Series 47000, designed as a direct replacement of classic transformers brings more than you might expect.
Myrra 47xxx SMPS overcome supersedes classic transformers by an overall efficiency, power as well as by a standby power consumption. With the same pinout as 1W EI30 transformers, it provides a 5W power, or up to 5,4W at some models. All this for the price comparable with a classic solution, but with smaller dimensions, without any additional components and without problems with cooling. Next to basic features represented to you in a separate article we bring you a more detailed description of particular versions.
47000 series power supplies feature a very low standby power consumption –only 200 mW or 300 mW respectively – at regulated types. With the 4000VAC isolation (input/output), they´re ready for a classs II – reinforced isolation . Operating ambient temperature is from -25°C to Ta, which can be found in a table at each type. To a simple usage also contributes a shortcut protection and a thermal shutdown with automatic recovery. More information will provide you the following tables and the Myrra 47000 datasheet.
Save energy and production costs with Myrra 47000 switch-mode power supplies - [Link]
To switch a few low voltage sources you can use high voltage switch with SNMP support or this small box and control it via USB
USB Relay Board – Switch devices using USB - [Link]
The following display features eight 7-segment displays arranged in two rows of four digits. The on-board MAX7219 driver enables you to easily add eight 7-segment LED displays to your project using only 3 I/O pins of microcontroller. The major advantage of using this board is the time-division multiplexing operations required for continuous refreshing of the display digits are performed by the MAX7219 chip, thereby keeping the microcontroller free for doing other pressing tasks. It is suitable for displaying two variable values simultaneously in a project, such as displaying temperature and humidity, or current and voltage, etc.
8-digit seven segment LED display with SPI interface – [Link]
After discovering how cool RGB LED strips are, I decided to make a bandwidth monitor for the Internet connection at our place. Since there are many users active on the same connection there’s bound to be conflicts where someone is gaming and another is downloading, causing the ping to fluctuate (even with QoS HTB-init set up).
Using RGB LED Strips to Monitor - [Link]
Electrical engineers of the University of Princeton are working on a cheap solar-powered charging system that can be printed on plastic and that transfers the produced electricity wirelessly. The solar cells are made from amorphous silicon (a-Si), a non-crystalline form of silicon. Crystalline silicon (c-Si) is much more efficient when it comes to converting sunlight into electricity but a-Si has the advantage that it can be processed at much lower temperatures (75 °C against 300 °C for c-Si), allowing it to be printed on plastic sheets.
The electric circuit is made out of the same material as the solar cells. And although a-Si has a lower electrical performance than c-Si, when it comes to producing cheap electricity-generating plastic sheet which can be put up anywhere, a-Si is best. By making the charging system available at a large scale, the Princeton engineers aim to have wireless electricity everywhere. [via]
Omnipresent Sun-Powered Wireless Charging Stations - [Link]
With their high-resolution touchscreens, ample computing power, WLAN support and telephone functions, Android smartphones and tablets are ideal for use as control centres in your own projects. However, up to now it has been rather difficult to connect them to external circuitry. Elektor’s AndroPod interface board, which adds a serial TTL port and an RS485 port to the picture, changes this situation. In this webinar Bernhard Wörndl-Aichriedler shows how easy it is to connect your own circuitry to an Android smartphone using the AndroPod interface.
AndroPod – Bridging Android and your electronics projects - [Link]
The enclosure is from Adafruit - about perfect, although it’s a pretty tight fit. The display is an OLED character display. (It’s a little quirky, and it draws more power than a regular LCD, but it’s really bright and clear.) The EM-406A GPS mounts on the top of the case. I drilled a small hole that shows the LED on the GPS module which lets me know when I have a fix. The IR detector is also on the top, so I can use a TV remote to set the parameters. The bottom has the on/off switch, (and now a piezo switch) and a slot that allows removal of the microSD card.
GPS Geiger Counter Data Logger - [Link]
The Approach used here is just an active Voltage Divider. The GND of the Output just has to be centered between the positive and the negative Supply. This can be achieved using a Power Opamp such as the L149 (4A) or the L165 (3A) or any
equivalent type beeing available at your local hardware store. The Schematics below shows how to wire it …
How to transform an Unipolar Power Supply into a Bipolar Power Supply - [Link]
PCB terminal blocks series MVS15x-IT from Euroclamp provide an added value in the form of an easy connection of wire leads even in tight conditions. Thanks to a construction slanted in 35°, they fit exactly into conditions, where horizontal, neither vertical terminal blocks aren´t the right solution.
A relatively common situation – a construction of your device doesn´t allow you to use vertical terminal blocks and at horizontal ones you face the problem with components placed too close to a terminal block, thus preventing a proper installation of wire leads.
MVS15x-IT series slanted in 35° is the solution for such and many other cases. Available are versions with 5mm as well as 10mm pin spacing. Types with a 5mm pitch can be found in our standard stock offer. Basic components are 2 and 3-pole terminal blocks MVS152-5-IT and MVS153-5-IT. Also available is the MVS1510-5-IT, representing a price convenient alternative, when you need to create a row with 10 and more poles. Terminal blocks are made from PA (polyamide) UL94-V0 class, nickel-plated copper alloy and the screw is from a galvanized steel. Detailed information will provide you datasheets at respective types.
Neither horizontal, nor vertical – slant terminal blocks are the right ones! - [Link]