Username mrobbins
Name Mike Robbins
E-mail
Member Since September 23, 2011

mrobbins's Public Circuits:

Now showing circuits 41-60 of 66. Sort by

Forcing initial capacitor voltage = 0

Forcing initial capacitor voltage = 0 PUBLIC

A time-controlled switch can be used to force a capacitor to start discharged.

by mrobbins | updated March 01, 2012

initial-conditions  

AC Power Supply (Transformer and Bridge Rectifier)

AC Power Supply (Transformer and Bridge Rectifier) PUBLIC

by mrobbins | updated February 04, 2012

bridge-rectifier   transformer  

BJT difference amp

BJT difference amp PUBLIC

by mrobbins | updated February 04, 2012

amplifier   bjt  

H-bridge

H-bridge PUBLIC

by mrobbins | updated February 04, 2012

diode   flyback   inductive   level-shift   mosfet   motor   power  

Diode cascade voltage multiplier

Diode cascade voltage multiplier PUBLIC

by mrobbins | updated February 03, 2012

diode  

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 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  

RC Low-pass Filter

RC Low-pass Filter PUBLIC

by mrobbins | updated January 08, 2012

Unicodful circuit name?euro:€ japanese:日本語 résumé

Unicodful circuit name?euro:€ japanese:日本語 résumé PUBLIC

résumé 日本語

by mrobbins | updated December 24, 2011

Two-Zener voltage clamp

Two-Zener voltage clamp PUBLIC

Two back-to-back zener diodes can be used to limit the voltage excursion of a signal.

by mrobbins | updated December 08, 2011

Op-amp Slew Rate Demo

Op-amp Slew Rate Demo PUBLIC

Demonstrates the limited slew rate of a real op-amp with a large square wave input.

by mrobbins | updated November 28, 2011

Op-amp output impedance

Op-amp output impedance PUBLIC

by mrobbins | updated November 13, 2011

Digital counter

Digital counter PUBLIC

by mrobbins | updated November 13, 2011

dac   digital   op-amp  

BJT saturation characteristic tester

BJT saturation characteristic tester PUBLIC

by mrobbins | updated November 13, 2011

bjt   saturation  

Switching inductive loads

Switching inductive loads PUBLIC

by mrobbins | updated November 11, 2011

diode   flyback   inductive   mosfet   power  

BJT f_T measurement

BJT f_T measurement PUBLIC

by mrobbins | updated November 11, 2011

bjt   frequency-domain   high-speed   rf  

Cascode current mirror -- actively loaded differential pair amp

Cascode current mirror -- actively loaded differential pair amp PUBLIC

Q1 and Q2 are the main amplification. The four PNP BJTs provide a cascoded current mirror for super high gain active load.

by mrobbins | updated November 01, 2011

amplifier   bjt   cascode  

Op-Amp logarithmic amp

Op-Amp logarithmic amp PUBLIC

An op-amp, diode, and resistor can together be used to create a logarithmic amplifier, where the output voltage is proportional to the log of the input voltage.

by mrobbins | updated October 25, 2011

amplifier   nonlinear   op-amp  

Verticalish circuit

Verticalish circuit PUBLIC

by mrobbins | updated October 21, 2011

Op-amp non-inverting amplifier

Op-amp non-inverting amplifier PUBLIC

by mrobbins | updated October 21, 2011

amplifier   op-amp