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Limiter Circuits
Limiters:  #'s - C      D - K      L - P      S-Z
Last Updated on: Friday, August 21, 2015 05:57 AM


Circuits Designed by Dave Johnson, P.E. :
40KHz Limiting Amp -  This circuit has a gain of X20 at 40KHz. The Amplifier output level is limited to 2. 5v peak to peak. Limiting action begins with a 50v peak to peak input . . . [Circuit by David A. Johnson P.E.,  07/09/06]

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

24V Overvoltage Regulator Withstands 150V at VIN -  The LT4356 surge stopper protects loads from high voltage transients. It regulates the output during an overvoltage event, such as load dump in automobiles, by controlling the gate of an external N-channel MOSFET. The output is limited to a safe value thereby allowing the loads to continue functioning. The LT4356 also monitors. . .  [Linear Technology App Note, Apr 26th 2010]

 

28V Vehicle Application with Reverse Voltage Protection -  The LTC4366 surge stopper protects loads from high voltage transients. By controlling the gate of an external N-channel MOSFET, the LTC4366 regulates the output during an overvoltage transient. The load may remain operational while the overvoltage is dropped across the MOSFET. Placing a resistor in the return line isolates the LTC4366 and allows it to float up with the supply; therefore, the upper limit on the output voltage depends only on the availability of high valued resistors and MOSFET ratings. . . .  [Linear Technology App Note, Jan 16th 2012]

40KHz Limiting Amp -  This circuit has a gain of X20 at 40KHz. The Amplifier output level is limited to 2. 5v peak to peak. Limiting action begins with a 50v peak to peak input . . . [Circuit by David A. Johnson P.E.,  07/09/06]

 

4A, 12V Overvoltage Output Regulator -  The LT4356 surge stopper protects loads from high voltage transients. It regulates the output during an overvoltage event, such as load dump in automobiles, by controlling the gate of an external N-channel MOSFET. The output is limited to a safe value thereby allowing the loads to continue functioning. The LT4356 also monitors. . .  [Linear Technology App Note, Apr 26th 2010]

5V System Protected from ± 24V Power Supplies -  The LTC4360 overvoltage protection controller safeguards 2. 5V to 5. 5V systems from power supply overvoltage. It is designed for portable devices with multiple power supply options including wall adaptors, car battery adaptors and USB ports. The LTC4360 controls an external N-channel MOSFET in series with the input power. . .  [Linear Technology App Note, Apr 26th 2010]

 

5V System Protected from ±24V Power Supplies and Overcurrent -  The LTC4362 monolithic overvoltage/overcurrent protector safeguards 2. 5V to 5. 5V systems from power supply overvoltage. It is designed for portable devices with multiple power supply options including wall adaptors, car battery adaptors and USB ports. The LTC4362 features a soft-shutdown controlled by the ON pin and drives. . .  [Linear Technology App Note, Jul 8th 2011]

 

5V System Protected from 80V Overvoltage -  The LTC4360 overvoltage protection controller safeguards 2. 5V to 5. 5V systems from power supply overvoltage. It is designed for portable devices with multiple power supply options including wall adaptors, car battery adaptors and USB ports. The LTC4360 controls an external N-channel MOSFET in series with the input power. . .  [Linear Technology App Note, Apr 26th 2010]

 

Active Power Zener -  Schematic only. . . .  [Tony van Roon's circuit]

 

Add-On Current Limiter -  This circuit allows you to set a limit on the maximum output current available from your PSU. It's very useful when you power-up a project for the first time - or carry out a soak-test. By setting an upper limit on the current available from your PSU - you can protect both your power supply - and any device connected to it. . .  [Circuit designed by Ron J.]

 

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 you power-up a project for the first time - or carry out a soak-test. By setting an upper limit on the current available from your PSU - you can protect both your power supply - and any device connected to it. It offers a simple and cheap alternative to the Current Limiting Power Supply. . . .  [Circuit design by Ron J.]

 

AN-31 Over Voltage Protection on AC Adapter Input -  Application Note Microsemi 1314 . . .  [Microsemi Corp]

 

Circuit forms high-frequency polarity clamp -  04/11/02 EDN Design Idea   You need a negative signal clamp to protect an ADC against negative-going signals while measuring the positive pulse shape of the signal by digitizing the waveform. In other words, you must clamp negative signals at 0V. The circuit. . .  [by Shyam Tiwari, Sensors Technology Private Ltd, Gwallor, India]

 

Circuit guards Amplifier outputs against overvoltage -  07/05/07  EDN Design Idea   An automotive-protection circuit withstands repeated insults of direct short circuits to the full battery voltage. . .  [by John Guy, Maxim Integrated Products, Sunnyvale, CA]

 

Circuit limits DV/DTand Capacitor inrush at Regulator Turn On -  11-Oct-07 EDN Design Idea   Adding a simple circuit to the adjust pin of a regulator controls the dV/dt of the output voltage, limiting inrush current. . .  [by W Stephen Woodward, Chapel Hill, NC]

 

Complete 12V Automotive Undervoltage, Overvoltage and Reverse-Supply Protection Circuit -  The LTC4365 is a unique solution that elegantly and robustly protects sensitive circuits from unpredictably high or negative supply voltages. The LTC4365 blocks positive voltages as high as 60V and negative voltages as low as –40V. Only voltages in the safe operating supply range are passed along to the load. The only external. . .  [Linear Technology App Note, Sep 19th 2011]

 

Current Limit Protects Power Bus -  12/18/97 EDN Design Idea   The circuit in Figure 1 protects a power bus from a load short within a guaranteed 2 µsec; a short could otherwise pull down the bus, affecting other loads. The circuit also controls inrush current to bypass capacitors during hot-swap (hot insertion) , another situation in which bus voltage could otherwise experience a droop. You can individually set the two current limits. Power-on reset and logic controls allow complete µP interfacing. . .  [by Ron Lenk, Temic/Siliconix, Santa Clara, CA]

 

Current Limiter Allows Large USB Bypass Capacitance -  08/06/09  EDN Design Idea   A current-sense Amplifier limits inrush current. . .  [by Daniel Morris, Group IV Technology, Renton, WA]

 

Current limiter provides latch-up signal -  01/01/98 EDN Design Idea   Current-limiting circuit both signals a latch-up condition and prevents latch-up-induced overcurrent destruction of a CMOS IC or group of ICs. . .  [by Hartmut Henkel, von Hoerner & Sulger GmbH, Schwetzingen, Germany]

 

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. . . .  [Design by Ron J.]

 

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]

 

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 hi. . .  [by Budge Ing, Maxim Integrated Products, Sunnyvale, CA]

 

Current-Limit Switch Is Digitally Programmable -  App Note - / 298 / Dec-04. . .  [Maxim Integrated]

 

Current-Limited DC/DC Converter Simplifies USB Power Supplies -  DN252 Design Notes (Linear Technology) . . .  [Linear Technology]


Limiter Circuits
Limiters:  #'s - C      D - K      L - P      S-Z


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