signality's Profile

Finding the parallel resistance across CL capacitors 01 PUBLIC

If CL applies the same sort of techniques as SPICE then CL probably places a very high value resistor in parallel with a capacitor as part of the model. This simulation presents three ways to find the...

by signality | updated March 13, 2013

capacitor-leakage   parallel-resistance   parasitic-resistance  

generic voltage mode buck converter 01 PUBLIC

A generic Voltage Mode Buck (step down) converter. You will have to calculate component values for your own application.

by signality | updated March 13, 2013

buck-converter   pwm   smps   step-down-converter   switch-mode-power-supply   switch-mode-supply   switching  

the effect of source resistance 01 PUBLIC

by signality | updated March 12, 2013

Thevenin and Norton equivalent circuits 01 PUBLIC

Demonstrating Thevenin and Norton equivalence using behavioural voltage controlled resistors as swept load resistances. Simulate > DC Sweep > Run DC Sweep

by signality | updated March 11, 2013

behavioural-resistor   norton-source   thevein-norton-equivalent   thevenin-source  

PWM output voltages PUBLIC

3 different ways to boost the output of the fixed 5V PWM block. Simulate > Time Domain > Run Time-Domain Simulation

by signality | updated March 10, 2013

Simple behavioural transformer 01 PUBLIC

A simple ideal behavioural transformer with any turns ratio. Perfectly linear, no parasitics. No primary inductance so it works down to DC.

by signality | updated March 07, 2013

behavioural-transformer   ideal-transformer   transformer  

DC Sweep find max power in load 01 PUBLIC

Sweep the value of Rload to plot power in it. Simulate > DC Sweep > Run DC Sweep

by signality | updated March 06, 2013

dc-transformer   ideal-transformer   maximum-power   maximum-power-transfer  

pushbutton operated 4 state dual SPST switches 01 PUBLIC

by signality | updated March 05, 2013

4-state-spst-switch   divide-by-4   pushbutton  

MOSFET Royer-like oscillator 01 PUBLIC

V1 (vcc) has exponential ramped startup to kick-start oscillation. XFRMR1 forms a centre tapped inductor However, CL takes a long time to run the simulation. Simulate > Time Domain > Run Time-Domain...

by signality | updated March 01, 2013

initial-conditions   oscillator   oscillator-startup   royer   startup   time-step  

4:1 MUX PUBLIC

A 4:1 single bit logic multiplexer

by signality | updated February 27, 2013

4-1-mux   logic-multiplexer   mux  

Wheatstone Bridge 01 PUBLIC

A Wheatstone bridge with a short circuit between the x and y nodes. Simulate > DC Sweep > Run DC Sweep

by signality | updated February 26, 2013

resistor-matching   resistor-measurement   wheatstone-bridge  

Wheatstone Bridge 02 PUBLIC

Measuring or matching high value resistors using a Wheatstone Bridge and an opamp transimpedance (Vout/Iin; i.e. a current to voltage converter) amplifier. Simulate > DC Sweep > Run DC Sweep

by signality | updated February 26, 2013

resistor-matching   resistor-measurement   wheatstone-bridge  

limiter 02 PUBLIC

A precision, open loop limiter with anti-saturation diode D3 in and out of circuit (switched by swept value of R8). Simulate > DC Sweep > Run DC Sweep

by signality | updated February 26, 2013

limiter   precision-clamp   precision-limiter  

limiter 01 PUBLIC

A simple, fast, open loop limiter with crude Vbe offset and temperature compensation. Simulate > DC Sweep > Run DC Sweep

by signality | updated February 26, 2013

fast-limiter   limiter  

simple piecewise linear approximation using diode function generator 01 PUBLIC

A basic diode function generator. 2 break points, 3 slopes. Crude offset and temperature compensation. F5 to simulate.

by signality | updated February 26, 2013

curve-fitting   diode-function-generator   non-linear-amplifier   piecewise-linear  

constant current source LED driver linear 01 PUBLIC

A precision current source. Simulate > Time Domain > Run Time-Domain Simulation

by signality | updated February 24, 2013

constant-current-source   current-source   opamp-current-source   precision-current-source  

constant current sink LED driver linear 01 PUBLIC

A precision current sink using an opamp. Simulate > Time Domain > Run Time-Domain Simulation

by signality | updated February 24, 2013

constant-current-sink   current-sink   opamp-current-sink   precision-current-sink  

Programmable current sink 01 PUBLIC

A programmable current sink with an exponential rise/fall time. WHEN FIRST POSTED, THIS USED TO SIMULATE. IT NOW DOES NOT!

by signality | updated February 24, 2013

constant-current   current-sink   current-source  

Forcing initial inductor current 02 PUBLIC

A behavioural current source can be used to force an inductor to start with a given current through it.

by signality | updated February 22, 2013

inductor-current   initial-conditions  

Forcing initial capacitor voltage 02 PUBLIC

A behavioural voltage source can be used to force a capacitor to start with a given voltage across it.

by signality | updated February 22, 2013

capacitor-voltage   initial-conditions