[advanced_iframe securitykey=”7053122eaa09ce46830dfb8aaeae454056003ad0″]Problem: with my previous work I can take a PCB x-ray at fairly high resolution (see bond wires like above) but the field of view is pretty small. The above x-ray doesn’t even cover an entire PDIP-40. How can I see the entire PCB?Linear stageLinear stages are great for this sort of project. As […]
xy-ray x-ray scanner Read More »
In this episode Shahriar explores the world of Delta-Sigma modulators with emphasis on a Delta-Sigma Analog to Digital Converter (ADC). The basic concepts of analog to digital conversion is presented, particularly with respect to quantization noise spectral shape and power density. Next, oversampling ADCs are presented to demonstrate the possibility of increasing SQNR (ENOB) through
Theory, Design and Characterization of Delta-Sigma Analog to Digital Converters Read More »
The PicoBuck is a small and inexpensive 3-channel LED driver. It employs constant-current buck driving which approaches an efficiency of 95% (theoretical). It’s based on AL8805 LED Lighting Buck Driver from Diodes Inc. Description The PicoBuck supports a wide range of input voltages (6v to 20v) which may be connected to the VIN header. It
PicoBuck – RGB LED Driver Read More »
Some notes: 1. The C3 can be omitted, its purpose was to filter noises picked up by connecting cable between board and sensing transistor, but as the transistor is mounted on the board it become unnecessary. 2. R8 is optional and is for reducing the fan speed. Its value must be calculated according the fan
Simple and small temperature fan controll Read More »
Description The WM7210 is a low-profile silicon digital microphone. It offers high Signal to Noise Ratio (SNR) and low power consumption and is suited to a wide variety of consumer applications. The WM7210 incorporates Wolfson’s proprietary CMOS/MEMS membrane technology, offering high reliability and high performance in a miniature, low-profile package. The WM7210 is designed to
Scottish chip firm Wolfson improves audio in smartphones Read More »
Ready for sampling in September, Toshiba’s 48-layer BiCS (Bit Cost Scalable) flash memory stores 256 Gbits using a 3-D vertically stacked cell structure and 3-bit-per-cell triple-level cell technology. By employing this 48-layer vertical stacking process, BiCS flash surpasses the capacity of conventional 2-D NAND flash memory, where cells are arrayed in a planar direction on
Toshiba launches 256-Gbit 48-layer 3-D NAND flash Read More »
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