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12 May 2014

Hantek_PPS-2320A_7570-600x400

Alan Parekh of Hacked Gadgets writes:

Thanks to Circuit Specialists for sending in this 3 chanel power supply. The Hantek PPS 2320A sure packs in a ton of features for the price. The video below goes through the unboxing of the power supply and a quick run through its features. Overall it functions quite well, there are a few questions that need some clarification. I will have a look through the manual and reach out to the guys over at Circuit Specialists if I can’t find the answers.

[via]

Hantek PPS 2320A review - [Link]

10 May 2014

Li-Ion_battry_charger

By Tahar Allag, Wenjia Liu:

Cell phones are a good example of how functionality and performance have both increased significantly in portable devices over the last few decades. They have become more complex and can do many basic tasks as well as any computer. The extra functionality that has transitioned the smartphone from a phone-call-only device to a multipurpose portable device, which makes it more power hungry than ever before.

The internal battery pack is the main source of storing and delivering power to portable-device circuitry. Batterycharger ICs are responsible for charging the battery pack safely and efficiently. They must also control the power delivery to the system to maintain normal operation while plugged in to wall power. The battery pack is required to store a large amount of energy and be charged in a short amount of time without sacrificing weight and volume. The increased charge and discharge currents, as well as the smaller physical size, make the packs vulnerable to physical and thermal stresses. Therefore, battery chargers are no longer required to perform just as a simple standalone charger

AppNote: Battery charging considerations for high-power portabledevices - [Link]

10 May 2014

BQ2419xBy Jing Ye, Jeff Falin, KK Rushil:

Designers of rechargeable battery-powered equipment want a charger that minimizes charge time with maximum charge current by maximizing the power taken from the supply without collapsing the supply. Resistances between the supply and the battery present a challenge. This article explains how to design the charging circuit to achieve the maximum power from the adapter despite the undesired resistances between the supply and battery.

AppNote: Extract maximum power from the supply when charging a battery - [Link]

10 May 2014

GPS-shield

By Boris Landoni @ open-electronics.org:

By coupling a standard NMEA GPS receiver and an Arduino board we created a super simple and effective Arduino GPS logger. This device allows you to trace the route taken by a person or vehicle (or any other moving object) by simply doing a periodic caching of location points coming from the GPS unit. As the logger saves the list of records (containing data on recorded positions) on a microSD memory card, you can then move the data onto your computer and keep track of your trip. You can use tracked data to help project such as OpenStreetMap to grow and include new areas (www.openstreetmap.org).

An Arduino powered, easily extendable GPS Datalogger - [Link]


10 May 2014

obr1520_1

We bring you basic useful accessory of every development and testing workplace – measuring and testing leads in the best available quality.

Whether you measure daily or only sometimes, probably you know, how significantly helpful various accessories can be. Or otherwise – how much time can consume unreliable measuring cables or other accessories, when after a long investigation for a mistake in a design you´ll find, that everything is OK, only a measuring cable had a bad contact …

For everyone who has a will and time to assemble measuring tools we have measuring tips, clips, bananas and other accessories from company SKS (Hirschmann-SKS). For those of you, who better prefer ready-made, professionally made measuring cables, we have an elegant solution in a form of the cables themselves, as well as measuring sets. Such cables and sets are especially suitable for professional workplaces and for a mass usage in assembly and testing.

Company SKS is a long time focused for measuring accessories and its products under a mark SKS-Hirschmann are known by their quality and ergonomics. From the wide production portfolio of SKS can be found in our store for example cables with a banana and a socket for a header MALN series), safety measuring leads (MALSW series), measuring leads with bananas on both sides (MLN), measuring leads with measuring tips, as well as measuring sets – PL2600 or PMS series. All measuring leads are highly flexible and with a thick insulation.

For workplaces with a high risk of damage of measuring leads from for example a hot soldering tip or other heat source are an ideal accessory silicone testing leads series MLS SIL. A „complementary” but very valued feature of silicone testing leads is also their extreme flexibility resulting in a very comfortable work. These leads we´re able to provide you upon order. Detailed information about measuring and testing equipment can be found in the Hirschmann SKS catalogue.

SKS testing lead will be your favorites - [Link]

10 May 2014

radiation_detector_soldered

by Kalle Hyvönen:

I saw a cool app-note from Maxim that described a gamma-photon detector which used a regular PIN-diode as a sensor. The actual circuit looked simple enough so I decided build it, you can never have too many measurement instruments right?

The detector in itself is pretty simple, just some op-amps and a comparator. I decided to build it with all the bells and whistles so I included a digital potentiometer so you can adjust the reference voltage to the comparator via an SPI-bus. I also used a 5V reference shunt as the reference for the op-amps and the comparator to keep the circuits behaviour more consistent. I didn’t have any adjustable capacitors with an SPI bus so I decided against using one (instead of C4, changing the capacitance changes the gain).

A radiation detector with a solid-state PIN-diode sensor - [Link]

10 May 2014

by Paul Watson:

This beehive weight scale uses a TI LDC1000EVM inductance processor circuit to measure the weight of a Beehive, by detecting the the change in resonance due to a change in inductance, as the change in weight on the scale occurs. The processor sensed and measured differences; outputs are sent to a collocated laptop computer via a USB port and displayed by the TI software GUI on the screen. For this design concept, it was decided to design for a maximum of 160 lbs. The detailed PDF available below shows a range scale of desired performance, however the LDC1000 was not well understood by me at first, so this concept was a design to fit the unknown performance of the LDC1000, but adjusted to make it work.

Beehive scale uses inductive sensing - [Link]

10 May 2014

A quick look at the new Siglent SDS2072 super phosphor digital oscilloscope.
A quick look at the bench power supply project and a component list.

T4D #100 – SIGLENT SDS2000 and Power Supply Project - [Link]

10 May 2014

A short video sharing the excitement of unboxing a new Tektronix MDO3000 Mixed Domain Oscilloscope!

Unboxing the Tektronix MDO3000 Oscilloscope - [Link]

10 May 2014

Detailed look at methods for driving LED matrix displays, including simple LED displays and full-colour video screen modules.

Driving LED matrix displays with an FPGA - [Link]



 
 
 

 

 

 

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