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13.8 Volt 20A PSU - This is a Regulated DC power supply with short circuit
protection and with current limiter. (added 6/03) |
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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 added 11/08) |
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9 Volt 2 Amp Power Supply - A simple 9 Volt 2 amp supply using a single IC
regulator. (added 6/03) |
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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 design added 04/05/06) |
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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
added 6/06) |
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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
….(electronic design added 6/07) |
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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.....(design idea added
6/06) |
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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, 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,
t.....(design idea added 1/05) |
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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
added 11/05) |
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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....(design idea added 11/05) |
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Current limiter allows large USB bypass capacitance - 08/06/09 EDN A
current-sense amplifier limits inrush current.....(design idea added 08/09) |
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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.....(design idea
added 6/06) |
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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 added 08/08/08) |
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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) |
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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…..(electronic design added 02/03/04) |
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Current-Limit Switch Is Digitally Programmable - Maxim Application Notes / 298 /
Dec-04 (app note added 5/08) |
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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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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 added 11/05) |
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Dual Current-Limiting Switch for USB Applications - Micrel Application Note 32 --
Dual Current-Limiting Switch for USB Applications (app note added 6/06) |
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Filters & Power Dissipation Using the Power Design Tool Apex-AN39 - Apex App Note
(added 08/08/08) |
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Hiccup Mode Current Limiting AN-8 - Application Note 8 from Microsem (app
note added 6/06) |
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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 (added 10/05) |
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Network Linearizes DC/DC Converter's Current Limit Characteristics - 10/13/05 EDN
-Design Ideas Thermistor adds to efficiency, eliminates sense
resistor.....(design idea added 6/06) |
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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…(added 08/08/08) |
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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 added 1/05) |
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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 added 9/08) |
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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 added 05/07) |
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Stereo Limiter - Stereo Broadcast Limiter Circuit for Ramsey. ….(electronic
schematic added 11/08) |
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Voltage Reference sets Current limit - 11/19/98 EDN-Design Ideas: (design idea
added 6/06) |
