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Computer Interfaces  Page 3a
Computer Interface: 
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Last Updated on: Thursday, November 30, 2017 01:57 PM
 

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
Circuit for Soft-Start Module -  Simple circuit that reduces surge current on start of an induction motor.   (circuit added 09/09)
Circuit forms novel floating current-source -  1-May-03 Issue of EDN  Figure 1 shows a polarization circuit applicable to ISFET (ion-sensitive field-effect-transistor] sensors. ISFETs are solid-state chemical sensors that measure.... [Design Idea by S Casans, AE Navarro, and D Ramirez, University of Valencia, Burjassot, Spain]
Circuit forms satellite-dish command decoder -  4-Mar-04 Issue of EDN  By decoding the commands sent by a direct-broadcast satellite receiver that uses the DISEQC (digital-satellite-equipment-control] protocol, you can troubleshoot the commands or simply listen in. Eutelsat Corp (www.eutelsat.com] offers the DISEQC protocol. The technique uses only the coaxial cable between the receiver and the dish to send commands for actions such as changing the low-noise-block.... [Design Idea by Mark Giebler, Oakdale, MN]
Circuit Protects Computer's Input -  05/26/94 Issue of EDN-Design Ideas  The circuit in Fig 1 performs input protection, level translation, isolation, and debouncing..... [Design Idea by Ang Tzu Seng, Halliburton Drilling Systems, Singapore]
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Circuit provides 4  to 20 mA loop for microcontrollers -  27-May-04 Issue of EDN  The 4- to 20-mA current loop is ubiquitous in the world of controls in manufacturing plants. Discrete logic, microprocessors, and microcontrollers easily cover the digital portions of control schemes, such as limit switches, pushbuttons, and signal lights. Interfacing a 4- to 20-mA output to a rudimentary microcontroller can be problematic.... [Design Idea by Robert Most, Dow Corning Corp, Auburn, MI]
Circuit Translates TTY Current Loop to RS232C -  08/03/98 EDN-Design Ideas  Provides signal translation between a passive current-loop (TTY]interface and a duplex RS-232C ports.…Multiple circuits in this file…. [Design Idea by Jerzy Chrzaszcz, Warsaw University, Poland]
Cirrus Seismic Evaluation GUI Installation Guide -  (app note added 6/07)
Clc030 Or Clc031 Control Port Bussed Operation -  National Semiconductor Application Note  (app note added 2/06)
Clock Controller V1.1  -  The Clock V1.1 provides the same function as the saver does but with additional 4-digit LED display and 4-key input for setting the clock and turn on/off AC load. The circuit uses single 2051 chip, and relay or opto-triac output for driving AC load.   (circuit added 09/09)
Clock Performance In Raid Storage Applications: Pi6c2502 -  Pericom Semiconductor Application Note # 026 (app note added 2/05)
Clock/Calendar/Alarm with EEPROM-Based Interpreter & DS Interface -  (circuit schematic added 6/07)
CMOS A/D Converter Interfaces Easily with Many Microprocessors -  National Semiconductor Application Note 04-Nov-1995 (app note added 6/06)
CMOS inverters convert RF to Digital signal -  01/05/06 EDN-Design Ideas  Applications ranging from frequency counting and synthesis to sensor signal conditioning require conversion of RF signals to digital-logic levels. In such situations, designers typically use a high-speed voltage comparator to perform the RF-to-digital conversion. Due....[Design Idea added 05/07] EDN is migrating links. This link is not verified.  Search the "title" + "EDN" for new link.
Combine two 8-bit outputs to make one 16-bit DAC -  30-Sep-04 Issue of EDN  Inexpensive, 16-bit, monolithic DACs can serve almost all applications. However, some applications require unconventional approaches.  This Design Idea design concerns circuitry I recently designed for a tunable-diode laser spectrometer for a Mars-exploration application. The control circuitry included two 16-bit DACs that interface to the radiation-hardened, 8051-variant 69RH051A microcontroller.... [Design Idea by Steve Woodward, Chapel Hill, NC]
Commodore 64 24-Bit Parallel Port Interface with 8255 -  High Quality simple unit. No need for a Preamplifier… [Peter Jakab, Electrical Engineer, Engineer of Informatics]
Commonly Used RS-232 Serial Port Cables -  (design circuit added 8/02)
Communicating with EEPROM in MTA8XXXX -  Microchip Application Note Published 26-Aug-97  (app note added 06/06/06)
Communicating with Iic Bus Using Pic16c5x -  The Microchip Technology Inc.?s 24CXX and 85CXX Serial EEPROMs feature a two wire serial interface bus. The bus protocol is I 2 C compatible. Interface to a serial port with I 2 C bus protocol in a microcontroller is trivial.  This application note is intended for design engineers . (Microchip AN515 added 9/2008)  
Composite VGA encoder/decoder eases display upgrade -  09/28/06 EDN-Design Ideas  Upgrade an RGB video system without adding cables....[Design Idea added 06/07] EDN is migrating links. This link is not verified.  Search the "title" EDN for new link.
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