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]
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]
Ray Wang wrote a blog post review of the Hi-Link HLK-RM04 Serial-to-WiFi module:
It’s a pretty easy-to-use and low-cost solution to add WiFi capability to Arduino or similar microcontroller boards. Basically it allows you to receive/send Ethernet buffers through serial RX/TX pins. Programming wise, it’s similar to using the standard Arduino Ethernet shield. The module can also function as a WiFi router for changing configurations etc.
First impression on HLK-RM04 serial-to-wifi module - [Link]
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]
To reinforce the company’s commitment to the Internet of Things Intel have announced the XMM 6255; a complete 3G solution to enable cloud connectivity via the mobile phone network. In a blog post the company announced that it was commercially launching the XMM 6255 modem to provide a wireless solution for the billions of ‘smart’ and connected devices that are expected in the coming years. The modem incorporates Intel’s SMARTI UE2p RF transceiver layered onto a 3G power amplifier providing up to 7.2 Mbps download and 5.6 Mbps upload speeds. The XMM 6255 fits into a 300 mm2 footprint, claimed to be the smallest such solution on the market. Intel has targeted the XMM 6255 at IOT applications such as healthcare monitors and advertising.
3G Modem Targets the IoT - [Link]
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:
22.214.171.124.0404 – assembly to installation boxes, linear dimming (also available types with dimming in 10 incremental steps)
126.96.36.199.0500 – assembly to boxes or on a panel, linear dimming
188.8.131.52.0000 – 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]
Alan Parekh of Hacked Gadgets writes:
Thanks to GearBest for sending in this Opus BT-C3100 V2.0 Intelligent Battery Charger for review. at a quick glance this charger might look like any other charger that you see at the grocery store. Your generic store bought brand probably also has 4 charging bays for AA and AAA batteries, it probably has 2 charging circuits which places 2 cells in series to charge them, it most likely has 2 charging lights which just turns off when charging is done. If you leave the batteries in your generic charger you will most likely have batteries that have been overcharging or running down. Also your generic charger can probably just charge one chemistry of battery.
When you have a closer look at the Opus BT-C3100 V2.0 Intelligent Battery Charger you can see how this system differs from your every day generic battery charger. It can auto detect and charge NiCd, NiMH and Li-ion batteries. It charges each cell independently preventing bad cells from interfering from other cells from charging properly. Forget charging lights, this has a full LCD display that provides tons of status. It will monitor batteries that are left in the charger and keep them topped up and ready to go. From here the features go on and on. Don’t let the small package fool you, there is a ton of smarts and features built into this small package.
Have a look at the pictures below and in the video for a look inside the charger. The construction is a dual sided SMD load, the construction looks very professional. The battery contact spring tensioners work well and the connection to the PCB has been beefed up with a thick metal bar…
BT-C3100 intelligent battery charger teardown - [Link]
Parekh of Hacked Gadgets did a teardown of a MESR-100 ESR meter:
I purchased a MESR-100 Meter from eBay for around $55 USD shipped to my door in Winnipeg (Canada). The meter came well packaged in a retail box, this is a nice change from many other items from China that are simply wrapped in bubble wrap and stuffed into a padded envelope. Inside the box was the meter, two short meter leads and a manual. Pressing the red power button for a few seconds powers the meter, it is ready to use after about 3 seconds. The display is a backlit LCD display, it does appear that the backlight is on all the time. The display is nice and bright and has a good viewing angle, there are two hot spots near the bottom of the display which is probably due to the location of the backlight LEDs but it doesn’t effect display readability.
MESR-100 ESR meter review and teardown - [Link]
New 200mm fans EBM-Papst will cool down your devices while not making a lot of noise.
Maybe you already belong to users of top-level fans from EBM-Papst. This time we bring you another hint for well-proven types – considerably powerful with a 200mm diameter. The types are:
● A2E200-AH38-01 – 9 blade fan with sickle-shaped steel blades, driven by a powerful motor M2E-068 BF with power of 64W/ 230V/ 50Hz. Maintenance-free ball bearings and a thermal protection contribute to a long lifetime of the fan. The motor requires to connect an external capacitor 1.5uF/400V. The fan is suitable for a continuous operation (S1) and it can be mounted in any position.
● W2E200-HK38-01 – 7 blade fan with a full round nozzle from an aluminium alloy and with same motor unit as above-mentioned type. The fan features a very easy installation – mechanically and also electrically, as it also contains a capacitor (1.5uF) assembled to a body of the fan. The fan is suitable for a continuous operation (S1) and it can be mounted in any position.
Naturally, these fans are universally usable not only for cooling of electric devices, but also in air conditioning (HVAC) and in food industry.
How do you cool in these hot days? - [Link]