Page 3 Limiter Electronic Circuits free Schematics

Limiter Circuits
Limiters: #'s - C D - K L - P S-Z
Last Updated on: Wednesday, June 02, 2021 05:07 AM

Circuits Designed by Dave Johnson, P.E. :

Limiting Amplifier-40Khz - 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 . . . [Hobby Circuit designed by David Johnson P.E., 07/09/06]


Links to electronic circuits, electronic schematics and designs for engineers, hobbyists, students & inventors:
	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. . . [Andy Collison's website] LED-Current Limiter Accepts AC or Dc - 07/14/11 EDN Design Idea Prevent excessive current from overdriving your LEDs. LED drivers have lots of features and require plenty of external components. When your application requires no PWM (pulse-width-modulated) dimming or controlled frequency operation, your primary concern may be that too much current could damage or destroy your LEDs. In this case, you can make a simple LED-current limiter from a common low-dropout linear regulator. The circuit in Figure 1 is an LED light bulb for a landscape-lighting system. Landscape lighting typically operates from 12V ac, and peak voltage is approximately 17V. Because the regulator is in series with the LED string, the LED-string current equals the regulator’s output current. . . [by Roger Griswold]
LED-Current Limiting Resistor Calculator - 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]

Got Designs?
Please eMail if you want me to link to and/or post your original design. Thanks.

Limiter-Threshold Noise Reduction-Using Models 32, 37 & 520 - No description, just schematic - OpAmps Lab Inc is the manufactor ofAmplifiers (Video / Audio / Distribution / Microphone / Equalization / Line / VCA / Power), switchers (Routing / Assign / Matrix), Mult (Press) (Network-Feed) Boxes, Audio Transformers, Oscillators, Power-Supplies, Custom Sub-Systems. . . . [Application OpAmps Lab Inc.]

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]

Over Voltage Protection for LM317 - It is a voltage regulator that allows a 6v portable supply to be derived from the 12v car battery. You can add a 6. 2V zener diode and a LED to warn you when the input supply is overvoltage. If you could find a relay that would operate from 6. 2v right up to 12v that you could connect in such a way that if over voltage occurred, . . . [submitted by Adam]

Over-/Under-Voltage Protection of Electrical Appliances - This circuit protects refrigerators as well as other appliances from over and under-voltage. Operational amplifier IC LM324 (IC2) is used here as a comparator. IC LM324 consists of four operational Amplifiers, of which only two operational Amplifiers (N1 and N2) are used in the circuit. . . . [© EFY Enterprises Pvt. Ltd. All rights reserved]

Passive circuit limits inrush current - 09/26/02 EDN Design Idea You would normally limit the inrush current during start-up of a rectifier circuit with a capacitor output filter by using the circuit in Figure 1. You insert a high resistance in series with the ac input or the dc output of the re. . . [by Sunil Tiwari and Mangesh Borage, Centre for Advanced Technology, Indore, India]

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. . .

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