John Donovan writes:
Alternative energy sources deliver small amounts of power intermittently, and at times power levels may not match the needs of the applications that depend on them. Some form of energy storage is needed, though the solution will vary with the demands of the application. This article will examine various energy buffering solutions, including small form-factor batteries, thin-film batteries, and supercapacitors, highlighting both their specifications and the applications to which they are best suited.
Storage Alternatives for Energy Harvesting Applications – [Link]
A Switch Mode Power Supply circuit collection from Linear Technology. It covers 12 basic SMPS circuit categories: Battery, Boost, Buck, Buck-Boost, Flyback, Forward, High Voltage, Multioutput, Off Line, Preregulator, Switched Capacitor and Telecom. [via]
Switching regulator circuit collection – [Link]
Announcing APM 2.5! – DIY Drones. Jordi writes –
I’m pleased to announce the new APM 2.0 revision, better known as APM2.5! But before you start screaming that you just got an APM 2.0, let me explain that there’s NO difference in performance at all between the two, the board is still the same in terms of functionally and it runs exactly the same code as APM 2.0. We just took the liberty of throwing in a few new universal connectors in there (so accessories can be cross compatible with the new PX4 and protect the user from connecting the cable in the wrong direction), some production improvements that will allows to manufacture it faster and finally we added some protection features to protect it from those reverse polarity/short circuit lovers.
We’re making them at the new Tijuana facility, so we hope that we’ll be able to keep up with demand much better than we have in the past. We’re committed to shrinking all delays, and our investment in the Tijuana facility is just one sign of this.
Announcing APM 2.5! – [Link]
The TPS54160 device is a 60-V, 1.5-A, step down regulator with an integrated high-side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load, regulated output supply current to 116 µA. Using the enable pin, shutdown supply current is reduced to 1.3 µA.
2.5MHz DC/DC converter protect against 65-V transients – [Link]
Who have already ever lost data from any memory medium knows, that it is worth to use a more reliable solution. A relatively small price difference of an industrial memory card in comparison to a price of a common memory card is multiply compensated by a higher reliability. On the opposite side, any data loss or servicing are practically always substantially more expensive.
New APACER uSD cards meet in all paramaters demanding requirements for industrial usage. A wide temperature operating range, high write/read rates, built-in advanced error correction algorithm (ECC), low power consumption, support of SD and SPI mode and many other features designate these cards even for demanding industrial use. They are available in capacities from 4 to 16GB (MLC). 4GB and 8GB are available directly from our stock, other types incl. SLC ones upon request. Detailed information will provide you the APACER uSD datasheet as well as the APACER products overview.
Safety first! – APACER microSD – [Link]
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]