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19 Sep 2014

obr1583_1

HOPERF modules enable to gain a wireless data transfer or remote control of devices simply and without excessive costs.

A company, which specializes over a quarter of century on a given segment usually has experience and production capacities to develop and produce quality components. This is also a case of company HOPERF Micro-electronics and moreover – thanks to high production capacities the prices of their products are very attractive. HOPERF produces RF chips themselves, as well as read-made RF modules usable for virtually any application requiring a wireless control or data transfer, for example: remote keyless entry (RKE), control, security systems, telemetry, voice and data communication, control of processes and many others.
HOPERF modules offer besides a great price also a very high flexibility of usage. In contrast to many “fix-set” modules, RF modules HOPERF usually offer very wide possibilities to dynamically adjust many parameters, like for example: FSK/ OOK/ ASK modulation, possibility to work in a wide frequency range including free ISM bands 315, 433, 868 and 915MHz, while all main RF communication parameters are programmable.

In our stock can be found for example:

  • RFM65CW-433S2 and RFM65CW-868S2 – 433/868 MHz FSK receivers. RFM65CW offers a unique possibility to use narrow-band and also wide-band communication modes. RFM65CW is optimized for a low power consumption while maintaining high sensitivity.
  • RFM68CW-433S2 and RFM68CW-868S2 – 433/868 MHz FSK transmitters. It can be used without configuration from an MCU. However, in connection with MCU, it´s possible to change many parameters including output power, modulation format and a working channel.
  • RFM73-S – 2,4 GHz transceiver, including a high power +20dBm version RFM73P-S2.
  • RFM83C-433S1 – sophisticated 433 MHz ASK/OOK receiver including a version for low voltages RFM83CL-433S operating already from 2.1V
  • RFM85W-433D – 433 MHz ASK transmitter. Excellent features and simple usage. Specially designed for remote control, car-alarms etc. working on 433.92 MHz.
  • RFM12B-868S2P – multichannel 868 MHz FSK transceiver. RFM12B contains integrated functions of a digital data processing like: data filtering, clock recovery, data pattern recognition, integrated FIFO and TX data register. RFM12B enables to provide a clock for microcontroller.

HOPERF – universal RF modules for surprising prices - [Link]

17 Sep 2014

obr1565_1

“Hardwired TCP/IP” instead of a software solution? The result is higher performance and reliability. This time the webinar is focused on TCP/IP chips and modules from Wiznet

17.9.2014 – 10:00 CET

Programme of webinar:

  • WIZnet company and short core tech. introduction
  • “Serial-to-Ethernet” and “Serial-to-(serial) WiFi” by WIZnet chips and modules
  • Live presentation and hand on demo how-to-start and – use new S2E-modules
  • Q&A

SOS webinar: Internet of Things by one chip - [Link]

16 Sep 2014

obr1582_1

Fifteen types, three sizes and three strong features – these are the new DIN-rail power supplies Uno Power from company Phoenix Contact.

To be on the top in a segment of power supplies nowadays means above all high efficiency, low power consumption without a load (Standby) and compact dimensions. New series Uno Power from company Phoenix Contact meets all the most important requirements expected from a good power supply and gives a guarantee of a precise construction known from components from Phoenix Contact at the same time.

Main benefits:

  • high efficiency over 90% at full load
  • very low standby losses below 0.3W
  • compact dimensions and low construction height only 84 mm enables easy assembly into favorite 120mm installation boxes.
  • 15 types with output power of 25-100W, single output (5, 12, 15, 24 a 48VDC)
  • MTBF > 500 000 hrs

Uno Power are available in three sizes – in a width of 22.5/ 35/ 55mm x 90 x 84mm (wxhxd). High efficiency at maintaining compact dimensions results into a high energy density. In praxis it means that for example the 60W type is only 35mm wide.

Uno Power series is marked as „basic“, i.e. doesn´t provide various extra functionality, but on the other hand it provides everything necessary for majority of applications while maintaining an affordable price. Uno power is able to work with a global input voltage range 85-264VAC and is also suitable for applications outside (in a suitable box) – thanks to a guaranteed functionality already from -25°C.
Two 90W types are also certified according to UL1310/508 class 2, while the 2-phase type (24VDC/90W) is suitable for places, where only a higher input voltage is available (264-575 Vac).

Further information can be found in the Phoenix Uno Power flyer and in datasheets at particular types. Another power supplies and UPS can be found in the Phoenix Contact power supplies catalogue.

Power supplies Phoenix Uno Power – yes for three times - [Link]

12 Sep 2014

obr1580_2

Perhaps the hottest this-year novelty from company Wago – 221 series terminal blocks are here.

Not only in flyers and datasheets, but also in reality – in our stock. That´s why we bring you their description and mainly the first pieces to evaluate.

New series 221 is based on a well-proven technology of contacts – CageClamp-S and it´s partially similar to a favorite series 222, but 221 overcomes this previous series in many ways. Overall, the 221 excels in many aspects. Judge yourself:

  • it´s about 40% smaller than series 222
  •  it´s fully transparent from both sides, thus enables easy visual control of a proper wire insertion
  • testing openings are from both sides, what enables easy testing (for example by a multimeter) at various positions in installation boxes, motors,…
  • a feelingly lower force is necessary to operate the lever, in comparison to series 222
  • huge range of usable diameters from smallest (0,14mm2/0,2mm2), up to 4mm2
  • 32A/450V/105°C – usable for 230V and also 400V applications
  • possibility to use solid, stranded and fine-stranded wires
  • international approvals like ENEC, UL, PSE/JET, CQC, GOST-R
  • hollowed-out grips on the side walls for a better grip and easier manipulation during installation
  • funnel-like opening for wires, enabling accurate and comfortable insertion of even mild fine-stranded wires  

Similarly like series 222, even the new series 221 is available in versions for 2,3 and 5 conductors – 221-412, 221-413 and 221-415. Flat surface of actuation levers also provides additional space for labeling.

Do you know any simpler and more practical solution for any type of wire conductors?
New universal splicing connectors Wago series 221 offer unlimited possibilities of usage. They´re ideally suitable for installations in tiny spaces, connection of stranded wires with solid wires, inner connection in motors, pumps and other devices with possible vibrations.

Detailed description can be found in the Wago 221 datasheet.

High currents, small spaces – a breeze for Wago 221 - [Link]


9 Sep 2014

obr1579_5

Clamp multimeter UT204 measures reliably even in real conditions of nowadays mains supplies and for an affordable price moreover.

UT204 from company UNI-Trend is a near relative to the UT203. multimeter. Already UT203 provides a lot of user comfort and a very pleasant feature – measuring of a DC current without interrupting a measured circuit. However UT204 is different from its “weaker” brother in one essential thing – it enable measuring of a true RMS value of alternating signals (TRMS).

As we know, usual multimeters usually deploy a simple rectifier and an RC cell and they´re calibrated to show an effective value of AC voltage – supposing an ideally sinusoidal shape of a measured variable.

In many cases, a non-TRMS multimeter is fully sufficient, but still more frequently we meet devices, which by their power consumption significantly deform originally sinusoidal shape of a mains line voltage. A vast majority of new devices is equipped with switch-mode power supplies deforming a sinusoid, as they draw current for charging of input capacitors mainly on a top of a sinusoid. This situation is partially better at power supplies with a power factor correction (PFC), but even in these cases it´s never an ideal load. At any difference from an ideal sinusoid the accuracy of a common meter significantly drops down and the error can exceed tens of percents. Similar situation is also at various DC/AC inverters (for example 12VDC/230VAC), whose output is usually only an approximated sinus.

That´s why if exact measurement matters to us, it´s more certain to measure by a device equipped by a TRMS measurement. There are many types with this function on the market, and in a segment of clamp multimeters it´s for example the above mentioned UT204, which moreover offers a lot of other functionality for an excellent price.

Detailed information and comparison of UT203/ UT204 will provide you the UT204 datasheet and the UT204 datasheet and UT203-204 user guide. We keep Uni Trend UT204 as a standard – immediately available item.

UT204 is able to measure DC current and also True RMS - [Link]

3 Sep 2014

obr1578_1

WiFi module in a version with a pin-header significantly simplifies development of applications.

Basic version of the WiFi module WizFi250 from company WizNet is probably familiar to you from our article WizFi250 – WiFi quickly, easily and cost-effectively. The newest modification of this module is a version with a „H“ suffix marking a version with a pin-header.

As you already may suspect, it is a version intended for development, as the module doesn´t have to be soldered to a baseboard (by means of hot-air reflow). WizFi250-H can be beneficial not only for development, but also for usage in a target device, where it isn´t necessary to maintain the lowest possible construction height (baseboard + WiFi module). At the same time, this combination enables to assemble another components on a baseboard – below the WiFi module.

From the construction point of view, the WizFi250-H module is solved as a combination of the WizFi250 module with a small PCB with 2x double pin header (1.25mm). As for other features, the module is identical to the original module, that´s why they have the same datasheet WizFi250. WizFi250H can be used with the WizFi250-EVB development board. We bring you a comparison of both versions – with and without a pin header on attached pictures.

WizFi250H – when a small difference can help significantly - [Link]

31 Aug 2014

obr1577_1

New 1,4“ round display module from company 4D Systems with a round pixel placing is able to truly display various analog variables.

The evolution sometimes shows, that not everything “new” is automatically better than something „well-proven“. One of examples was also a „boom“ of digital panel meters, when it seemed for a while, that the life of analog panel meters is coming to an end. However it showed very soon, that an analog display has a huge advantage in a very fast legibility – i.e. already a brief look at a meter is enough to realize the position of a needle of a meter. Naturally, accuracy of reading of value from an analog meter is lower, than that of a digital (7-sgment) display. mainly at the beginning of a range, but this doesn´t matter in many cases and a certainty of a fast check, whether for example a given variable is in normal is often much more important.

Fortunately, classic electromechanical panel meter can be replaced by graphic displays thus obtaining a free hand at design of your own panel meter. At the same time, the combination of an analog and a digital meter can be created this way. Perhaps the best “replacement” for analog meters is a round display, which has a minimum space requirement in a target device. Novelty in this segment is the uLCD220RD (round) display module with a circle active surface (circle 220 px, 1,38“). Despite the fact, that it´s a small size display, it´s driven by the most powerful processor from 4D Systems – Diablo 16, which gives it a big versatility of usage, many interfaces and GPIO pins.

New version of a well known SW package for development of graphic applications – 4D Workshop IDE from 4D Systems already supports this new module even in the Visi Genie environment, enabling a „drag&drop“ development of application. In praxis a 220 px circle is able to display a considerable amount of information. On attached pictures we bring you a small demonstration of uLCD220RD module imaging.

Detailed information will provide you uLCD220RD and Diablo16 datasheets.

Round panel meter by means of a display? - [Link]

29 Aug 2014

obr1576_1

Pulse-controlled dimmers of lighting – Finder series 15 offer an elegant solution of lighting dimming controlled by a single switch.

Possibility to control level of lighting is beneficial at least from two reasons – saving of energy and naturally – we don´t need always a full intensity of lighting. At watching of media-projector presentation, TV, illumination of corridors, … it´s often desirable only to reach only a minimum level of illumination (but not a total darkness). Light dimmers are for a long period used for these purposes, usually based on a phase regulation.

Solution from company Finder is exceptional in a fact, that it´s usable with almost every light source – for example incandescent bulbs, 230V halogen bulbs powered by a toroidal or EI transformer, dimmable CFL lamps, as well as LED bulbs. The essence of Finder 15 series dimmers versatility is in the possibility to choose a method of a phase regulation – on the beginning of the sinusoid, or on its end (leading/ trailing edge – the difference is illustrated on the attached picture). The first method is generally suitable for electronic transformers for halogen bulbs and LEDs, the second method is better for classic transformers for low voltage bulbs, for 230V CFL and for 230V LED lamps.

As it uses to be, control of such dimmers is maximally simple – by a short push of a control button (switch) the relay (output) will switch on or switch-off. By a longer holding the button presses, we can change the light intensity from minimum to maximum and vice versa. Finder 15 series dimmers also enable to work in a mode with a switched on memory (after a repeated switch on, the last used level of intensity will be set) or without a memory (after switching on, the maximum intensity will be set). An above standard benefit is a possibility to adjust a minimum light intensity by a potentiometer, what´s important mainly at electronic transformers to avoid a possible blinking at very low intensities and it´s also at classic incandescent bulbs, as their efficiency drops down rapidly at very low intensities (duty cycles).  

All 3 produced types are available directly from our stock:
15.51.8.230.0404 – assembly to installation boxes, linear dimming (also available types with dimming in 10 incremental steps)
15.81.8.230.0500 – assembly to boxes or on a panel, linear dimming
15.91.8.230.0000 – DIN rail assembly, linear dimming

Available are various versions, detailed information and a comprehensive table about possibilities of usage of particular types will give you the Finder 15 datasheet.

One impulse is able to set intensity of luminance - [Link]

27 Aug 2014

obr1574_uvod

If you have an application, where you work with kilovolts and you need a suitable diode, we have a solution for you.

It´s not a quite common thing, to find a diode with a reverse voltage of more than 1000V in your “home-drawer stock”. But you develop a device, requiring a diode with a substantially higher reverse voltage and nothing suitable is by a hand …

The help is simple – use the DD1000 diode or in case of higher currents, choose a suitable type from the portfolio of High-voltage types from Diotec and send us your requirement. DD1000 features VRRM up to 10 000V, but in respect to its small dimensions and a construction, it´s suitable only for currents up to 20mA. This is sufficient for construction of various testers, voltage multipliers and similar. Should you require higher currents, many suitable types are available, which still maintain compact dimensions. For more powerful designs, it´s possible to use for example a cylinder type SI-A („hockey puck“) with a screw connection allowing for simple series connection (eventually also with RC cell).

Direct 10 000V where ever you need - [Link]

25 Aug 2014

obr1572_1

Pleasant actuation characteristics and reliable features of a push button switch Marquardt series 1840 make it attractive for all applications where you require control by a push.

Classic push-button switches are favorite for many decades, maybe also because they´re well known already from the beginnings of electronics. Probably, a nostalgia is not the only reason making them popular, but mainly an easy control, when even an unacquainted person knows, that it´s something “what has to be pushed” to change a status of an electric device.

Exactly a term “to change a status” is important, because at these switches it´s not possible (or not easily visible), whether it´s switched on or off. Though it´s true, that the majority of such switches is a little bit pushed down (lowered) in a switched on status, but the difference is often small. That´s why these switches are not suitable for applications, where from safety reasons it´s necessary to know tha status of the switch before connecting to a mains line.

Switch 1841.1301 (SPNC) belongs to a top in this segment and offers a really pleasant control and a quality switching system with a mechanical endurance of min. 100 000 cycles. 6A/ 250V is far sufficient for many applications and assembly is simple – by means of an M12 nut supplied. An interesting supplement is also a neoprene cap integrated with an M12 nut, enabling to gain a considerable resistance to water and dust. Also available are 2-pole versions – 1842 and also versions functioning as a push-button (momentary).

There are 2 nuts supplied. One is “regular” – hexagonal and the other one is a round type intended to be used as a top cover on a front panel. Further detailed information will provide you the Marquardt 1840 datasheet.

Marquardt 1841 – above standard classics - [Link]



 
 
 

 

 

 

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