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28 Oct 2014

obr1609

SOS Webinar @ 2014.10.29 10:00 – 11:30 CET

UDOO is a powerful single board embedded SBC based on the powerful Freescale i.MX6 chip, which offers complete and powerful platform for your applications.

  • General introduction to the UDOO Board
  • Hardware features
  • Main aspects regarding the creation of projects with it
  • main aspects of creating a Linux or Android project with UDOO boards
  • Examples
  • Q&A

SOS webinar – Looking for a powerful platfom for your Linux applications? - [Link]

26 Oct 2014

obr1608_5

Proximity sensors working on an induction principle are able to detect ferrous and non-ferrous metals very reliably.

For those of you, who already work in this field, there´s everything clear for you probably and you know well, that induction sensors are literally one of the keystones for an industrial automation. For all of you, who´re not familiar with these important components yet, we bring this short description.

Induction sensors use the fact, that metal parts placed near an oscillator coil are able to change condition in a given oscillating circuit. Such a change (stopping of oscillations) can be reliably evaluated and to gain a confirmation about a presence of a metal subject in the sensor´s range. Induction sensors typically work on a frequency of hundreds of Hz up to a few kHz.The bigger the size of a coil (and also a sensor), usually the higher is the resulting sensitivity of a sensor (sensing range). But at the same time a bigger sensor usually works on a lower frequency, that´s why even a maximum sensing frequency is lower. From this reason it´s usually better to use a smaller type to detect fast moving objects.

Omron, as a top class producer of industrial sensors has in its portfolio a lot of series of induction proximity sensors, in numerous versions. A typical representative of well-known widely used sensors is the Omron E2A series. E2A has increased detection range and it´s encapsulated in a body from a nickel pated brass (M12-M30) or a stainless steel (M8). A lot of versions and diameters can be found here (M8/M12/M18/M30), versions with connectors or wire leads and also shielded and unshielded versions.

„Shielded” means, that a metal sensor body reaches up to the front (sensing) portion of a sensor. In case of non-shielded versions the metal package is shorter, i.e. the plastic part seems to stand out of the sensor body. The result is that a non-shielded version is more sensitive even to sides (x), what can be advantageous in some applications. On the other hand, shielded versions provide possibility of a very close assembly of sensors next to each other. Series E2A has a high resistance to dust and water (IP67/ IP69k), shocks, vibrations, heat as well as electromagnetic interference.
E2A series is primarily intended for ferrous metals, but with a smaller sensitivity it´s also usable for non-ferrous metals. However in the Omron offer can be found series specially intended for aluminium and other non-ferrous metals and even types which are non-sensitive to ferrous metals.

A typical output of an induction sensor is a transistor (open collector) – PNP or NPN with protection components (diode + transil). Output transistor can be used to connect to an intelligent control unit, or for direct switching of circuits, or switching of relays.

Overview of Omron offer and hints for usage can be found in the Omron induction sensors application guide. Detailed description of the E2A brings the Omron E2A datasheet. Answers to many questions can be found on the Omron proximity sensors FAQs webpage.

Induction sensors don’t need a touch, they’re satisfied by proximity - [Link]

23 Oct 2014

obr1607_1

Do you like tools usable for several jobs? Gas soldering tool Dremel VersaTip 2000 in a “Decorating kit” edition certainly belongs to such record breakers in the versatility of usage.

Multifunctional gas tool Dremel VersaTip 2000 usable for technical but also creative works was introduced to you in our articles. Soldering, melting, hot-cutting, welding and wood burning (pyrography), bending of metals, application of heat shrinkable insulations, releasing of junctions locked by an anaerobic sealant (bearings and screws) and now also various creative works can be done with a special edition „Decorating Kit (DremelVersaTip2000-6)”. This set also contains a few additions to develop creativity of a user (of families :-)), namely: embossing pen, 3 embossing powders, embossing stones and 2 wooden sheets with pre-cut shapes to try this technique.

Embossing pen contains a slow-drying glue. If we put some embossing powder on to an ornament painted by this pen, it will get sticked in a thin layer. Then it´s only necessary to heat it up by a hot air from the VersaTip tool and an attractive color layer is done. Possibilities of usage of this technique are wide – after some exercise it´s possible to use it for example to mark your own „hand made“ products giving them a mark of unique. In general, the embossing lacquer (glue) can be applied also by a suitable rubber stamp (sold in specialized shops), what can give us a relatively very quality, sharp result.

To refill the DREMEL VersaTip, it´s advisable to use a clean liquid buthane. Detailed description will provide you the VersaTip Instruction Manual.

DREMEL® VersaTip in a limited edition serves for work and also for fun - [Link]

20 Oct 2014

obr1605_1

At the same time you can be sure of a set temperature and a long-term stability that´s why it´s suitable even for the most demanding usage.

Production of company Weller (member of Apex Hand Tools) represent a synonym for top quality soldering stations intended even for a continuous 24h usage. In the Weller portfolio can be found several series, from which we can choose the right type for our usage. Right to the top belong for example series WX, WX2, WXD, introduced to you some time ago. This time Weller comes with an innovated version of station WSD81 – WSD81i.

WSD81i soldering station hides behind a relatively plain classic design a top level technique. WSD81i uses „Silver line“ technology of a heat transfer to a relatively short tip with a copper core, ensuring excellent heat transfer and excellent temperature accuracy. LT series tips usable with WSD81i provide a wide selection for absolute majority of joints. Thanks to a precise construction, they have a prolonged lifetime and even thin tips lead heat very well and we´ll succeed with them even on solder pads, which appear to be small, but they require a lot of heat (ground connections with a lot of vias on a PCB and similar).

Platinum thermal sensor built-in right beneath an exchangeable tip ensure a long-term stability, what results in a fact, that WSD81i doesn´t require calibration even after a long-term operation (IPC compliant).

WSD81i also contain electronics checking usage of a soldering tool and in case of rest, the station goes to a standby mode (adjustable in a range of 1-99min). If we decide to change a real temperature of a tip, we can make it by means of an “offset” function. This can be advantageous for example in plants, where workers were used to set say 380°C but at WSD81i even 360°C would be sufficient (thanks to excellent heat transfer to a tip). In this case a worker doesn´t have to differ which soldering station he uses and he can use a unified setting for all types.

At the same time, it´s possible to lock a station by your own code or to set a “window” in which a temperature can be changed.

Comparison of three main technologies and also a comprehensive description of particular tips can be found in the „Weller soldering tips” brochure. Detailed description of the WSD81i station can be found in the WSD81i user guide.
WSD81i is available in 3 basic versions (80W tool + dry/ wet cleaning stand or a 65W tool + dry cleaning stand), from which we bring you type T005 32 946 99, i.e. 80W tool WSP80 + stand for wet cleaning (sponge).

Weller WSD81i soldering station doesn´t need a calibration - [Link]


19 Oct 2014

obr1604_1

Professionals, school laboratories and amateurs can now gain this new, extra affordable digital MSO oscilloscope in a limited offer.

Probably you may have noticed, that company Hameg became a member of Rohde&Schwarz group and new oscilloscopes already carry only an R&S logo. However the name of series HMO remains, which represents for several years products with an excellent price/ performance ratio. This time a new member was added to the HMO series – HMO1002, further decreasing a price level while maintaining many features, which usually can´t be found in this price level. For a standard recommended retail price of 798 Euro it provides really a lot.
Moreover, now we offer you a special limited offer in which you can purchase this oscilloscope for only 610 Eur. The offer is valid for the first five pieces and only until stock sell-out.

The 2-channel 2×50 MHz oscilloscope offers a full MSO functionality and after buying an external logic probe HO3508, we´re able to watch analog and digital signals on one screen at once (ideal for measuring AD/DA converters and similar). With a 1Gsample/s sample rate (512Mhz/ channel), 128k FFT, function generator and various math functions, it provides wide possibilities for analysis of circuits. Unique in this class is a 50 MBit/s arbitrary generator, allowing to create 4 bits wide and 2k long custom samples. At the same time, this generator can be set for example in a way to obtain 25 MHz signal (clock) on its output.

Another unique in this price level is a possibility to precisely measure even weak signals thanks to a real sensitivity of 1 mV/division.
HMO1002 is also available in 2×70 MHz and 2×100 MHz versions, but perhaps the mos interesting is a possibility to upgrade the basic type (with 2×50 MHz inputs) anytime later to 70Mhz or 100MHz bandwidth by means of SW Vouchers.
Detailed information will provide you the HMO1002 brochure.

It´s hard to resist to R&S HMO1002 oscilloscope for 610 Euro - [Link]

19 Oct 2014

Who is the winner of umodule demoboard from Linear technology? In addition to getting to know the winner, you can also watch the video record from webinar…

Linear Technology’s family of DC/DC Module products simplifies your analog design. By integrating the DC/DC controller, power switches, magnetic, and a modest amount of capacitance, uModules power products will save precious space on the PCB and reduce the solution weight, development time, BOM qualification and procurement effort. You could find this out during webinar about Linear technology modules.From all of those who filled in our questionnaire after webinar we have drawn winner of the uModulu demoboard. The winner is František Bulko from EVPÚ a.s.
Congratulations to the winner.

Your way to simple and efficient power supply design with Linear Technology - [Link]

17 Oct 2014

obr1602_uvod

Compressed gas for cleaning – Dust cleaner, brings huge savings for the price of small limitations.

The name of this article might also be like „Dust Off or Dust Cleaner? Both are the sprays – compressed air for dust removal. Dust Off is a well known, long-term well-proven spray for cleaning from dust and other loose dry particles. Dust Off provides absolute safety in a form of non-flammability. However, this indisputable plus is also reflected in a price.That´s why we bring you also a cheaper alternative – spray Dust Cleaner, which provides practically the same service like Dust Off, but for approximately only a 1/3 price. Even though compressed (liquefied) gas Dust Cleaner is flammable, but it represents much cheaper solution for all cases, when there´s no risk of ignition. for example when we work with a switched-off device, which isn´t hot at the same time and there´s no source of sparks near. That´s why it´s suitable for example for cleaning of:

  • plated copper boards (disconnected from a power supply)
  • micro-assemblies, servo-motors etc.
  • optics, lenses and precision mechanics
  • PC and other communication devices
  • fans and heatsinks
  • fiberglass cables connections
  • connectors

Similarly like Dust Off, even the Dust Cleaner produces a strong air jet, which is in majority of cases strong enough to remove various dry contaminants. It finds its place everywhere, where other cleaning methods (for example with liquids) are not suitable, or they might leave various residues. Detailed information can be found in the Dust Cleaner and also Dust Off datasheets.


Dust Cleaner will blow away dust for a 1/3 price - [Link]

15 Oct 2014

obr1600_1

80 dB acoustic signal at only 3V power supply and a really miniature size place this new component into a top class.

Belgian company Sonitron and its top-level products ar probably familiar to you from our articles and from our offer in this segment. We continue in increasing of standard stock types and this time we have here an extraordinary interesting type – SMA-13LV, interesting mainly for low-voltage applications. Series of buzzers marked as “SMA” is known by its variousness, as we find here types with loudness of 75-98 dB, THT and SMT vesions, and versions with a stable, as well as intermittent signal. Various izes from 13 to 30 mm with a pitch of 7.5 to 20.32 mm enable to select the right type for a given application. In general, bigger types provide a more loud signal, but it depends on a concrete type. This series is suitable for general use – everywhere, where a reliable buzzer is necessary, including industrial conditions.

For a succesfull use, it´s only necessary to connect a suitable supply voltage – usually in extremely wide range (for example 1.5-15V). Usually, on the upper end of a supply voltage range we get the highest loudness and at lower voltages we receive a higher lifetime.

Very similar is also the SMAT series (transducers), which in contrast to the SMA series doesn´t contain a driver, that´s why it needs an extenal electronics.

For really tough conditions, the Sonitron SAP. series is suitable. These are buzzers for various usage in traffic, for example as a reverse movement indicator (danger of close approximation). They excell in extreme rigidity, what make them widely used even in avionics, miltary and trucks. SAP series has a specifi usage, that´s why we keep these types as items upúon request.

Another novelties in our standard stock offer can be found below this article. Detailed information can be found in datasheets at particular types and in the new Sonitron 2014 catalogue.

Piezo buzzer Sonitron SMA-13LV deploys maximum from a minimum - [Link]

13 Oct 2014

obr1510_p390

RFID keyboard emulators are able to significantly simplify tracking of goods.

“Replacement” of a keyboard in a form of an RFID module connected to a USB port works very simply – UID of every tag, which will appear in its range will send to a computer – the same way as if we typed it in by a keyboard. SL040A also enables to choose, whether we want the reader to send only data, or also a „CR“ character after every UID (as if an Enter key was hit). It means, that if we already have a software to type in open (for example Excel), the reader itself will fill the cell with data and move the cursor to another cell. SL040A is even able to read data (not only UID) from Mifare tags.

SL040A is also interesting by one feature – on a request from our company SOS electronic, the producer started to produce also the black version SL040A black. Thanks to the above-standard close relationship with the producers, we´re able to supply you even various special customized versions.
Detailed information will provide you the SL040A user manual.

SL040A will load it to you directly into a table sheet - [Link]

11 Oct 2014

obr1598_1

Transformer soldering tool Toolcraft SP200 is a useful complement even if you already have a quality soldering station.

In praxis, it´s possible to heard various opinions on “transformer soldering tools”. Usually this is the first type of a soldering tool with which a young electro-technician begins. It´s small, a tip heats up quickly, doesn´t take a lot of space, it´s easily transportable and last but not least it´s also price – affordable.
From the point of view of a professional working with SMT components it can be reproached, that it´s not suitable for SMT components of 0603/ 0402 and similar, it creates a pulse at switching on (weak ESD safety) and it has no soldering tip temperature control.

Despite this, many of us are glad to return to it sometimes, because it´s simply “handy” :-). It provides a magic of an easy application of a solder and a colophony in a single step by a classic way, when we take a bit of a solder on a hot tip and after switching off (during cooling down) we immerse a tip into a colophony. This way we get prepared one “soldering dose” on a tip, suitable for soldering of poorly solderable joints (depending on features of a solder and colophony). At the same time, it´s very convenient in case we need to have one hand free for holding a soldered component, wire, …

Even a small stability of a tip temperature can be bypassed by experience (not too long heating) and the risk of sensitive components damage can be considerably decreased if we always switch on a soldering tool before touching a given component, and similarly – switch off after taking away a tip from a component.

It can be said, that a quality soldering station is irreplaceable for a serious work, but there are many cases, where a classic pistol-type soldering tool alike. In respect to an extraordinary affordable price level of the Toolcraft SP200 and also other in our offer (10-20 Eur), this tool is a suitable complementary tool for every electro workshop and for a work in places, where a transport of a bulky soldering station might be quite impractical.

Toolcraft SP200 has a more robust tip, suitable also for bigger joints. On the opposite side, soldering tools of the series ETP use classic relatively thin tips usable even for small soldering tools.

Think about a soldering tool for every occasion - [Link]



 
 
 

 

 

 

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