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12-60V Constant Current LED Driver + PWM Dimmer

12-60V Constant Current LED Driver + PWM Dimmer PUBLIC

by serisman | updated June 07, 2013

555   constant-current   led   led-driver   led-string   pwm  

555 Adjustable duty cycle square wave oscillator

555 Adjustable duty cycle square wave oscillator PUBLIC

By adjusting R2, the output duty cycle can be adjusted. There is a trade-off, though, in that this adjustment also modifies frequency.

by robpaige | updated December 05, 2013

555  

555 as astable (oscillator)

555 as astable (oscillator) PUBLIC

555 timer as a square wave oscillator (astable mode)

by mrobbins | updated January 24, 2012

555   oscillator   time-constant  

555 as Pulse Width Modulation (PWM) generator

555 as Pulse Width Modulation (PWM) generator PUBLIC

555 timer as a PWM generator based on an analog input source.

by mrobbins | updated January 24, 2012

555   pwm  

555 Astable

555 Astable PUBLIC

by patrick.laurin.3 | updated June 14, 2014

555  

555 Bistable Circuit

555 Bistable Circuit PUBLIC

by borticus | updated February 18, 2013

555   bistable   timer  

555 Clock for fan speed control

555 Clock for fan speed control PUBLIC

A 25 kHz clock circuit, set to about 75 % duty cycle, using a 555 timer.

by Sancho_P | updated November 07, 2012

555   behavioral-sources   fan-speed-control   newbie   ntc   pwm  

555 disparo alto salida bajo

555 disparo alto salida bajo PUBLIC

by santy | updated November 15, 2012

555   monoestable  

555 disparo bajo salida alto

555 disparo bajo salida alto PUBLIC

by santy | updated November 14, 2012

555   monoestable  

555 Dual-LED blinker with 50% duty cycle

555 Dual-LED blinker with 50% duty cycle PUBLIC

by mk5734 | updated August 01, 2018

555   pwm  

555 LDR delay timer

555 LDR delay timer PUBLIC

LDR controller motor drive with turn on delay

by signality | updated October 15, 2013

555   ldr   monostable   photoresistor   schmitt-trigger  

555 LED Flasher Tutorial

555 LED Flasher Tutorial PUBLIC

Tutorial on how to build and measure a CircuitLab circuit. Use Time Domain Simulation to measure positive voltage at the anode of the LED. Use start time 0, end 5, stop time .25, and you'll see a...

by stevel | updated June 21, 2013

555   beginner   tutorial  

555 Monostable circuit

555 Monostable circuit PUBLIC

by Beera1 | updated October 09, 2018

555  

555 motor controller

555 motor controller PUBLIC

555 oscillator easy motor control. not so stable. very effective.

by danielfiction | updated March 02, 2012

555   555-motor-controller   astable   bjt   cheap   dfiction   econo   flyback-diode   motor   pwm  

555 Oscillator

555 Oscillator PUBLIC

Yet another 555-timer-based oscillator.

by JamesFysh | updated March 20, 2012

555   oscillator  

555 PWM for fan speed control

555 PWM for fan speed control PUBLIC

I wanted to control a computer’s fan speed by the air temperature at the “hot spot” (the power supply air outlet). The project consists of three parts for easy simulation and was later verified on a...

by Sancho_P | updated November 07, 2012

555   behavioral-sources   fan-speed-control   newbie   ntc   pwm  

555 PWM Generator

555 PWM Generator PUBLIC

The simplest PWM generator possible. Tested and approved in real-life. Cheap and reliable!!

by GabrielPauka | updated April 26, 2016

555   pwm  

555 timer - MonoStable

555 timer - MonoStable PUBLIC

by captain_bibo | updated September 21, 2013

555   monostable   timer  

555 Timer 50% Duty Cycle

555 Timer 50% Duty Cycle PUBLIC

The circuit generates a 50% Duty Cycle Square Wave using a 555 Timer. The integrator comprised of OA1 generates the triangle wave. OA2 serves to buffer the Square wave. Feed the Triangle Wave into a...

by Researchsupportspec2 | updated April 24, 2022

555   triangle-generator  

555 Timer as Astable Multivibrator (Oscillator)

555 Timer as Astable Multivibrator (Oscillator) PUBLIC

A 555 timer can be used with a few resistors and a capacitor to make an oscillator, switching states as the capacitor charges and discharges.

by CircuitLab | updated June 07, 2017

555   oscillator   time-constant  

More tags

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