Home Blog  

3 Jul 2013


Mats continues his challenge of designing one PCB every week. In week 12 he came up with BB Prince, a small multi-purpose utility for your solderless breadboard:

This PAW is a small utility board for your breadboard that have some of the most common things you need when building a microcontroller-based project on the breadboard. It’s a small (2.5×1.5cm / 1×0.6”) PCB with a Power Led, a Reset button with a pullup and goes low when pressed, a Signal button with pulldown that goed high when pressed and two general Indicator Leds that are connected to ground via resistors.


BB Prince – breadboard utility PCB - [Link]

3 Jul 2013


The LT3081 is a rugged 1.5A wide input voltage range linear regulator with key usability, monitoring and protection features. The device has an extended safe operating area (SOA) compared to existing regulators, making it ideal for high input-to-output voltage and high output current applications where older regulators limit the output. The LT3081 uses a current source reference for single resistor output voltage settings and output adjustability down to zero volts. Output current limit can be set externally with a single resistor. This regulator architecture, combined with low millivolt regulation, enables multiple ICs to be paralleled easily for heat spreading and higher output current. The current from the device’s current monitor can be summed with the set current for line-drop compensation, where the output of the LT3081 increases with current to compensate for line drops.

LT3081 – 1.5A Single Resistor Rugged Linear Regulator with Monitors - [Link]

3 Jul 2013


3D printing a battery itself is a remarkable achievement. A 3D printing a battery as small as a grain of sand is a giant hurdle forward in both, 3D printing and battery technologies. That is exactly what researchers working at University of Illinois and Harvard have done. To achieve this process the researchers had to create their own custom 3D printing technology. Although there are many types of materials 3D printers can use, most print objects using small liquid droplets, which build upon one another to create the object from the bottom up. For the researchers this process was not sufficient to achieve their goals. Therefore, they designed a 0.03mm nozzle, which releases the liquid materials continuously in a fashion, which is similar to toothpaste being squeezed from its tube. In addition, the researchers also invented a 3D printing material that is electrochemically active, which ultimately allowed the printed battery to store and release charges.

Micro-battery is 3D printed - [Link]

3 Jul 2013


Paul over at Dorkbotpdx has written an article about his DMX lighting sequence player:

Portland CORE effigy at Burning Man will be using DMX controlled lighting this year. At least that’s the plan, but a low-cost and low-power way to automatically play the lighting sequence (without a PC) is needed. Here’s a little board I made for the purpose.


DMX lighting sequence player - [Link]

3 Jul 2013


Expanding of international company SOS electronic in B2B segment of industry led to the fusion with a strong strategic investor – company named Conrad. SOS electronic is a distributor of electronic components for industrial production which operates in 5 European countries with the focus on Central and East Europe (CEE).

1st July 2013, Košice, Slovakia, Hirschau, Germany – In order to strengthen the expansion of electronic components distribution to the industrial production of company, SOS electronic acceded to an acquisition with a strong partner – Conrad.

Conrad is expanding its business strategy to create a new segment of industrial customers and to expand its product portfolio and services for this segment. This acquisition occurred also in order that SOS electronic as a company established in this area helped in expanding this strategy.

Conrad joined SOS electronic not only as an investor but mainly as a partner…

Holger Ruban, director of Conrad Business supplies, comments on the acquisition: ” „The Conrad Group will benefit from SOS electronic’s 22 years experience with industrial customers.  People from SOS bring us valuable know-how which we can use together in the field of marketing, purchasing and sales for our strategy of building a new customer’s segment.

SOS electronic as a company and brand will stay independent and will still be strengthened. Nothing will change in the method of ordering, deliveries, our pricing policy or any kind of communication with our customers and our company will still carry out all of the duties under the SOS electronic heading. The dismissal of staff is not planned. However, the opposite is true. In the future, the new investments to support Eastern European markets are planned. Read the rest of this entry »

2 Jul 2013


An IQRF intelligent wireless technology and MESH networks can be successfully utilized in a record short time, even with only basic electronic skills. Intelligent houses, data transfer, remote switching of lighting, these are only few examples of usage of modern technology called IQRF. A wireless data transfer usable for example to control various devices, can be in general reached by four basic ways:

1) RF chip, microcontroller, development of your own SW

2) RF module

3) RF module with an operating system

4) RF module with an intelligent super-structure (layer)

Time and knowledge necessary to reach a final product at above-mentioned ways are illustrated in the following pictures:

The IQRF technology enables to use third and fourth from the above-mentioned possibilities.  Probably the most interesting is the 4-th alternative, which is practically immediately usable with a minimal effort by means of a so called PDA protocol (Direct Peripheral Addressing). DPA is a protocol enabling to create, control and modify even large wired and wireless networks and bi-direct data transfer without a (classic) programming. DPA protocol consists of 4 bytes (3+1) containing an address in a network (NAdr), peripheral number (PNum), a command specific for a given periphery (PCmd) – for example switching of an LED and alternatively also the 4-th byte – data (up to 58 bytes/1 packet). For various peripherals, it is possible to define a so called Hardware profile (HWP), which translates a given DPA packet to a specific action of a given device (for example after pressing a push-button a packet will be sent to a destination device with information to switch on the light).

The basis of the whole IQRF system is the miniature RF transceiver modules working on the 868 MHz frequency (alternatively 916 MHz) with an ultra low power consumption and adjustable RF power.  All setting and routing of the IQMESH network runs automatically, literally by “one click” and the data transfer itself functions on the principle of transmission from one module to another, until the given information reaches a destination transceiver (Node).

Detailed information can be found in the forthcoming  SOS webinar about the IQRF , in the documents  IQRF_Technical_GuideIQMESH and on the  www.iqrf.org website.  In case of interest, please contact us at info@soselectronic.com.

IQRF – a wireless technology which breaks barriers – [Link] 

2 Jul 2013

Who else but Dave can take an hour and a half to review a multimeter! Agilent’s new 34461A/34460A 6.5 digit bench multimeter.

Agilent 34461A Multimeter Review - [Link]

2 Jul 2013

Designing and measuring basic and precision opamp peak detector circuits.

Peak Detector Circuit - [Link]

29 Jun 2013


15W toroidal transformer  with a very low  radiated magnetic field and high efficiency is an excellent choice for audio and other sensitive devices. 

In our stable stock offer can be from now found a quality small transformer 70053K from company Talema meeting even high requirements for supplying of sensitive devices. Switch mode power supplies are an excellent choice for the most of applications, but for supplying of input stages of audio and video devices as well as various measuring devices, AD converters, … it´s still the best choice a classic transformer. And if it has to be a transformer, then the one with as good specification as possible.

From this point of view, toroidal transformers a are a step in front of transformers laminated from EI, C and similar plates. A uniform layout of primary and secondary winding along the magnetic core of the toroid ensures an excellent magnetic coupling between windings a very low strayfield, which could influence surrounded components in a device.

Transformers from company Talema are top quality products meeting stringent requirements for safety, reliability and low losses.  Type 70053K with the 2x15V output (2×18,5V open circuit) is ideal for supplying of audio and other devices requiring +-15V symmetrical voltage. At lower current demands, it is also suitable for +-18V output, as an AC voltage will get increased after rectification and filtering at capacitors.
The transformer has a double primary winding, thus being able to operate at 115 or 230V (i.e. in European conditions the windings have to be connected in series). A big advantage is that secondary windings are separated, and so they can be connected even in parallel in order to gain a higher current in cases when we only need a single supply. Application of the transformer is very simple – by soldering pins into a PCB. The transformer also features a blind plastic nut M4x6 for increasing of mechanical stability.

Detailed information can be found in the Talema 70000 datasheet as well as in the series  70000 overview.  In case of interest, please contact us at info@soselectronic.com.

A transformer suitable even for mimosas - [Link]

27 Jun 2013

Free online design, simulation, parts search tools - [Link]





Search Site | Advertising | Contact Us
Elektrotekno.com | Free Schematics Search Engine | Electronic Kits