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Electronic Circuit Breaker - This circuit uses the on-resistance of the MOSFET as
the current sensor. Reset it by removing the input power or the load. The circuit
draws no current unless tripped. Designed by Andrew R. Morris (added
09/05) |
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Electronic Fuse Emulates Fast or Slow Blow Fuses - 11/09/00 EDN-Design Ideas: PDF
contains multiple circuits, scroll to find the one of interest / The electronic-fuse
circuit in this article combines the properties of a current transducer and a
solid-state relay to disconnect low power at.....(design idea added 5/02) |
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Electronic Fuzing - National Semiconductor Application Note 05-Aug-1995 (app note
added 8/02) |
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Equip switchers with overCurrent protection - 06/24/99 EDN-Design Ideas: (added
2/06) |
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External components provide true shutdown for boost converter - 03/16/06 EDN-Design
Ideas: An additional MOSFET and resistor solves the problem by opening the unwanted
current path during shutdown.....(design idea added 09/06) |
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Failed Power Light - turns on small low voltage lighting when mains power
disappears (added 6/06) |
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Failsafe Biasing Of Differential Buses - National Semiconductor Application Note
(app note added 6/06) |
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Failsafe Biasing of LVDS Interfaces - National Semiconductor Application Note
(app note added 6/06) |
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Fail-Safe Monitoring & Clock Frequency Switching using the PIC16f684 - Microchip
Application Note Published 16-Dec-03 (app note added 6/06) |
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Fast Electronic Fuse - A fast electronic fuse designed to operate on 230V AC with
an adjustable trip current. (added 10/05) |
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Fast IC Power Transistor with Thermal Protection - National Semiconductor
Application Note (app note added 2/06) |
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Fault Latch Circuit Protects Switchers - 02/19/04 EDN-Design Ideas: Many
power-supply designers like to have a regulator latch off in the event of an
overcurrent situation or other fault condition. Yet, many PWM controllers do not
internally support this latch-off function. Most do, however, have a power-good output
and an enable function. The circuit in Figure 1 adds that latch-off capability at low
cost in little additional space.....(design idea added 1/05) |
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For want of circuit protection devices - 02/03/97 EDN-Design Feature.....(design
idea added 2/06) A variety of devices protects sensitive circuits against
overvoltage or overcurrent conditions, thereby preventing overheating, avalanche
breakdown, and device burnouts. —Bill Travis, Senior Technical Editor |
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Fuse Monitor/Alarm - a simple way to see if a fuse has blown without removing it
from its holder (added 4/02) |
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Ground Fault Interrupter - Electronic circuit design (added 02/05) |
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Ground Fault Interrupter (appnote) - National Semiconductor Application Note
MP1851 June 1992 (app note added 02/05) |
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High Side Driver has Fault Protection - 09/05/02 EDN-Design Ideas: High-side
drivers find common use in driving grounded solenoid coils and other loads.
Short-circuit protection for such drivers is essential for avoiding damage from wiring
faults and other causes. Polymer fuses are generally too slow, and discrete
current-limiting circuits are large and cumbersome. The circuit in Figure 1 uses a
small, low-dropout linear regulator as a high-side switch and p.....(design idea added
1/05) |
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High Voltage Circuit Breaker Protects to 26V - 09/11/98 EDN-Design Ideas: (design
idea added 3/03) |
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House Security System - (electronic Circuit / Schematic added 10/04) |
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IC Controlled Emergency Light with Charger - (electronic Circuit / Schematic added
10/04) |
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Impedance transformer flags failed fuse - 12/17/04 EDN-Design Ideas: Figure
1depicts a circuit that detects the opening of a miniature circuit breaker or
high-rupture-capability fuse in a high-reliability telecommunications power supply.
The circuit generates an alarm when a failure changes th.....(design idea added 10/05) |
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Improved laser diode Clamp circuit protects against overvoltages - 05/29/08 EDN-Design
Ideas: Adding a bipolar transistor to a JFET laser-diode clamp protects high-current
laser diodes.....(design idea added 09/08) |
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Inexpensive self resetting circuit breaker requires few parts - 01/22/09 EDN-Design
Ideas: , The circuit breaker pulses power through a pass transistor when the
current gets too high, thus protecting the part from excessive heat.....(design idea
added 08/09) |
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Input protection scheme tops other approaches - 01/06/00 EDN-Design
Ideas:.....(design idea added 2/06) |
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Inrush Limiter also Provides Short Circuit Protection - 06/09/05 EDN-Design Ideas:
MOSFET keeps inrush currents due to capacitive loads under control.....(design idea
added 11/05) |
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Isolated Driver forms Solid State Circuit Breaker - 03/03/98 EDN-Design Ideas:
-This circuit allows standard TTL logic levels to safely drive a high-power dc load,
circuit provides also overcurrent circuit breaker functionality.....(design idea added
03/03/03) |
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Isolation Barrier Precisely Protects Transducer Signals - AN-246 Analog Devices
Application Notes (app note added 6/06) Through the Judicious Use of Isolation
Amplifiers that Incorporate Transformer Coupling, You Can Design Circuits that
Accurately Condition and Amplify Low-Level Transducer Signals. |
