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| Username | mrobbins |
| Name | Mike Robbins |
| Member Since | September 23, 2011 |
Now showing circuits 61-80 of 106. Sort by
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Current source proportional to time PUBLICA current source can source a current proportional to the current simulation time in transient analysis mode. by mrobbins | updated July 12, 2012 |
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Piecewise-linear Diode (Behavioral Sources) PUBLICA behavioral current source can be used to model an "ideal" piecewise-linear diode, conducting in one direction but not the other. by mrobbins | updated July 12, 2012 |
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2N3906 Switching Performance PUBLICSwitching (saturation turn-on/turn-off) times for 2N3906 PNP BJT. by mrobbins | updated July 02, 2012 |
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Three stage RC inverter ring oscillator PUBLICThree inverter stages in a ring, with RC for delay, create an oscillator. by mrobbins | updated June 22, 2012 |
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Rendering 16,000+ Circuits in the Cloud PUBLICIllustration for a CircuitLab blog post. by mrobbins | updated June 20, 2012 |
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Dots Demo PUBLICDemo of the new connection dots in the CircuitLab renderer. by mrobbins | updated June 11, 2012 |
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Sallen-Key Filter -- Op-amp Circuit Input Impedance PUBLICShows how to calculate the input impedance of an op-amp circuit, in this case a Sallen-Key filter. by mrobbins | updated May 15, 2012 |
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Renen's Blue LED (2.7V, 20mA) PUBLICAttempting to model a blue high-intensity LED which draws about 20mA at 2.7V bias. by mrobbins | updated April 20, 2012 |
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Two LEDs: separate vs shared resistor PUBLICTwo LEDs driven by a shared vs separate resistors -- how does current split if the two LEDs are slightly different? by mrobbins | updated April 05, 2012 |
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BJT PWM -- multi-stage rise/fall times PUBLICPower BJTs can be used to switch lots of current, but they require lots of base current as well. by mrobbins | updated March 28, 2012 |
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Revision of clabaccchio's "Rectifier" PUBLICOp-amp and diode rectifier. by mrobbins | updated March 28, 2012 |
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Digital Input Hysteresis ("Schmitt Trigger" behavior) PUBLICAll digital element inputs in CircuitLab currently show hysteresis effects (VIL=2.0, VIH=3.0). by mrobbins | updated March 22, 2012 |
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Diode Reverse Recovery Time Demo PUBLICDiodes have a "reverse recovery time". When switched from on to off, the space charge within the semiconductor must return to its original location. The diode appears to conduct briefly in reverse. by mrobbins | updated March 20, 2012 |
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Diode tester PUBLICby mrobbins | updated March 19, 2012 |
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Copy of jpeg2600's "p. 287 #43" PUBLICDemo of graphically solving a KCL/KVL/resistor problem using parameter sweep. by mrobbins | updated March 16, 2012 |
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CircuitLab as an In-Browser Graphing Calculator PUBLICCircuitLab's graphing and expression evaluation abilities make it possible to use as a general-purpose in-browser graphing calculator. by mrobbins | updated March 14, 2012 |
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Loop of voltage sources PUBLICLoops of ideal voltage sources can cause simulator issues. by mrobbins | updated March 10, 2012 |
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TL431-like shunt voltage regulator PUBLICBJT, op-amp, and internal reference voltage source make a model of a shunt voltage regulator by mrobbins | updated March 06, 2012 |
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LED / photodiode with optical connection by CCCS PUBLICA CCCS (Current Controlled Current Source) can be used to simulate the optical coupling between an LED and photodiode. by mrobbins | updated March 01, 2012 |
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Copy of danielfiction's 555 motor controller ($0.50!) PUBLICBuild a PWM motor controller for $0.50! Based on danielfiction's circuit (link inside). by mrobbins | updated March 01, 2012 |