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Pro to Consumer Interfaces - AS012 Jenson Transformer
Application Note. From +4dBu balanced output to -10dbV consumer
equipment input (app note 6/07) |
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Program Converts hex to floating point - 07/20/95 EDN-Design
Ideas You might need to use floating-point variables in some
embedded software algorithms. You'll find this easy to do because all
modern C compilers come with... [Design Idea by John Santic, Consultant,
Frederick, MD] |
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Program Converts temperature from RTD sensor - 06/05/97
EDN-Design Ideas 100V, platinum
resistance-temperature-detector (RTD]sensor provides an accurate means of
obtaining temperature readings. Platinum sensors have a nonlinear
resistance-vs-temperature characteristic; therefore, for....[Design Idea
added 11/05] EDN is migrating links. This link is not verified.
Google the "title" EDN for new link. |
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Program designs single supply OpAmp circuits - 10/26/95
EDN-Design Ideas Mathematically, there is no difference between
single- and dual-supply op-amp designs, except for the signal reference.
Dual-supply designs inherently reference signals to ground. However,….
[Design Idea by Ronald Mancini and Dave Culver, Harris Semiconductor,
Melbourne, FL] |
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Program excelerates microcomputer I/O allocation - 12/15/08 EDN-Design Ideas
Use Microsoft Excel to organize how you assign I/O functions to microcontroller
pins....[Design Idea added 08/09] EDN is migrating links. This link is not verified.
Google the "title" EDN for new link. |
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Program Flags Dangerous DOS CommanDS - 02/02/95 EDN-Design Ideas
Windows users still perform many small housekeeping tasks, such as renaming, moving,
or deleting files, by switching to DOS, because DOS is much faster than the
time-consuming, icon-driven facilities of Windows. However, you should not use certain
DOS features, such as CHKDSK or tape backup, when Windows is running. Windows, because
it is a multitasking operating system, maintains several open and swap
files....[Design Idea added 11/05] EDN is migrating links. This link is not verified.
Google the "title" EDN for new link. |
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Program generates Braille dot code - 12/19/96 EDN-Design Ideas The
Basic training program in Listing 1 helps visually handicapped people easily
learn Braille dot code with the help of a trainer. The trainer generates six-pin
Braille code using six solenoids operating on an LPT1/2 either by directly connecting
the low-power solenoids to the data bits of the parallel port or by driving solenoid
pins (pull-out type] using an UN2003 power driver (Figure 1]. Push-in type solenoids
require complemented (0 for 1 and 1 for 0] Braille-code data bits or an extra inverter
on the LPT1 port.... [Design Idea by Jose Carlos Cossio, Santander, Spain] |
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Program helps convert OrCAD libraries - 09/14/95 EDN-Design Ideas A
simple Borland Turbo C 2.00 program, BIT2VEC.C, is useful for anyone using OrCAD SDT
CAE software. The program, which you can download from EDN's FTP server (DI #1755],
helps to convert OrCAD libraries from bit map to vector format.... [Design Idea by
Vincenzo Carlotti, Roland Europe SPA, Acquaviva Picena, ITALY] |
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Program Matches filter network impedances - 07/20/95 EDN-Design Ideas
In RF circuits, it's often necessary to match one impedance to another. The program in
the Listing 1 can design a network to match any resistive impedance R1 to another R2
(where R1 is less than R2] at a specified frequency and specified Q. The program
employs a lossless (in theory] network that uses just capacitors and inductors. Five
matching networks.... [Design Idea by David Kirkby, University College, London, UK] |
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Program predicts VSWR mismatch RF uncertainties - 02/01/01 EDN-Design Ideas
Hewlett-Packard (now Agilent Technologies] once offered a useful little cardboard
slide rule for calculating the uncertainty in RF measurements stemming....
[Design Idea by Steve Hageman, Agilent Technologies, Santa Rosa, CA] |
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Program provides integer to binary Conversion - 03/02/98 EDN-Design Ideas
A simple and inexpensive implementation using an eight-pin 12C508 controller
(Microchip Technology, Chandler, AZ] provides both bit-rate detection and a
synchronous, appended-clock output from an asynchronous input-data stream (Figure
1a].…File contains many circuits, please scroll to find this one.... [Design Idea by
Bert Erickson, Fayetteville, NY] |
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Program provides ISA bus DLL for Windows #2 - 09 May- 96 Issue of EDN
Windows commonly uses a dynamic link library (DLL]to create subroutines and procedures
that all compatible software can call. A DLL is an executable file, with
extension.DLL, that a program can load and unload as required. However, not all
Windows-based software can read from and write to the ISA bus in a PC. The DLL
described here provides 8- and 16-bit I/O reads and writes to the ISA bus.... [Design
Idea by Paul Kemp, NASA Johnson Space Center, Houston, TX] |
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Program the AT89S8252 & 89S53 with Easy-Downloader V2.0 - Upgraded EZ52 to
EZ53.hex enabling the Easy-Downloader to program 89S8252 and 89S53 chips without any
modifications. (circuit added 09/09) |
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Program Turns PC Sound Card into a Function Generator - 09/02/99 EDN-Design
Ideas You can use a low-cost PC sound card as an analog-function generator by
controlling the PC with the program "SoundArb." [To obtain SoundArb, download
di2409setup.exe, a 1.06-Mbyte self-extracting installation program.]....[Design Idea
added 11/05] EDN is migrating links. This link is not verified. Search the
"title" EDN for new link. |
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Programmer Hardware Tester - Notice that the schotty diode allows the DIY
Programmer to feed its VCC without its VCC being shorted to the PIC's normal power
supply. A tiny DIP switch will also work in place of the diode. NOTE: the diode is
very convenient when developing the code, but it drops about 100mV of the VCC provided
(but was never an issue in my designs. Simply do NOT power the PIC while programming
it....(design added 6/07) |
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Programming the Automatic Fan Speed Control Loop - AN-613 Analog Devices
Application Note (app note added 6/06) |
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Programming the NS32FX200 for Use with a Contact Image Sensor CIS Scanner -
National Semiconductor Application Note (app note added 2/06) |
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Programming the NS32FX200 to Drive a Thermal Print Head Printer - National
Semiconductor Application Note (app note added 2/06) |
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Protecting Data I/O Ports with TVSArrays - MicroNote 121 from Microsem
(app note added 6/06) |
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Protecting Data in Serial EEPROMs - National Semiconductor Application Note
(app note added 2/06) |
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Protecting USB Data I/O Ports - MicroNote 117 from Microsem (app note
added 6/06) |
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PS/2® to USB Mouse Translator - Microchip Application Note Published
4-May-04 (app note added 2/06) |
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PSX Controller to PC MIDI Converter - (circuit added 7/02) |
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Pulse Modulated Interconnect Cuts PLD Pinouts - 03/28/96 EDN-Design Ideas
The number of output pins available often places limits on erasable-PLD (EPLD]
designs. These limitations are especially true when a number of multibit signals
emanate from the same device. An N-bit signal and its data strobe take up N+1 output
pins. This number of pins can sometimes take a disproportionately large amount
of I/O resources compared....[Design Idea added 2/06] EDN is migrating
links. This link is not verified. Search the "title" + "EDN" for new link.
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Push Button Switch Debouncer - This circuit will remove the transient spikes
and contact bounces from a non-latching push button switch….(electronic circuit added
4/05) |
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Pyranometer to Current Converter - Simple circuit that enables long cable
wiring for pyranometer. Built with TI rail-to-rail opamp, TLV2451. (circuit
added 09/09) |
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Questions & Answers Concerning Serial EEPROMs - Microchip Application Note
Published 26-Aug-97 (app note added 06/06/06) |
