|
Microcontroller Produces Analog Output - 10/16/03 EDN
Design Idea A brushless dc motor needs several voltage levels to control its speed0V to stop the motor, 5V
to run it at maximum speed, and some voltages between these extremes to run it slower. When you use such a
motor in a system under mic. . . [by Abel Raynus, Armatron International, Melrose, MA]
Microcontroller programmer taps power from PC’s serial port - 04/26/07 EDN Design Idea A PC's serial port can supply enough power to supply a
microcontroller programmer. . . [by GY Xu, XuMicro, Houston, TX]
Microcontroller Provides An Alternative to DDS - 01/07/10 EDN Design Idea Use a microcontroller to generate the codes for a DAC. . . [by
Daniele Danieli, Eurocom-Pro, Venice, Italy]
Microcontroller provides low-cost analog-to-digital conversion, drives
seven-segment displays - 10-May-07 EDN Design Idea
Versatile conversion circuit detects and displays signal's peak value. . . [by Name withheld by author’s
request]
Microcontroller provides SRAM battery backup - 06/26/03 EDN Design Idea To maintain content in the event of power loss, many designs
that include SRAM require a dedicated device that can automatically switch from a standard power supply to
battery operation. Microcontrollers seldom find use in power-sw. . . [by Dave Bordui, Cypress Semiconductor,
Orlando, FL]
Microcontroller provides timer function - 01/04/01 EDN
Design Idea The circuit in Figure 1 is a µC-based programmable timer with two output channels. The first
channel, activated by pressing the red switch, S3, has a red LED at its output. This channel is active until
it reaches its desired time. . . [by Tito Smailagich, ENIC, Belgrade, Yugoslavia]
Microcontroller selects minimum/maximum value - 09/20/01 EDN Design Idea Microcontroller-based systems for measurement, sensor-data
processing, or control, sometimes require you to determine a maximum or minimum data value. For example, in
an object-detection system, such as a radar or sonar system, the. . . [by Abel Raynus, Armatron
International, Melrose, MA]
Microcontroller simplifies battery-state-of-charge measurement - 04/27/06 EDN Design Idea Monitor battery status for renewable energy systems. . . [by Abel
Raynus]
Microcontroller takes control of comparator - 09/01/00
EDN Design Idea In many µC applications, a signal conditioner modifies an analog input signal from a sensor
and passes it to the µC for processing. The last stage of the signal conditioner is always a device that
transforms the signal level to a. . . [by Abel Raynus, Armatron International, Melrose, MA ]
Microcontroller Watches, Controls AC Power - 06/22/95 EDN Design Idea Circuit allows an isolated microcontroller to both sense and
control ac power to an externally plugged-in device - For monitoring and controlling a power circuit from a
microcontroller (µC) , Fig 1 replaces the conventional techni. . . [by Samuel Kerem, Infrared Fiber Systems,
Silver Spring, MD]
Microcontroller, JFET form low-cost, two-digit millivoltmeter - 06/22/06 EDN Design Idea software subroutines replace hardware A/D converter. . . [by
Noureddine Benabadji, University of Sciences and Technology, Oran, Algeria]
Micropower Circuits using the LM4250
Programmable Op Amp - Application Note. . . [National
Semiconductor]
Microprocessor Core Supply Voltage Set by I2c™ Bus Without VID Lines - DN279 Design Notes (Linear Technology). . . [Linear Technology]
Microprocessor RS-232 Reset - This circuit allows a remote
microprocessor to be reset by a controlling host by sending a break signal over an RS-232 or RS-422 serial
line. If the remote machine resets into a simple program loader program, it is possible for the host to halt
and restart, or halt and reload/restart the remote machine's program. This is an ideal way to develop
software on older EPROM-based systems. Modern EEPROM/NVRAM systems use JTAG interfaces for similar results. .
.
Microprocessor supervisor and regulator form in-range voltage monitor - 10-Jun-04 EDN Design Idea Low-cost microprocessor supervisors reset controllers when
power-supply voltages fall below given levels. As added protection, you can also reset the microcontroller
when the power supply is too high by combining a low-cost shunt-v. . . [by Ilie Poenaru and Sabin Eftimie,
Catalyst Semiconductor, Bucharest, Romania]
Microprocessor using Xilinx FPGA - . . . [Paul Stoffregen]
Micro-Spy with FET's - Circuit and notes only, no circuit description given. . . [Tony van Roon's circuit]
Micro-Spy with TTL - This circuit is old (70's) but since the 74LS13 is from the regular 74xx series and easy to
obtain, I decided to keep the circuit in place until components are no longer available. Not much to tell
here. Performance is based on the 74LS13, a 'Dual 4-input Positive-NAND Schmitt Trigger'. This circuit was
experimental and so has no real purpose other than tinkering. . . [written by Tony van Roon]
Micro-Spy with USW - Circuit and notes only, no circuit description given. . . [Tony van Roon's circuit]
Migrating Designs from PIC16C74a/74B to PIC18c442 - Application Note Published 28-Sep-99. . . [Microchip]
Migrating from the TMC2490/TMC2491 to the
TMC2490A/TMC2491A/AN-51 - Fairchild App Note - . . .
<<<< Previous PAGE
Next >>>>
|
