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Current Limiter Circuits

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13.8 Volt 20A PSU - This is a Regulated DC power supply with short circuit protection and with current limiter.
13.8V 20A Power Supply - As is commonly the case, this supply was born of necessity. There is absolutely nothing special about the circuit, except that as shown, it is quite capable of up to 20 Amps intermittently or 10A continuous. Simply use a bigger transformer, bridge rectifier and more capacitors and output transistors to get more current. The basic circuit should be good for up to 100A or so, using a 5A TO3 regulator IC, but it can obviously be increased further (if you really do need a 500A supply!). ….(design)
9 Volt 2 Amp Power Supply - A simple 9 Volt 2 amp supply using a single IC regulator.
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 design)
Add Trimmable Current Limit to DC to DC Supply - 08/01/97 EDN-Design Ideas: You can add a simple, two-transistor circuit to a standard, step-down dc/dc converter to provide an adjustable limit for  output current. You can apply this method to most step-down converters that provide access to  feedback node.....(design idea)
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 ….(electronic design)
AN-8 Hiccup Mode Current Limiting - Application Note Microsemi 1303
Apex-AN09 Foldover Current Limiting - 2/1998, AN9UREVB : 217 Kb (Apex App Note)
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.....(design idea)
Circuit Provides Hiccup Current Limiting - 06/26/03 EDN-Design Ideas: Current-limit protection is an essential feature for power-supply systems. The three major types of current-limit-protection mechanisms are constant, fold back, 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 over current event, t.....(design idea)
Comparator Adds Current Limit to V2 Controller - 05/21/98 EDN-Design Ideas: The subroutine "FASTBCD" (Listing 1)for 8051 µPs quickly converts 16-bit binary to 24-bit BCD data. The conversion algorithm involves left-shifting bits from the high-order bit of the binary number into the carry bit while left-shifting the carry bits into the low-order bit of a BCD shift register using BCD left-shift operations.....(design idea)
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....(design idea)
Current limiter allows large USB bypass capacitance - 08/06/09 EDN  A current-sense amplifier limits inrush current.....(design idea)
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 over current destruction of a CMOS IC or group of ICs.....(design idea)
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 design)
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.
Current Limiting Resistor Calculator information - The calculators on this page can be used to find current limiting resistors and currents for Light Emitting Diodes…..(electronic design)
Current-Limit Switch Is Digitally Programmable - Maxim Application Notes / 298 / Dec-04  (app note)
Current-Limited DC/DC Converter Simplifies USB Power Supplies - DN252  Design Notes (Linear Technology) (app note)
Current-Llimit 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....(design idea)
Dual Current-Limiting Switch for USB Applications - Micrel Application Note 32 --  Dual Current-Limiting Switch for USB Applications (app note)
Filters & Power Dissipation Using the Power Design Tool Apex-AN39 - Apex App Note)
Hiccup Mode Current Limiting AN-8 - Application Note 8 from Microsem  (app note)
L200 PSU Regulator Circuit - easy to power supply with1-single L200 IC, offers a variable current limit of up to2 A, as well as voltage regulation
Network Linearizes DC/DC Converter's Current Limit Characteristics - 10/13/05 EDN -Design Ideas    Thermistor adds to efficiency, eliminates sense resistor.....(design idea)
Pira CZ Stereo Encoder for FM broADCasting - This stereo encoder is a halfway between analogue and digital processing. It combines the best from both domains to provide high-quality and easy to build device. The sampling frequency used in this stereo encoder is 97 times
Rechargeable Flashlight Obsoletes Lantern Battery - 12/11/03 EDN-Design Ideas: This Design Idea describes a high-intensity, rechargeable flashlight system that you can build from a 6V lantern-type flashlight. The rechargeable battery comprises four 2V, 2.5-Ahr (ampere-hour)SLA (sealed lead-acid) cells, similar in size to a standard D-sized battery. SLA cells are.....(design idea)
Simple & effective inrush current limiter stops surges - 08/02/07 EDN-Design Ideas: Active circuit and relay replace lossy negative-temperature-coefficient thermistor.....(design idea)
Soft Limiter for Oscillator Circuits Uses Emitter-Degenerated Differential Pair - 10/12/06 EDN-Design Ideas: Phase-shift network plus a few active components yields low-distortion output.....(design idea)
Stereo Limiter - Stereo Broadcast Limiter Circuit for Ramsey. ….(electronic schematic)
Voltage Reference sets Current limit  - 11/19/98 EDN-Design Ideas: (design idea)
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