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A directional coupler is a four-port network in which portions of the forward and reverse traveling waves on a line are separately coupled to two of the ports. Its properties may be summarized with the aid of the schematic diagram in Fig.-1 with matched terminations on the output ports.
1. A...
Three-phase induction motors are widely used in industrial because they are rugged, reliable and economical. Induction motors do not require a any starting device, also it's rotation direction can be changed easily. The direction of rotation can be reversed by interchanging any two of the three...
General relations:
μ0 = 4π⋅10^-7
μe = (le⋅μr)/(le+g⋅μr)
AL = (Ae⋅μe⋅μ0)/le
Imax = Φmax⋅N/L
Φmax = Bmax⋅Ae
Special considerations specific to the described application:
μr ≈ μi (Justification: owing to the relatively low flux densities involved).
Bsat ≈ Bmax (Justification: owing to modest ΔI/ΔT...
mood: sleepy
music: the classroom printer
Hello, everyone! I am excited to join the AAC community. I am writing my first blog entry just to see how this works. It's nice! I am at a technical school now just getting started in a program for electromechanics. I have a lot to learn from...
This is a tutorial in designing complex transistor amplifiers at the HOBBY LEVEL.
In this turoial you will learn how to bias transistors for switching operations, and amplifying operations.
Then you will learn how to DC couple each stage to the next while maintaining testpoint voltages.
Then...
The news about smartphone manufacturers slowing down older models in order to prevent phones with older batteries from shutting down unexpectedly did not go over very well with many consumers. The intent was good, but customers still balked. What made the situation tough was that customers...
Hello Everybody
I was wondering if it's possible to track a helium balloon in real time. I wanna send it to the sky and be able to watch the position of the balloon on my computer. I think the problem will be that if you go too high, you won't have a cell signal. Is there any way to solve this...
Hi,
I'm new to thermopiles and i have to use them as part of my final year project to detect temperature. I am wondering can anyone help me with a circuit design for a thermopile using an LM741 as an amplifier. Im am not sure how to get a correct output voltage reading from the thermopile. I...
General relations:
μ0 = 4π⋅10^-7
μe = (le⋅μr)/(le+g⋅μr)
AL = (Ae⋅μe⋅μ0)/le
Imax = Φmax⋅N/L
Φmax = Bmax⋅Ae
Special considerations specific to the described application:
μr ≈ μi (Justification: owing to the relatively low flux densities involved).
Bsat ≈ Bmax (Justification: owing to modest ΔI/ΔT...
I don't know about anyone else but when i work with electronics i've got my music up as loud as i can get it and my cat " pork chop " or my "little shadow" always around me. Most of the time shes either in my way or chewing on something she probably shouldn't be chewing on. But no matter how...
ok out of the many projects that ive got planned the one that ive been salvaging parts for, for quite some time is a fully salvaged adjustable power supply. ive got a hold of almost all of the parts except for a LM317 or a adjustable voltage regulator similar to it. usally im able to find every...
i've came up with a list of new ideas to accomplish and the progress i've made isn't very good. i've started one project after another and manage to start one and the start another before i've even finished the other one. so the result of this is a messed up workshop of tangled wires and circuit...
Introduction
Parents are always concerned by children’s health, mainly when a child is sick. Parents used to verify the child well-being by checking its temperature. However,
it is very inconvenient to disturb a child at night and check if everything is normal. In the project eNurse I intend to...
Introduction
Overheating causes potential damage to the circuit components, and can cause fire, explosion, or injury. Power dissipation performance must be well understood prior to integrating devices on a printed-circuit board (PCB) to ensure that any given device is operated within its defined...
Introduction
A cuvette is a small tube-like container with straight sides and a circular or square cross section. It is sealed at one end, and made of a clear material such as plastic, glass, or fused quartz. Cuvettes are designed to hold samples for spectroscopic measurement, where a beam of...
Introduction
Soil temperature is simply the measurement of the warmth in the soil. Ideal soil temperatures for planting most plants are 65 to 75 F (18 to 24 C). Nighttime and daytime soil temperatures are both important. The soil layer of the earth is critical in maintaining plant life, offering...
Introduction
How many times have you made a cup of coffee or tea and it’s been too hot to drink, and then by the time you get to it, it’s become too cold? :(
I love drinking tea and most of the times I have burned my mouth. :mad:
My Solution:
A Smart coaster to place your cup on, a coaster...
Introduction
My project is a Wifi temperature sensor. I was looking for a way to monitor my Smoker. The current wireless one I have, you had to be within 10 feet or it would be out of range. It kinda defeats the purpose of Wireless. I wanted something that I could go anywhere in and around...
