|
Method Provides Automatic Machine Shutdown - 05/27/04 EDN-Design Ideas: (design
idea added 6/07) |
|
Method provides overpower protection for quasiresonant supplies - 10/28/04 EDN-Design
Ideas: 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 added 11/04) |
|
MicroController protects DC motor - 02/17/05 EDN-Design Ideas: 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 added 5/05) |
|
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: (design idea added 3/03) |
|
Motor uses simple reverse battery protection - 03/18/04 EDN-Design Ideas: 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 added 1/05) |
|
New 8051SBC - Brown-out protection, WDT, 20x4 LCD BUS interface. Simple scope
using Nokia 3310 LCD. ….(electronic schematic added 06/09) |
|
Open collector output provides fail safe operation - 09/04/03 EDN-Design Ideas:
It is common practice to use digital open-collector outputs for control units in
industrial applications. Using these outputs, you can switch loads, such as relays,
lamps, solenoids, and heaters. One possible problem inherent to this type of output
stage is a short circuit from the output to the supply voltage (often,
24V).....(design idea added 1/05) |
|
Output Power Limiter - Just the thing if you want to limit amplifier power to
something "sensible" (circuit added 6/07) |
|
Over Voltage Protection - Safety devices like fuses provide protection against
excess current, but do nothing for transients and short duration spikes of high
voltahe on the power supply lines.This circuit uses the "crowbar" method and provides
fast protection against transient voltage spikes... (circuit design added
07/07/07) |
| Over Voltage Protection for the ADG5XXA Multiplexer
Series - AN-249 Analog Devices Application Notes (app note added 6/06) |
| Over Voltage Protection on AC Adapter Input AN-31 -
Application Note 31 from Microsem (app note added 6/06) |
|
Over-/Under-Voltage Protection of Electrical Appliances - (electronic Circuit /
Schematic added 10/04) |
|
Overload & Reverse Current Circuitry Protects Battery & Load - 03/01/96 EDN-Design
Ideas: Battery-operated equipment is prone to the consequences of backward-installed
batteries, accidental short circuits, and other careless use. The effects of a
reversed battery are critical. Unfortunately, it's difficult to guard against a
reversed battery. To make ,.....(design idea added 03/03/03) |
|
OverVoltage Protection - describes crowbar technique that provides a useful
defense for fast Over voltage spikes and transients that could cause damage to more
sensitive components (added 5/02) |
|
OverVoltage Protection for LM317 - This circuit is a modified version of an
original interface on QSL Net. It is a fully isolated interface allowing computer
control of the Trio/Kenwood R5000 receiver. Separate software is needed to control the
receiver. (electronic schematic / circuit added 4/02) |
|
PIC Speaker Protection - This doesn't replace P33, but it is possibly the ultimate
speaker protection. (schematic added 6/07) |
|
Polarity protector outperforms Schottky diodes - 02/06/03 EDN-Design Ideas: The
polarity-protection circuit in Figure 1 is a high-performance alternative to the usual
series diode (often Schottky). The circuit incurs a much lower voltage drop than even
the best Schottky diode. The circuit uses MOSFET devices because of their low
on-resistance. For the transistors in this design, the combined on-resistance is
0.....(design idea added 1/05) |
|
Power line outage flashes red alert - 06/13/02 EDN-Design Ideas: This Design Idea
expands on a circuit in a previous one to configure a power-outage detector with a
flashing alarm (Figure 1, Reference 1). The circuit plugs into a mains outlet and uses
trickle-charged nickel-cadmium batteries. The green-LED monitors.....(design idea
added 10/03) |
|
Power Supply interrupter fights ESD induced Device Latch Up - 02/05/04 EDN-Design
Ideas: In low-noise analog circuits, a high-gain amplifier serves at the input to
increase the SNR. The input signal level determines the input-stage gain; low-level
signals require the highest gain. It is also standard practice in low-noise
analog-signal processing to make the circuit's bandwidth....(added 10/05) |
|
Power Supply Transient Protection for MNA & VNA Amplifiers - AN-60-027 Application
Note MiniCircuits.com (app note added 04/05/06) |
|
Power Supply-On/Off-protection - (electronic circuit added 6/07) |
|
Power-Supply Failure Alarm - (electronic Circuit / Schematic added 10/04) |
|
Prevention & Control of Electrostatic Discharge ESD - AN-40-005 Application
Note MiniCircuits.com (app note added 04/05/06) |
|
Protecting & Monitoring Hot Swappable Cards in High Availability Systems - DN360
Design Notes (Linear Technology) (app note added 1/06) |
|
Protecting USB Data I/O Ports - MicroNote 117 from Microsem (app note added
6/06) |
|
Protection Circuit Covers a Wide Range - 07/17/97 EDN-Design Ideas:.....(design
idea added 3/03) |
|
Protection for your Electrical Appliances - (electronic Circuit / Schematic added
10/04) |
|
RS-232 OverVoltage Protection Circuits - (electronic schematic / circuit added
4/02) |
