Cymbet Corporation announced the availability of the EnerChip CC CBC3105 smart solid state battery. The CBC3105 combines the manufacturer’s EnerChip battery with integrated input power conversion, battery management and regulated output capabilities. The device is a smart rechargeable solid state battery Uninterruptible Power Supply (UPS) in a chip that provides power backup to microelectronic devices when main power fails. It provides power supply monitoring and switches over to the internal solid state backup battery when the supply drops below a set threshold. The components can provide anywhere from several hours to several weeks of backup time. [via]
An Uninterruptible Power Supply in a Chip - [Link]
The paperless office clearly is an illusion as people continue to print and photocopy incredible amounts of emails, memos and other useless documents that end up in the bin. So if we cannot get rid of paper in the office, maybe we can remove the ink from it and then use the paper again?
An engineering team at the University of Cambridge in the UK has figured out how to erase pages by vaporizing common toners using a laser-based technique that doesn’t damage the underlying paper. The key idea was to find a laser energy level that is high enough to vaporize the toner without destroying the paper on which it is fixed. After many experiments it was found that 4-ns pulses with a wavelength of 532 nm (green light) worked best. [via]
Unprinter removes Ink from Documents - [Link]
The LT3791 is the latest in Linear Technology’s growing family of high power, high performance LED drivers designed to simplify power delivery to high brightness LEDs. The 4-switch buck-boost controller topology operates from input voltages above, below or equal to the output voltage while delivering constant currents from 1A up to tens of amps. The LT3791 also provides ±4% LED current accuracy and ±1.5% output voltage accuracy to ensure the highest performance LED solutions.
- 4-Switch Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT
- Wide VIN Range: 4.7V to 60V
- Wide VOUT Range: 0V to 60V (55V LED)
- ±2% Output Voltage Accuracy
- Synchronous Switching: Up to 98.5% Efficiency
- ±6% LED Current Accuracy: 0V ≤ VOUT < 60V
LT3791 – 60V 4-Switch Synchronous Buck-Boost LED Driver Controller - [Link]
The WX series consists of microprocessor-controlled soldering stations with 1 or 2 channels, intended for soldering irons up to 200 W. The stations have a multilingual backlit anti-static touch-display with enter button and circular finger guide for menu navigation. [via]
WX2021 Soldering station – A new era in soldering has begun - [Link]
Build a generic instrument, the Digital Voltmeter using the classic DVM chip, the Intersil ICL7135 and the 8051 compatible microcontroller. Wichit Sirichote writes:
I got the idea to design the digital volt meter when I visited the scientific lab in school at Bangpain district. I thought the lab should provide the generic instrument that student can use it for many experiments. One of the generic instrument is a digital volt meter. For example, when students make a simple battery with lemon, they can measure the EMF and learn the different of using various kinds of electrode. So I got back to 1982, when I was a university student, I do remember the Intersil ICL7135 very clearly. This year 2011, almost 29 Years, the classic integrating type analog to digital converter is still interested. With a cheap price and easy interfacing, I think I will design a cheap digital volt meter with microcontroller to provide serial interface similar to the Fluke45. Two channels is good for scientific experiment. The serial port RS232 is also nice for interfacing to the PC. Let us see the prototype of the meter in Figure 1. The display for each channel is 8-digit 7-segment LED. It is cheap and very reliable.
Dual Channel Digital Volt Meter - [Link]
LONDON – Mar. 26, 2012 – element14, the first collaborative community for design engineers and electronics enthusiasts, powered by global electronics distributor Premier Farnell [LON:PFL], has today announced its Design Flow Series webinars will be kicked off by Raspberry Pi founder Eben Upton on 4 April.
In the first session Raspberry Pi fans around the world have a chance to see how simple it is to program one of the credit card sized computers. The possibilities of what can be done on a Raspberry Pi are only limited by the imagination, so to help users get up and running quickly, in this live session, Eben will talk through the simple set up procedure, how to download and install the Operating System on the SD card, run the boot up script, use the script editor and begin to create applications using the Python scripts that are pre-supplied with the software download.
Raspberry Pi founder demonstrates how to program the mini-computer - [Link]
Raj from Embedded Lab describes in his latest tutorial the theory of a very basic digital capacitance meter and its implementation using a PIC microcontroller. It is based on the principle of charging a capacitor through a series resistor and determine the time required to charge it to a known voltage. The built-in analog comparator and Timer2 modules are used in this process. The meter can measure capacitance from 1nF to 99.99 uF.
Digital Capacitance Meter using a PIC Microcontroller – [Link]
The 2200 series combines an oscilloscope, spectrum analyser and arbitrary wave form generator in a compact but powerful PC instrument. Now the series is being extended to include three new models 2206, 2207 and 2208. The new models have increased bandwidth, higher sampling speeds, bigger buffer memories and external triggers. [via]
PicoScope 2200 Entry Level USB oscilloscope - [Link]
From a soldering station intended for everyday use, we naturally expect reliability and a robust resistant construction. Soldering station Diametral SBL530.1A is a proven device meeting stringent requirements of a professional production.
Micro soldering station SBL530.1A is equipped with a fluent temperature regulation by a potentiometer. Setting by a potentiometer is very quick and sufficiently accurate, because a a well readable LED display shows a set-up temperature, as well as a real temperature. After turning by a potentiometer or after pressing a button, the display shows a set-up (desired) temperature. The display will switch back to displaying a real temperature after approx. 3 seconds. A soldering tip reaches a set-up temperature in about 30-120 seconds from switch-on of the soldering station, depending on a set-up temperature.
Advantages / Features: :
- professional soldering station for uninterrupted operation
- fluently adjustable temperature from 80 to 450°C
- 9 types of interchangeable tips
- switching of a heating element in zero level
- possibility to connect a cut-out automatics
- dimensions 92 x 105 x 155mm (H x W x L)
A positive feature of the soldering station is electronic switching of the heating element when intermittent current of a power line is passing zero, what eliminates possible interference or other unwanted influence to a mains power line. You can choose from 9 tips types, from thin ones, suitable for SMT components, up to relatively thick, suitable even for soldering of bigger joints. You will also appreciate thicker soldering tips at soldering of components or leads to bigger pads of multilayer PCBs, which take away the heat from a soldered joint very quickly. Micro soldering station is placed in a rugged metal chassis with a surface treated by a powder enamel – RAL 9005 black colour. SBL530.1a is also equipped with a transformer adequately dimensioned for uninterrupted operation.., cut-out automatics, which switches the soldering station into a stand-by statement after a set-up time of inactivity. That increases safety, decreases power consumption and prolongs soldering tips lifetime.
Soldering station with an outstanding price/performance ratio - [Link]
Gases like hydrogen sulfide and ammonia are dangerous gases, which however can be easily detected.
Hydrogen sulfide and ammonia are relatively common gases arising at an organic material decay, in sewage conduits, poultry farms, and in a technological process of many industrial segments. Despite of the fact, that both gases are irritative and feature a pungent smell, intoxications by these gases aren´t rare. Risk is also increased by a fact, that already after a short exposition to these gases, they subjectively appear to be much less concentrated.
For a production of devices detecting these gases are suitable Figaro sensors TGS8xx series. TGS825 is sensitive to hydrogen sulfide already from 5 ppm concentration. TGS826 is sensitive to ammonia, as well as ethanol, iso-butane and hydrogen. TGS826 is able to detect ammonia already from 30 ppm concentration, that´s why it is suitable for all critical safety-related applications in refrigeration systems and in agriculture. Both sensors use SnO2 based semiconductor sensors featuring high sensitivity and a long lifetime. Sensors are made on a ceramic base resistant to severe environment.
Usage of both sensors is further facilitated by the SR-2 socket. SR-2 is usable for all Figaro sensors TGS8xx series and it enables a troublefree exchange without a necessity of relatively demanding desoldering from a PCB.
Figaro sensors feature a long lifetime, high sensitivity and selectivity to target gases. Despite a long lifetime, in an environment with a high dust nuisance or an aggressive environment, it can be necessary to exchange a sensor after some time. This is also the case of applications where highest reliability and accuracy is required. An easy sensor exchange is also welcome at development or at the change of a sensor type. SR-2 socket, with an over 1000 MOhm insulation resistance and 700V AC insulation strength, is suitable for all applications. Producer also guarantees lifetime of at least 150 insertion cycles (exchanges of a sensor).
Protect health of people by Figaro sensors - [Link]