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A Current Limiting Bench Power Supply - This is a 1-amp variable-voltage
PSU. It adjusts from about 3v to 24v: and has the added feature that you can limit
the maximum output current. This is invaluable when (for example) you
power-up a project for the first time or soak-test a piece of equipment.....
[Circuit Designed by Ron J.] |
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Add trimmable current limit to dc/dc supply - 1-Aug-97 Issue of EDN
You can add a simple, two-transistor circuit to a standard, step-down dc/dc
converter to provide an adjustable limit for the output current. You can apply
this method to most step-down converters that provide access to the feedback
node..... [Design Idea by Terry Millward, Maxim Integrated Products UK Ltd, Theale,
UK] |
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An Add-On Current Limiter For Your PSU - This circuit allows you to set
a limit on the maximum output current available from your PSU. It's very useful
when…. [Ron J.'s circuit] |
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AN-8 Hiccup Mode Current Limiting - Application Note Microsemi 1303
(added 2/07) |
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Apex-AN09 Foldover Current Limiting - 2/1998, AN9UREVB : 217 Kb (Apex
App Note added 08/08/08) |
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Circuit Adds Latch-Off Current Limit to Regulator - 03/30/00 EDN-Design
Ideas.....In many applications, forcing a high-current power supply to latch off
if a sustained fault condition exists can minimize the likelihood of damage to the
pc-board traces and the power devices in the supply. Pulse-width-modulation
(PWM]-control circuits provide no latch-off feature, but the circuit in Figure 1
does.....PFD contains several circuits, croll to find this one..... [Design Idea
by Craig Varga, Linear Technology Corp, Milpitas, CA] |
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Circuit provides hiccup-current limiting - 26-Jun-03 Issue of EDN
Current-limit protection is an essential feature for power-supply systems. The
three major types of current-limit-protection mechanisms are constant, foldback,
and hiccup. Hiccup current limit performs the best of the three types; however,
the implementation is rather complex. In this scheme, upon detection of an
overcurrent event, the whole power supply shuts down for an interval before it
tri..... [Design Idea by CH How and KP Basu, Multimedia University, Cyberjaya,
Malaysia] |
| Comparator Adds Current Limit to V2 Controller -
05/21/98 EDN-Design Ideas.....Many step-down controllers satisfy the need for
generating low voltages for µPs and logic. The lower the output voltage, the
greater the importance of building a system with fast transient response. Some new
controllers use the V2 control architecture, which provides several speed
improvements over….contains multiple circuits scroll to find this circuit.....
[Design Idea by Dimitry Goder, Switch Power Inc, Campbell, CA] |
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Current limit switch is Digitally programmable - 08/17/00 EDN-Design
Ideas.....Current-limit switches are virtually ubiquitous in system controls. They
provide a safe means for regulating the current delivered to a load circuit. The
switches allow the load current to increase to a programmed limit but no higher.
Typically, the current limit is a function of the voltage across an external
resistor, produced by the current from EDN is migrating links. This link is
not verified. Google the "title" EDN for new link. |
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Current limiter allows large USB bypass capacitance - 6-Aug-09 Issue of
EDN A current-sense amplifier limits inrush current..... [Design Idea by
Daniel Morris, Group IV Technology, Renton, WA] |
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Current Limiter Provides Latch up Signal - 01/01/98 EDN-Design
Ideas.....Current-limiting circuit both signals a latch-up condition and prevents
latch-up-induced overcurrent destruction of a CMOS IC or group of ICs..... EDN is
migrating links. This link is not verified. Search the "title" + "EDN" for
new link. |
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Current Limiting Power Supply - This is a 1-amp variable-voltage PSU. It
adjusts from about 3v to 24v: and has the added feature that you can limit the
maximum output current. This is invaluable when (for example) you power-up a
project for the first time or soak-test a piece of equipment. added 10/05) [Design
by Ron J.] |
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Current Limiting Resistor Calculator information - The calculators on
this page can be used to find current limiting resistors and currents for Light
Emitting Diodes. The first calculator determines the resistance for a
desired LED current while the second calculates the current for a given
resistance. [from Rob Paisley's Model Train web site] |
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Current-limit Switch is Digitally Programmable - 08/17/00 EDN-Design
Idea Current-limit switches are virtually ubiquitous in system controls.
They provide a safe means for regulating the current delivered to a load circuit.
The switches allow the load current to increase to a programmed limit but no
higher. Typically, the current limit is a function of the voltage across an
external resistor, produced by the current from a fixed source internal to the
switch IC. This..... [Design Idea by Budge Ing, Maxim Integrated Products,
Sunnyvale, CA] |
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Current-Limit Switch Is Digitally Programmable - Current-limit switches
are virtually ubiquitous in system controls. They provide a safe means for
regulating the current delivered to a load circuit. The switches allow the load
current to increase to a programmed limit but no higher. This application
note illustrates the implementation of a digitally programmable current-limit
switch using MAX890L a current-limited, high-side P-channel switch and MAX5160
digital potentiometer.....[Maxim Application Note 298]..... |
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Current-Limited DC/DC Converter Simplifies USB Power Supplies - DN252
Design Notes (Linear Technology) (app note added 2/06) |
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