|
Safety /
Protection Circuits, Page 4
Safety /
Protection: #-B
C-D E-K
L-N O-R
S T-V
Last Updated on:
Monday, October 03, 2011 06:07 PM
|
|
|
Links to electronic circuits,
electronic schematics, designs for engineers, hobbyists, students & inventors:
|
|
|
|
Method offers fail safe variable reluctance sensors - 22-Nov-01 Issue of EDN
Variable-reluctance sensors are preferred for industrial and automotive environments,
because they sustain mechanical vibration and operation to 300°C. In most applications,
they sense a steel target that is part of a rotating assembly. Because the unprocessed
signal amplitude is proportional to target speed, a sensor whose signal-processing
circuitry is designed for high speed cease.... [Design Idea by Phil Levya, Maxim
Integrated Products, Sunnyvale, CA] |
|
Method provides automatic machine shutdown - 27-May-04 Issue of EDN Some
machines need to run for long periods and therefore may finish their work in the middle of
the night or during the weekend. For the time remaining, until the operator returns, the
machines stay idle, uselessly consuming power. This Design Idea allows a machine to
completely shut itself down after finishing its work.... [Design Idea by Jean-Bernard
Guiot, Mulhouse, France] |
|
Method provides overpower protection for quasiresonant supplies - 28-Oct-04
Issue of EDN The main characteristic of quasiresonant switch-mode power supplies is
that they exhibit a varying frequency when the input voltage changes. For a flyback power
supply, the power delivered to the output obeys the following equation
POUT=1/2(LP×IP 2×FSWη], where LP is the primary inductance, IP is the peak primary
current, FSW is the switching frequency, and η is the e.... [Design Idea by Nicolas Cyr,
On Semiconductor, Toulouse, France] |
|
Microcontroller protects DC-motor - 17-Feb-05 Issue of EDN Although any
overloaded dc motor can draw excessive current and sustain damage, a cooling fan's motor
is particularly vulnerable due to fouling by dust, insects, or misplaced objects. A few
fans include built-in overload protection, and others can use an external warning device,
such as Microchip's TC670 fan-failure detector.... [Design Idea by Abel Raynus, Armatron
International Inc, Malden, MA] |
|
Monitor & Protect Automotive Systems with Integrated Current Sensing - DN374
Design Notes (Linear Technology) (app note added 1/06) |
|
MOSFET Beats Murphy's Law - 12/22/94 EDN-Design Ideas.... EDN is migrating
links. This link is not verified. Search the "title" + "EDN" for new link.
|
|
Motor uses simple reverse-battery protection - 18-Mar-04 Issue of EDN This
Design Idea presents a low-side, reverse-battery-protection technique for a dc-motor
system. The system in Figure 1 incorporates two protection options. The common practice of
using a diode for reverse-battery protection does not work with dc motors' inductive
loads. In Figure 1, an Allegro (www.... [Design Idea by Dongjie Cheng, Allegro
Microsystems, Warminster, PA] |
|
New 8051SBC - Brown-out protection, WDT, 20x4 LCD BUS interface. Simple scope
using Nokia 3310 LCD. ….(electronic schematic added 06/09) |
|
|
| |
Safety / Protection: #-B
C-D E-K
L-N O-R
S T-V
|
|
|
