slump cone (smaller than a standard 50 cent rheometer). currently based on testing, the thickness of slumped material is...

26 February 2021 3,668 1 View

How to measure angle between laser travel path and machine axis in Laser Measurement system?

25 February 2021 1,987 3 View

How to calculate battery consumption for IoT device?

Hi, everyone I'm working on a privacy-preserving algorithm that will apply to IoT devices. So, I need to measure the power consumption by implementing this algorithm. Any suggestion, advice,...

25 February 2021 8,749 6 View