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29 Mar 2014


Connectors of the PV, SV and SH series are available in a huge amount of versions and sizes, that´s why you´ll certainly find here a suitable type for you.

A very frequent requirement for a simple and reliable connection of wires to a PCB is actual about as long as the world knows plated copper boards. There are many solutions and producers, thus a choice of suitable type is usually a question of your preferences, requirements of a device, availability, offer of distributors,….

Even in our store can be found various solutions from world-class producers like TE Connectivity (Tyco, AMP), Wago, Phoenix Contact and also from company Euroclamp. Just the last one mentioned – Euroclamp, focuses mainly on PCB terminals, what is reflected in a wide offer. From our experience we can confirm a quality and reliability of these connectors. To the most favorite ones belong series PV, SV and SH, what are plug-in connectors (terminal blocks) for PCB and the mating types for a cable. They´re available in pitches of 2.5mm/ 2.54mm/ 3.5mm/ 3.81mm/ 5.0 mm/ 5.08mm/ 7.5mm/ 7.62mm/ 10.0mm/ 10.16 mm. So as to make you a selection of a right type easier, we bring you a few hints and explanations regarding their description.

PVxx – main type for a PCB (connector with pins).
Example: PV02 (02-24= number of poles) – 5.08 (pitch of pins) – V (V-vertical, H-horizontal)- M (M-modular, P-closed)

SVxx – connectors (female) for a cable – intended for connection with the PVxx series
SV02 (02-24= number of poles) – 5.08 (pitch) – P (P – rear wire connection, F- frontal wire connection) – * (additional code, for example „K“= version with side screws)

SHxx – right angle cable connectors (female) – intended for connection with the PVxx series)

A very useful “complement” of these series is also the SFxx , series, i.e. – a terminal block enabling a “wire to wire” connection (with types SVxx or SHxx). It can be very convenient if we for example want to jump some module and to maintain input and output leads interconnected (enable to make for example various versione of the same product. A novelty in the Euroclamp portfolio is also the PF series – for a PCB (female connector), enabling connection with PF – (male connectors).
A common feature of all PVxx connectors is a relatively high current handling ability – for example 12 (16)A/450VAC at types with 5.0 or 5.08mm pitch and a maximum wire cross section of 4/2.5 mm2 (solid / stranded wire). Body of connectors is made of a rigid self-extinguishing polyamide (UL94-V0) and the connector itself is made of nickel plated copper alloy. Basic color of these connectors is green (RAL6032) but upon order they´re also available in other colors (grey, black, blue, red, yellos, brown and other). A considerable advantage is also a wide range of operating temperatures of -40 to +130°C.

Types with a wide pitch (for example 10mm) are physically the same with types with a half pitch ( 5mm), they only differ in omitted pins and naturally the maximum allowed voltage is higher (750VAC). Perhaps the best idea about possibilities of these „plug-in“ connectors will give you attached pictures. Detailed description can be found in the Euroclamp short-form catalogue, in the main catalogue Euroclamp, as well as in datasheets at particular types.

Do you already have solved a connection to a PCB? - [Link]

27 Mar 2014


Bare wires going from a tested device do not have to mean a problem or require a long time to connect to a power supply.

Who wouldn´t know it – a tested device on a workbench has only wire leads (without any connectors) and we just want to connect it to a power supply simply and reliably. If you don´t want to laboriously connect banana plugs to wire leads (what we surely don´t want if the test is supposed to last only a while :-)) we have only a possibility to use screw terminals on a given laboratory source. But usually neither this isn´t an ideal solution, as the openings in such terminals are usually quite small and if we want to put a wire only “between two pads” – it usually falls out at tightening…

Fortunately, there is one very handy component – „WAGO banana plug“, i.e. banana plug with a spring clamp into which it´s possible to insert a wire immediately and without any tools. Similarly simply we´re able to loosen it in a fraction of second – by pressing a body of a plug. The principle of a terminal is the same as for example in lighting connectors Wago 224 series.

We believe that you´ll like this useful helper and you´ll find it belonging to a “must have” category. On stock we keep three color versions (black, red and blue) as well as a set of 50 pcs Wago 215-111 (mix of 5 colors in 10 pcs). Upon request we´re able to supply you any other color version.

Detailed description can be found at particular types.

Simplify your work at development and testing with WAGO banana plugs - [Link]

25 Mar 2014


Finder monitoring relays are able to effectively signalize a fault status in a mains line and to prevent damages or undue wear-out.

Too high or too low voltage, phase loss or a wrong phase rotation are conditions commonly occurring in an industrial environment. Even though a phase rotation is usually stable, but only one improperly connected lengthening cable is sufficient …. These fault conditions harm to typical 3-phase devices like for example motors and as for a voltage out of tolerance – this usually doesn´t make well to any device. Devices like compressors and gas discharge lamps even don´t like too often switch on/ off (cycling) in case of fault conditions in the mains power line. There is a solution for all these cases – in a form of a simpler of a more sophisticated monitoring relay.
In our offer can be found high-quality components from company Finder – a producer with long-term experience in production of relays. To components intended for monitoring of mains line belong for example series F70 and F71, from which we keep in stock these types: – 3-phase electronic monitoring relay. Monitors low voltage (adjustable), high voltage (adjustable), window mode (low + high voltage), adjustable time delay of switching (trip), selectable fault memory, phase loss, phase rotation. Comprehensive indication of all statuses by means of three LEDs – compact 3-phase electronic monitoring relay. Monitors phase rotation and phase loss. – 3-phase monitoring relay. Monitors low voltage (adjustable), high voltage (overvoltage), adjustable time delay of switching (trip), selectable fault memory.

All above mentioned types have on their output a small relay (6 or 10A), which can serve for controlling of a main contactor or directly for switching of other devices in case of faulty status. Adjustable time delay at types 70.31 and 71.31 functions in a way that after detection of a fault a relay “waits” for a selected time and if a fault still persists, the relay will switch on an output contact. In other words – monitoring relay ignores faults shorter than a selected time (0.5-60s at type 70.31 and 0.1-12s at type 71.31). This function is very useful to prevent an undue frequent switch on/off of devices, which are able to withstand a short-time fault status without a damage.

Memory function is also a useful function, which – if active, will prevent a repeated start of a device. This is very important for example at devices, which mustn´t be switched on without an operating personnel.

Detailed description can be found in datasheets at particular types.

Relay Finder will let you know, when one phase is missing … – [Link]

23 Mar 2014


Do you have an application where a black switch is not suitable? We have an elegant white one for you.

Rocker switches are available in a vast majority in a black version. When we take a look at catalogues of renowned producers we´ll usually find there mainly black types and only a few white ones. However a switch in a black version can be advantageous in many applications like office devices, PC, “white” (home) goods, lighting, equipment, but also in many other devices having enclosure other than black, or where just a white version can be an interesting design element. Even in our electronic branch it´s particularly true, that a “package sells” and an aesthetic design of a device can be one of the factors of a market success.That´s why you can find in our stock two novelties – a white rocker switch 1832.3311 ((DPST, 20A/250VAC) as well as a round 1881.1105 (SPST, 12A/250VAC). Both novelties belong to well proven series with widely known properties. Detailed description can be found in 1830 and 1881 series datasheets.

Recently we added into our standard stock offer also many other types from Marquardt and you can find them below this article.

Black or white? - [Link]

21 Mar 2014


Water, dust, mud, chemicals,… multi-pole industrial connectors Hirschmann CM will handle it easily.

Plastic- or a metal connector? Majority of designers will probably place on the first place in a virtual “quality chart” a connector with a metal body. It´s often true, but it needn´t be always so. Apart from the fact, that a metal connector is usually more expensive, often – mainly in a corrosive environment a metal body isn´t advantageous. Modern high-strength plastics, often glass-reinforced reach strength fully sufficient to create a rigid and reliable connector. This can be seen for example in connectors from company Hirschmann (a member of Belden group) CA3 or CA6 series, which we introduced to you in our article A connection resistant to dust and water – Hirschmann CA series and also in multipole connectors CM series, which we´d like to introduce to you in this article.

CM series is in general very similar to the CA series as for the design, robustness and materials used. Connector body is from the fiberglass reinforced polyamide, contains silver-plated contacts and has IP rating 67. Also range of operating temperatures is very high – from -40 to +90°C.

Main difference is, that these connectors are compatible to MIL-C 5015 resp. VG 95 342 and are available with 4-17 poles (4,5,6,6+PE,7,14,17). All versions of the CM series handle 50V AC/DC and 4-10A currents, depending on the type. CM06 are F connectors (socket) for a cable and mating types are CM02E – i.e. Male panel connector. The only exception are connectors CM02L (6 poles+PE) with a metal body. Also available are CM02SD covers and a sealing CM02D.

On stock we have the biggest – 17 pole version CM06EA20-29S and CM02E20-29P.

Detailed information will provide you datasheets at particular types and a list of available types can be found in the Hirschmann catalogue.

“17 in 1″ – these are the multi-pole connectors Hirshmann CM - [Link]

19 Mar 2014


Low profile, higher safety and a wide spectrum of power ranges ensures, that in the TBL series you´ll find the right type for your demands.

Quality AC/DC power supplies for industrial automation and equipment of buildings (intelligent houses, …) are one of the fundamental supposals of a successful and reliable application. But how to choose the “right one”? Sure, there´s a lot of criteria and one of them is the requirement to fit into flat – low profile distribution boxes. This requirement is well met in the Traco TBL series, with the height of only 54,5 mm (after attaching to a DIN rail). TBL series provides a high safety (safety class II) and meets for example UL 1310 class II requirements (15-90W models). A big advantage is a wide range of operating temperatures -25 to +70°C (up to +60°C without power derating).

TBL series is available in 5 power ranges from 15 to 150W and also available is the 60W backup source (UPS) TBL-BC comprising circuitry for battery management. If necessary, it´s also possible to adjust output voltage (5-5,2V, 12-16V, 24-28V) – for example to compensate long conductors to a target device. In respect to an overall design and a high reliability, the TBL series is also suitable for supplying of security devices (alarms).

Detailed information will provide you the Traco TBL datasheet, TBL series models list and installation instructions.

Traco TBL power supplies fit into every distribution box - [Link]

15 Mar 2014

Dave reviews the DIYINHK 1080p USB soldering microscope. A hacked Microsoft Lifecam webcam with optics enabling a large working distance and good depth of field.
Also showing off the Tagarno FHD ZIP Full HD 1920×1080 60fps USB 3.0 30x optical zoom vision inspection microscope using Youcam 6

EEVblog #590 – DIYINHK 1080P HD USB Soldering Microscope Review - [Link]

10 Mar 2014


It´s surely not necessary to remind that any device can fail. Failure of a component, overload of a component (underestimated sizing), external influence and many other reasons are daily causing failures of devices. If the result of a malfunction is only an intermediate shutdown, it´s let´s say a better case. But if a device malfunction could cause further damage or even fire, it´s surely worth to make everything possible to prevent it.

A typical component used as a complementary – independent protection from overheating is a thermal fuse. It is a cheap but very useful component, which opens (disconnects) a circuit after exceeding certain temperature. It is a “one shot” component, i.e. after its activation it remains open and the fused circuit is disconnected (the fuse must be exchanged). It´s suitable to choose such fusing temperature of the fuse, as we consider to be really faulty, which otherwise can´t occur in an ordinary operation. Production processes enable to produce thermal fuses in a wide range of temperatures and so fuses Microtemp from company Thermodisc, which we keep in stock, are available in a range of 72-257°C (opening temperature). It´s a really wide range enabling to use a fuse for example for fusing of other component (for example a thermal fuse thermally joined with a transistor heatsink) but also for guarding an air temperature inside a device. These fuses operate on a principle of melting a small plastic pellet inside a fuse, what will cause release of a spring and a consequent disconnection of contacts.

A substantial advantage of thermal fuses Thermodisc is a maximum current up to 10-25A/250VAC depending on a type. On stock we keep the G4 series with a max. current of 10A/250VAC. Small dimensions enable to use a component similarly like any ordinary component. It´s only necessary to be careful at assembling (overheating) especially at low-temperature types.
Details regarding a correct assembly as well as an overview and tips for a correct use of thermal fuses can be find in the Thermodisc application guide. Thermal fuses are also available in other packages, or also with tabs (Fast-in). Finally, we can mention, that to reach the highest protection level in critical application, it´s ideal to incorporate several types with a slightly different fusing temperature in series.

They act only ones – right then, when it´s really necessary… – [Link]

6 Mar 2014


High efficiency, low standby power consumption and a power reserve, all this can be gained with a new adapter from our portfolio.

Minwa NR120P150PGS/E+ is in fact an “ordinary“ adapter with a fixed output voltage 12VDC/1500 mA. But it´s worth to mention, that it meets everything, what we usually require from a modern mains adapter:

  • modern design (SMPS)
  • high efficiency
  • low standby power consumption (<0.3W)
  • meets all latest regulations – EuP2, ErP,…

And finally a bonus – outstanding price. Adapters from company Minwa are in general always price-affordable, but here it is even more obvious. When we compare a one level weaker adapter NK120P100PGS/E+ (12V/1000 mA) with NR120P150PGS/E+ we´ll find, that for the price higher +14 (already at purchase of one piece) we´ll gain +50% power. So if you have a device requiring up to 1.5A current, or you use a 1A adapter at almost 100% and you want to gain some power reserve and probably a longer lifetime of an adapter, you can do so with minimum expenses.

Plus 50% of power for a scant one Euro? - [Link]

1 Mar 2014


Long term reliable contact without interference, creaking and hum, moreover in a beautiful coat – these are the Neutrik / Rean connectors.

Connectors have in general one interesting feature – there are many similar or almost the same connectors on the market. Audio connectors are not exception in this. Even though they look the same, many times there are huge differences in price and mainly in quality. If we supposed, that every producer designs and makes his products likewise responsibly, then the cheaper one should be probably a good choice. Naturally, in praxis it isn´t so.

A real difference between a quality and a low-class connector can be known only at a close-detail investigation and comparison, and ideally after a real testing in praxis.
Quality audio connector must be made of quality materials and also with a high precision. Naturally, if a producer wants to achieve success on a market, it´s often simply impossible to use a too expensive connector, which would over-price the whole device.

That´s why you can find in our store the Neutrik / Rean connectors offering a high-end class for a very reasonable price. Company Neutrik specializes already for almost 40 years in audio connectors and in general connectors for audio/ video studios, equipment of concerts (backstage) and similar, that´s why also in loudspeaker connectors, power supply, Ethernet,…
In the Neutrik products can also be found connectors Rean representing even more affordable price level while maintaining a very high quality. Already a short look at details of Neutrik/ Rean connectors will tell us, that we´re dealing with precision connectors. A matter of course is a detailed documentation with an exact description of electrical features and materials used. A comprehensive overview about available types will give you the Rean catalogue and the Neutrik catalogue (22MB). To many sophisticated connectors like for example NYS373 there are also available assembly instructions.

Uncompromising quality audio connectors for a compromising price - [Link]





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