Imec and Genalyte have developed and produced a set of disposable silicon photonics biosensor chips for use in diagnostic and molecular detection equipment. The chips combine standard silicon photonic waveguide technology with bio-compatible modifications and were manufactured using standard microelectronic CMOS fabrication technology. The chips have been tested in the field and proven to meet the functional requirements with high yield.
The high integration level of silicon photonics on the chips enables extensive multiplexed biosensing. Each chip can contain up to 128 ring resonator sensors coated with application-specific chemicals to provide very sensitive molecular detection capability. [via]
Disposable Biosensors Feature Molecular Detection - [Link]
Test Thyristor and Triac using this circuit. Pay attention on mains voltage!
Thyristor – Triac Tester - [Link]
This is a symmetrical DC power supply using mains voltage as input.
- SMD mounting
- Adjustments precise voltage and current
- Input – Output (opto Isolation)
- Current sensor without resistive elements
- Warning circuit for short circuit protection
- Adjustable Output Current: 100mA per branch without refrigeration (1A 0.5A continuous and momentary or more (depending on cooling)
- Input voltage: 15 to 30V DC
- Adjustable output voltage: between ± 9 to ± 26V
- Operating Frequency: 100kHz
- Effectiveness: 85%
DC / DC Converter +-12v - [Link]
If you’re serious about moving things to the next level with electronics, an oscilloscope is one of the best investments you can make to debug and analyze circuits or even your software. You can use it to capture, visualize and analyze the relationship between time and voltage, accurately measuring the delays between pin state changes, visualizing the rise and fall times of signals, etc.
Unfortunately, the learning curve can be a bit steep at first and even on relatively basic models there are still a lot of switches and knobs to figure out. Tektronix has made getting over the initial bump in the road a lot easier, though, with their wonderfully accessible “Introduction to Oscilloscopes: Lab Experiment“. It’s based on their own scopes (duh), but the information is common to any traditional scope out there, and they do a great job of walking you through the fundamentals.
Well worth a read if you’re considering an oscilliscope or if you’re wondering what you can do with one if you did make the investment. For further information you may also want to look at Tek’s XYZs of Oscilloscopes Primer, though you need to register to access this document.
Introduction to Oscilloscopes - [Link]
After spending quite a bit of time selecting a scope that matched my budget and requirements, and looking (importantly!) at the ecosystem around that scope, I settled on Agilent’s new MSOX2000/3000 series — specifically, the Adafruit Christmas Elves picked out an MSOX2024a (the screenshot above was taken on this scope).
These scopes (in my opinion) are an excellent value for a mid-range scope, and really raise the bar for the competition in the $2-5K range. I’d like to write a few blog posts on the reason behind that choice and the thinking behind the whole list of items above, but as a first foray into that I thought I’d try to explain some of the details you should keep in mind if you’re thinking about a scope yourself (probably the most useful tool on any EEs workbench after a multimeter).
Why Oscilloscope Bandwidth Matters - [Link]
Online MSP430 Editor and Compiler – [via]
This is an online MSP430 firmware editor. This means that you edit C-code within your web browser without having to install an IDE such as IAR or CCS on your computer. The files are compiled on our server and you download them from there. Using this tool to develop MSP430 firmware from within your browser is very simple, but does not offer as many advanced features as an expensive IDE.
Online MSP430 Editor and Compiler - [Link]
Analog Devices (who have a lot of great app notes locked up in their stable) have made available in PDF format enough good information and reading material to keep you busy for the rest of the winter while you wait for warm enough weather that you want to step outside again. Their Linear Circuit Design Handbook has a lot of excellent material, and can also be ordered in printed format if you’re still a fan of a good old highlighter and notes in the margin like me.
Linear Circuit Design Handbook - [Link]
This segment is the latest in a series of Arduino tutorials posted by Tronixstuff.
Tutorial: using Ping ultrasonic sensor with Arduino - [Link]
FTDI Expands Vinculum-II Precompiled Firmware & Source Code Offering, enabling a substantial shortening of development time.
USB solutions specialist Future Technology Devices International Limited (FTDI) has introduced additional elements to its family of precompiled, bridging ROM files that support Vinculum-II (VNC2) USB host/device controller ICs. These files can be loaded directly into a VNC2 IC and utilised in order to perform basic data transfer operations between common interfaces. Interface options include SPI, UART, USB host and USB device, with data operations such as mass storage, human interface devices, and communication device class. This provides engineers with off-the-shelf software capabilities that can be immediately implemented – enabling shorter development time and resulting in faster time to market.
The new ROM files from FTDI are:
- SPI master to UART – the bridging of a VNC2 UART to the VNC2 SPI master for controlling SPI slave devices. Data is transferrable in both directions.
- SPI slave to USB memory bridge – the bridging of a USB memory (Flash drive) device present on the VNC2 USB host port to a SPI interface.
- A SPI master to USB human interface device (HID) – the bridging of a USB HID class device (such as a keyboard or a mouse) present on the VNC2 USB host port to a SPI interface.
- A UART to communication device class (CDC) modem – the bridging of a CDC device present on the VNC2 USB host port to a UART interface, with data transferrable in both directions.
- A UART to FT232 host – the bridging of a FT232/FTxxx class device present on the VNC2 USB host port to a UART interface.
- A UART to USB HID Class Host – the bridging of a HID class device present on the VNC2 USB host port to a UART interface.
- A UART to USB Memory – the bridging of a USB memory device present on the VNC2 USB host port to a UART interface.
Each of the precompiled ROM files is accompanied by the source code, to allow users to modify and expand upon the reference software. Complete documentation and application notes are also included, which provide engineers the context of the implementation.
The new ROM files can be downloaded free of charge at: http://www.ftdichip.com/Firmware/Precompiled.htm
Simplify a development of USB devices by off-the-shelf files from FTDI - [Link]
Phoenix DIN-rail enclosures meet the most stringent criteria and offer a wide variability of PCB placing.
Top quality is a main advantage of Phoenix Contact products. With over 80-year tradition and 11000 employees belongs Phoenix Contact among leading producers of electric contacts and industrial automation technologies. In a portfolio of Phoenix Contact products we can find products covering almost all industrial segments.
Find out the modularity and variability of Phoenix enclosures - [Link]