Circuit Gallery

*## Header & Parameters
* Circuit created with KeliCAD



*## Main Circuit
* RC High-Pass Filter - AC Analysis
Vin in 0 AC 1

C1 in mid 10n
R1 mid out 100k
Rload out 0 1Meg



.ac dec 20 1 1Meg
.end

*## Header
* Dual Filter Circuit: High-Pass and Low-Pass with Python-Generated Noise
* Demonstrates both RC high-pass and low-pass filtering of the same noisy input signal


*## Input Stage
* Noisy input signal generated by Python
Vin in 0 PWL(${nois

*## Header
* Multi-Stage Audio Amplifier - Created with KeliCAD
* Demonstrates Python signals for custom input waveforms




*## Power Supply
* 9V DC power source
Vcc vcc 0 DC 9




*## Input Stage
* Input signal: AM-modulated audio generated by Pyth

*## Header
* RC Low Pass Filter - AC Analysis
* Demonstrates frequency response characteristics

*## Input Source
* AC voltage source for frequency sweep
Vin in 0 AC 1

*## Low Pass Filter
* R-C filter with fc = 1/(2*pi*R*C) ≈ 1kHz
R1 in out 1.59k
C1

*## Voltage Doubler Circuit
* Classic Villard half-wave voltage doubler
* Converts AC input to doubled DC output

*## Input Signal
* 5V peak, 1kHz sine wave with noise
Vin in 0 PWL(${am_signal})

*## Voltage Doubler Stage
* Coupling capacitor
C1 in m

*## Header
* Fuente de Alimentación 5V DC desde 110V AC
* Transformador simulado + Rectificador + Filtro + Regulador

*## Transformador (simulado)
* Simula secundario de transformador: 8V RMS @ 60Hz
* (110V AC primario -> 8V AC secundario)
Vac ac_in 

*## Header
* Full-Wave Rectifier with 10V DC Output
* Center-tapped transformer configuration

*## AC Input Sources (simulating center-tapped transformer)
* Center tap connected to ground (0V reference)
* Upper and lower windings swing ±10.7V relativ

*## Header & Parameters
* Low-Pass RC Filter with Noisy Input - Created with KeliCAD
* Demonstrates filtering of high-frequency noise from a signal

* Filter parameters - lower cutoff for better noise rejection
.param Fc=100      ; Cutoff frequency ~

* WiFi Wakeup Receiver: OOK carrier + Schottky envelope detector + amplifier
* LTspice version with LTC2063 op-amp models
*
* Signal chain: RF carrier -> envelope detector -> 2-stage amp -> comparator
* Carrier: 1MHz stand-in for 2.44GHz (keeps simul