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Find bellow an Android TCP client extension
that implements a very simple socket; note that its operation is performed 'one-shot', which means that only one command is sent ( and its respective response, read ) at a time, and then the socket connection is closed. So, be aware that it is not a...
In this blog post i will share my Graphical Lcd libraries with you which are written for xc8 compiler in MPLAB-X development environment.
The libraries functions are inspired from mikroC functions and i tried to keep most of the functions similar to the one available in mikroC compiler.
Some...
Spring-loaded pins are rapidly finding new applications in modular product design. Also referred to as SLCs (spring-loaded connectors), this product resolves many of the manufacturing issues like misalignment, coplanarity, and tolerance stack up that can plague traditional pins and sockets...
The following attached file contains an SSH Client extension
which I made for my own use, but it may also be useful for users of the MIT Application Inventor 2 (AI2) community, or even to the AppyBuilder community (code intrinsically compatible for the last one, but not tested). This is just the...
Time Domain Reflectometry is the analysis of conductor lines (interconnects)by sending a pulsed signal into the conductor and then examining the reflection of that pulse. A TDR transmits a short rise time pulse along the conductor. If the conductor is of a uniform impedance and is properly...
For
I/Q signal
I/Q imbalance
carrier leakage
you can refer to the PDF file
Introduction to I/Q signal
As mentioned above, for SSB modulation, in reality, there will be at least three tones in the spectrum.
One is signal(i.e. desired sideband), another is undesired...
I/Q Imbalance
As mentioned above, for SSB modulation, there should be only one desired sideband in the spectrum in theory.
Nevertheless, in reality, there will be at least three tones in the spectrum.
As shown below, one of the three tones is undesired sideband, so-called image ...
Single Sideband Modulation
Conventional double sideband(DSB) modulation can be considered wasteful of power and bandwidth because they contain a carrier signal and two identical sidebands.
Conversely, single sideband(SSB) modulation, as the name implies, uses only one sideband to provide...
We can also analyze it in terms of E/H fields .
As illustrated above, both microstrip line and stripline radiate E-field outside.
Thus, we need ground plane to absorb their E fields.
And larger the ground plane,
lower the ground impedance, more the E-fields that ground plane...
According to my previous experience,
wideband matching from 700 MHz to 2700 MHz (GSM/WCDMA/LTE) can be achieved by mere 3 components.
If the frequency range is 2.4, 2.1, 1.8, 1.6, 0.9 GHz,
and you have 5 components,
just do the wideband matching from 0.9 GHz to 2.4 GHz
To start...
For a Direct-conversion(Zero-IF) receiver, RF signal down converts to BaseBand signal near 0 Hz directly.
Let’s assume there are 2 tones , f1 is interference, f2 is signal, and their frequency are close, i.e. f1 = f2.
If LNA IIP2 is not good enough, f1 and f2 will compose IMD2...
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Using a Xilinx IP in your design without generating it using the Coregen flow.
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I will...
EDAboard's sister publication, designworldonline.com has several "Tips" sections covering a variety of topics from power to microcontrollers to motor control. We'd like to encourage you to check out some of these helpful tips and share them with your colleagues. To get you started, I'll post the...
It is a common concern of technicians to adapt equipment manufactured on countries whose frequency of electric public mains differs from its local, so that a modification becomes necessary, but depending on the size of equipment, the cost of the transformer may be the largest when compared to...
GLCD is one of the most interesting device in electronics works. People working with microcontroller are very interested to work with it. And me? Yes! I’m very much interested to it… I did some works professionally, but I felt that you may need a help to make your own big font work with GLCD...
HSM-20G is one of the most common humidity and Temperature sensor. This sensor is fully analog type. The outputs are analog voltages rather than any digital signal.
The datasheet indicates that the output pins need some extra devices with it. here is the connection diagram:
From the...
Generating Sine wave is very demanded job in power electronics field. So do to me too. I read some topics over the internet and found many ways to generate a sine wave. As most of you are really interested in generating sine wave so I’m writing today about it here.
There is some different ways...
Using the PIC32MX250F128B, I decided to make a simple audio player. I wanted to play back good quality audio from a large memory space - a microSD card. So, I made this WAV player that can play back 16-bit 44.1kHz WAV files with 12-bit stereo audio output. Of course that's not all it can play...
With power LED's mounted boards with adequate copper surface or aluminum surface area (~1 sq.in/Watt) cool emission of light can be adapted to almost any fixture with mindful avoidance of glare.
I put these together one day for Winter Seasonal exterior lighting using surplus boards cut down to...
AND = Application Note Document (On Semi)
DN = Design Note (On Semi) .pdf format
These are all State of The ART LED's SMPS designs that may have started as University Grad Student/ Prof level designs, perfected by OnSemi and finally made their way into new chips with intelligent design...
In Part I of this blog, we saw that we can construct two partially correlated signals, x1(t) and x2(t), as:
\[
\; \; \; \; \; \; \; \; \;\; \;\; \; x_1(t) = \sqrt{P_1}s_1(t) \\
\; \; \; \; \; \; \; \; \;\; \;\; \; x_2(t) = \sqrt{P_2}ρ∗s1(t)+√(1−|ρ|2)s2(t)ρ∗s1(t)+(1−|ρ|2)s2(t)
\]
where P1 and...
Note: This blog is split into two parts because edaboard limits the number of pictures and equations per blog. The second part can be found here: [link].
Introduction
It is often useful to be able to generate (real or complex-valued) signals with specific cross-correlations. In the simplest...
I was recently asked how to estimate the frequency of a noisy sine wave over a short capture. In this context, 'short' means the total capture duration relative to the period of the sine wave. So we may have, at most, a few periods of the sine wave (or, at worst, less than one period). Here is...
Coding Spacing is commonly generally defined by the range between data transitions to prevent DC content of data. Bi-Phase which is self -clocking but reliable and used in early Telephony 1.544Mb/s repeaters then tri-level coding was used. Similar starts in ethernet coding were used.
Magnetic...
Power measurement methods for RF
**Peak** = instantaneous maximum read with storage memory ( digital or Analog )often measured with Log Amplifiers calibrated in dBm for 50 or 75 Ohms
**Average** = time interval averaged over specified interval
Both above are computed by voltage detection...
Design site has error in the design calculations for RMS >Peak.
In the end the RMS voltage of the transformer should only be slightly more than the LDO Vdc if the optimal parts are selected.
Assuming you want 5V,1A regulated choose LDO regulator with minimum drop otherwise 2.5V typical may...
Boost Regulator :bsdetector:
:bsdetector: Bi-Colour Latch
PWM analog clock :bsdetector:
:bsdetector: DIY Garden Fence LED Light shades
:bsdetector: Blue Pool LEDs coated in clear epoxy
All diodes have a threshold voltage, Vth which is basically the voltage...
Hello Everyone!
This presents an attempt to measure phase difference between two sinusoidal signals in simulink.
There is no existing block in Simulink for that.
I have made frequency as a Global Parameter.
LSNI-BT02
The previous post discussed a simple transistor based inverting MOSFET driver ie. LSIN-BT01. It consisted of a Level-Shifter stage followed by a transistorized totem-pole output stage. This post discusses a NON-INVERTING version of the previous driver. For quick reference this...
LSIN-BT01
Much of the work that I had done till now was confined to my mind or scattered everywhere in bits and pieces. The difficulties were soon evident. So I promised to write. With an year of experience (academic) in power-electronics, I quickly realized that MOSFET gate drivers were...
This article is intended to be a quick guide on calculation of transformers used in AC voltage stabilizers which employes series topology. Such model is rarely used in low power equipments due to the relatively more complex control system required for drive the switching devices, but is...
We often plot some data on a graph and wonder if there might be a simple mathematical function to describe what we see:
In many cases, a polynomial approximation would be particularly useful. That is, we want to describe the line in the form...
MIT finds 15-year-old scouring trash bins for parts.
When MIT discovered Kelvin, he was living in utter poverty. But that didn't stop this engineering whiz kid from building something amazing.
Introduction
I didn't want to buy an expensive variable power supply for my small, low-power projects, so decided to make my own. I couldn't find much inspiration online, so I thought I'd write up my design in detail here in case it helps anyone else. Circuit schematics, layout, source code...
Equipments such as Inverters and Rectifiers employ power modules as IGBTs, MOSFETs and TRIACs based on compact packages (modules). These components are mounted just above heat sink structure, and unlike PCB based packages, offer the possibility for assemble adopting an alternative approach...
Multilayer Inductor
An inductor constructed by layering the coil between layers of core material, the coil typically consists of a bare metal material( no insulation), this technology is sometimes referred to as "non-wirewound", the inductance value can be made larger by adding additional...
When dealing with displays which haven´t character pattern at desired size, we need to insert character maps in the code program. Once draw entire table is a task somewhat painful, the next step is take a search on the Web for some available map file.
However, after find it and put the map on...
Requests for sample C code to deal with a matrix keypad is a recurrent question, what motivated me to share here some tips on an alternative implementation, not so widely employed.
This code brings some benefits:
Allows reading combinations of multiple keys pressed at same row: 8(4 keys)...
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