Tuesday, March 29, 2011
Electronic Inventory Online - Parts-n-Kits
eio is a versatile electronics surplus source associating information with the distribution of electronics, computer and optical materials. They have very good bargains in some categories.
Lumileds LXHL-MWGC Luxeon
LED Lighting, One Watt of Warm White light. 20 lumens at a Wavelength of 3300 K.
Shop at Electronic Inventory Online
Electronic Inventory Online, Inc.
22412 Normandie Ave. Unit #A Torrance, CA 90502 (USA)
A Warm White LED is great Feng Shui for a Hobbyist's Desktop or Workshop. A DIY Table Lamp or a Lathe Lamp with these Warm LEDs create Positive Energy, for not just your Home but for the Entire Neighborhood. This idea, is in the form of riddles in Ancient Chinese Manuscripts, I hope the Yellow Emperor does not see this post.
Yellow Emperor - Known as an early inventor. He holds the patents for The South Pointing Chariot, Diadem, Football, Silks, Dyes and Grain Farming too. A Musical instrument called Guqin too!
They are Experts with hard to find electronic parts from audio ICs and devices, to transformers and relays. An inventory that is made up of obsolete and active items.
Surplus Electronics: Switches, Capacitors, Transformers, Connectors, Motors, Meters & Analog Indicators, Semiconductors and More.
Sell or Dispose your stagnant inventories or unused items to Electronic Surplus. This is a Green Solution, Recycle, it also helps small entrepreneurs do something new. Remember old parts may corrode and get infested if idle for long. Electrolytics and Batteries do not have a good shelf life.
"E.S.I. was started by Clyde Daniels back before 1930 when he was selling all types of material he then progressed to Military surplus after World War 2 when his son Dick joined him after serving on PT boats in the Navy and Dick mother Ida Maye completed the family operation."
Electronic Surplus Inc
8755 Munson Road #6, MENTOR, OH 44060
Monday, March 28, 2011
Electronix Express - For Schools and Industry
Some of the products they supply include Anti Static Products, Toolkits, Soldering related, Inductors, Logic Probes and Pulsers.
A Benchtop Multimeter, 4 ¾ digit, 40,000 count true RMS AC with Built-in USB & RS232 Interfaces.
Bench Digital Multimeter DM422B
Other features -• Data save and recall with software, Triple display, (main, sub-left, sub-right), 40 segment bar graph display, duty cycle, Temperature function.....
True RMS, USB & RS232 Model
900 Hart Street Rahway, NJ 07065, USA
This is a easy to use Electronics Component eStore. And so well sorted and Boxed. They also buy unused Inventory or surplus from You. They specialize in electronic and electro-mechanical parts and assemblies.
From robotics, electric trains, surveillance, remote control models, antique radio restoration to Used Parts and Assembly; They have it all for the student, hobbyist or even that rare Inventor. Since 1967 they have this service, nearly a year after i was born. They are as old as Me.
All Electronics Corporation
14928 Oxnard Street, CA 91411-2611, USA
Saturday, March 26, 2011
LM3914 - Versatile and Easy use Display
- Drives LEDs, LCDs or vacuum fluorescents
- Bar or dot display mode externally selectable by user
- Expandable to displays of 100 steps
- Internal voltage reference from 1.2V to 12V
- Operates with single supply of less than 3V
- LED driver outputs are current regulated, open-collectors
My LM3914 Circuits
Millivolt Meter using a LM3914 LED Dot Display
LM2941 Manual Fan Regulator & LM3914 Voltage Monitor - The LM3914 voltage monitor is also straight forward. As told I use only 6 of the 10 led outputs. A voltage divider on the input (R1-R2) decreases the 7-12V input to about 1.96-3.36V (x0.28).
Indikátor napětí autobaterie s LM3914 - This is actually a voltmeter that the size of the measured voltage signals using ten LEDs. The level of which will illuminate the first LED and the lights can be set to last.
Bauplan Schaltplan Bargraph Anzeige mit dem LM3914 - Analog displays have the undoubted advantage that you can get a reading very quickly perceives visually compared to digital displays.
Stereo Digital Camera Sync Shepherd - R7 sets the current through the LED's of the display. With R7 of 620 ohms, the illuminated display LED draws about 20 mA, which is about maximum for this display,
DIS*PLAYER: Theory and Construction - This device drives ten LEDs in a linear display, with programmable endpoints and the choice of "dot" or "bar" modes of operation. Furthermore, it is possible to "chain" multiple devices for displays of virtually unlimited size.
Thursday, March 24, 2011
This is an Embedded Project using a XBee. Makes an Energy/Watt/Power Meter into a Wireless Intelligent Sensor.
These Sensors are Interfaced to a PC using another XBee. The Data Acquired can be Displayed(monitor), Logged (sql/csv) and Analyzed (graphs/reports). Then you can form a set of Green Resolutions and Implement them.
Monitor upto 1.5 KW, You have to own a Kill-A-Watt device to Add-On this Kit to Web Enable it. Each plug transmits the power usage at that outlet to a central computer receiver. The receiver can then log, graph and report the data.
The µSCOPE - A poorman's oscilloscope
The oscilloscope is still one of the most important measurement tools of the electronic engineer. With the advent of the often very reasonably priced USB scopes, such an instrument is now within reach of every body.
Digital oscilloscope - Build a simple Inexpensive digital oscilloscope. Single channel, about 100 MSPS. RS-232 based.
xoscope is a digital oscilloscope using input from a sound card orEsounD and/or a ProbeScope/osziFOX and will soon support Bitscopehardware. Includes 8 signal displays, variable time scale, math,memory, measurements, and file save/load.
xoscope - digital oscilloscope for Linux
MHZ100Q is a low cost FPGA-based high speed data acquisition system. Version 2 is a standalone board containing 2, 100MHz 8-bit A/D channels, preamp, 7th order elliptical antialiasing filters, and a Xilinx FPGA.
MHZ100Q - Open Source FPGA-based 100MHz A/D
A USB interface is implemented in the FPGA firmware. Power comes from the USB bus. Schematics, VHDL and Verilog source code, and signal capture and display software are available and being posted.