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* RC Low-Pass Filter V1 in 0 PULSE(0 5 0 1n 1n 0.5m 1m) R1 in out 10k C1 out 0 100n .tran 10u 5m
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Circuit: RC Low-Pass Filter
Doing transient analysis...
501 data points, 23ms
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Classic transient analysis — square wave input through an RC network produces the characteristic exponential charge/discharge response.
Timer IC in free-running mode — the capacitor ramp between comparator thresholds generates a square wave output.
Single-stage BJT amplifier with AC analysis — input sine wave is amplified and phase-inverted at the collector.
In monostable (one-shot) mode, the 555 produces a single timed pulse when triggered by a falling edge on the trigger pin. - Pulse width: T = 1.1 R C With R = 100k and C = 10uF: T = 1.1 100k 10u =
Quantifies the clock noise artifacts inherent to switched-capacitor synthesis and demonstrates the reconstruction filter: a 2nd-order Sallen-Key Butterworth LPF at 40 kHz. The raw SC biquad output (sw
LLC resonant converter targeting 390V, 180V, and 24V DC rails
LLC resonant converter with coupled inductors - targets 390V, 180V, 24V rails
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The 555 timer in astable mode produces a continuous square wave without any external trigger. Two resistors (Ra, Rb) and a capacitor (C1) set the frequency and duty cycle. - Frequency: f = 1.44 / ((Ra
In monostable (one-shot) mode, the 555 produces a single timed pulse when triggered by a falling edge on the trigger pin. - Pulse width: T = 1.1 R C With R = 100k and C = 10uF: T = 1.1 100k 10u =
The Colpitts oscillator uses a capacitive voltage divider (C1, C2) with an inductor (L1) to form the resonant tank circuit. The BJT provides gain to sustain oscillation. - Oscillation frequency: f = 1
Demonstrates the core principle of the Timbre synthesizer: a switched-capacitor biquad bandpass filter driven into self-oscillation by adjusting the Q-control feedback. Three configurations are swept:
The inverting amplifier is a fundamental op-amp circuit. The input signal connects through R1 to the inverting (-) input, and feedback resistor Rf sets the gain. - Gain: Av = -Rf / R1 - Input impedanc
An op-amp with no feedback acts as a comparator: the output swings to the positive or negative rail depending on which input is higher. - If V(+) V(-): output goes to +Vcc - If V(+) < V(-): output go
A transimpedance amplifier (TIA) converts the tiny current from a photodiode into a usable voltage. The op-amp holds the photodiode at virtual ground, and the feedback resistor Rf sets the conversion
A first-order passive RC lowpass filter with a cutoff frequency of approximately 1.59 kHz. The -3dB frequency is: fc = 1 / (2 pi R C) With R = 1k and C = 100nF: fc = 1 / (2 pi 1000 100e-9) = 159
The simplest and most fundamental circuit: two resistors dividing an input voltage. Vout = Vin R2 / (R1 + R2) With R1 = 10k and R2 = 10k: Vout = 5V 10k / (10k + 10k) = 2.5V
Passive RC filters roll off at a gentle -20 dB/decade. For serious filtering -- anti-aliasing before an ADC, crossover networks in audio, sensor signal conditioning, biomedical instrumentation -- you
The output stage of nearly every analog audio amplifier ever built. From vintage hi-fi receivers to guitar amps to PA systems, the complementary push-pull topology drives speakers efficiently while ke
Need 15V from a 5V supply but have no room for an inductor? The Dickson charge pump generates high voltage from low voltage using only capacitors and diodes -- no magnetics, no transformers. Used in E
LLC resonant converter targeting 390V, 180V, 24V rails - optimized inductor values
LLC resonant converter targeting 390V, 180V, and 24V DC rails
LLC resonant converter with coupled inductors - targets 390V, 180V, 24V rails
Every phone charger, laptop regulator, server VRM, and EV power module uses a buck converter. It is THE circuit of modern power electronics -- converting a higher DC voltage to a lower one with 90%+ e
Switch-level model of the SC biquad self-oscillator from Sim 1, replacing continuous-time equivalent resistors with actual voltage-controlled switches and two-phase non-overlapping clock (500 kHz). De
Triangle/square wave relaxation oscillator using SC integrator + CT Schmitt trigger comparator. Demonstrates the second oscillation mode available in the CY8C29466's analog fabric. Uses only 2 of 12 a
Core patent claim demonstration: audio-rate topology reconfiguration. A sustained biquad self-oscillation at 1592 Hz transitions to relaxation oscillation at 1139 Hz mid-note via behavioral conductanc
Quantifies the clock noise artifacts inherent to switched-capacitor synthesis and demonstrates the reconstruction filter: a 2nd-order Sallen-Key Butterworth LPF at 40 kHz. The raw SC biquad output (sw
Above 50 MHz, a wire is no longer just a wire. It becomes a transmission line with characteristic impedance, propagation delay, and reflections. This is THE single biggest cause of signal integrity fa
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Question: Does the organ's own TOD divider square wave produce a measurable signal at a pickup electrode near the contact rail? The Circuit The Wurlitzer 555's Top Octave Divider (TOD) chain produces
Context: Sim 1(https://spicebook.warehack.ing/notebook/wurlitzer-555-ac-coupling-feasibility-sim-1-64986777) confirmed that AC coupling produces measurable pickup voltage across the key travel range.