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Circuit charges supercapacitors to 7V from USB power - 04/26/07
EDN-Design Ideas....Switching regulator charges three supercapacitors with
current limit.
[Design Idea by Fran Hoffart, Linear Technology, Milpitas,
CA] |
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Circuit compensates system offset of a load-cell-based balance -
16-Aug-07 Issue of EDN Its a challenge to interface a resistive
bridge sensor with an ADC receiving its power from a 5V single-supply power
source. Some applications require output-voltage swings from 0V to a
full-scale voltage, such as 4.096V, with excellent accuracy. With most
single-supply instrumentation amplifiers, problems arise when the output
signal.... [Design Idea by Luca Bruno, ITIS Hensemberger, Monza, Italy] |
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Control stepping Motor via USB interface - This is an example that
demonstration how to control some devices via USB interface.The PC software
program with delphi. Feature:, CPU PIC18F4550 with full speed USB interface
at 48MHz., USB 2.0 compliance, Use on-chip USB driver....(schematic added
7/08) |
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Current-Limited DC/DC Converter Simplifies USB Power Supplies - DN252
Design Notes (Linear Technology) (app note added 6/06) |
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Data acquisition system captures 16-bit voltage measurements using the USB -
05/25/06 EDN-Design Ideas....USB interface simplifies PC-based data capture system....
EDN is migrating links. This link is not verified. Search the "title" + "EDN"
for new link. |
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Data acquisition with PIC18F4550 - This project is simple and small
component count USB data acquisition or USB DAQ. The main core of USB device is
PIC18F4550 .The firmware for PIC modified from Microchip CDC library. When connect
this USB Data acquisition with PC then windows ask for driver after driver
installed(only first time) you will have a new COMx if not connect the COMx not create
by Windows.
.... |
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Demonstrating the Soft Detach Function: With a PS/2® to USB Translator Example -
Microchip Application Note Published 4-May-04 (app note added 2/06) |
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Designing USB 2.0 Interface using PI3USB20 Switch - Pericom Semiconductor
Application Note # 067 (app note added 3/06) |
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DS1820 PC Thermometer - This is a digital thermometer based on USB PIC16C745
microcontroller from Microchip and DS1820 sensor from Dallas Semiconductor.
Temperature readings are sent over USB port in HIDCOMM USB mode to VB6 program on a
PC. Hex program and sample Visual Basic 6 application is included.
.... |
| Dual-voltage regulator meets USB-power needs -
19-Aug-04 Issue of EDN This Design Idea stems from the limited availability of IC
voltage regulators that can meet key USB-power specs, coupled with the need for
turn-on sequencing and rise-time control at each output. As always, for PC-related
designs, minimum cost is a primary motivation. USB specs require all loads to limit
inrush current to less than 100 mA plus 50 µC of charge when powered on.... [Design
Idea by Wayne Rewinkel, National Semiconductor, Phoenix, AZ] |
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Dynamic siphon steals current from USB port - 15-Dec-06 Issue of EDN
Make maximum use of a USB port's current-delivery capability.... [Design Idea by
Donald Schelle, Maxim Integrated Products Inc, Sunnyvale, CA; Edited by Brad Thompson
and Fran Granville] |
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Efficient All-In-One USB Power Management IC Solution - DN1008 Design
Notes (Linear Technology) (app note added 3/06) |
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Flash Drive - (application / block diagram added 6/07) |
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FT232 USB Interface Adapter - Control up to three devices from a PC with
FT232 IC (USB to Serial UART) from Future Technology Devices International FTDI.
Circuit is simple and does not require external microcontroller or any type of
firmware programming. PC control software written in VB6 is included.
.(electronic
schematic added 11/08) |
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