LTspice Circuit Simulations & Examples

Explore the LTspice simulation circuits. Use these examples as starting points for larger designs.

Power electronics & control

Switching converter examples with FRA loop-response measurements, covering buck, forward, half-bridge and flyback.

Useful for: compensator validation, crossover frequency, phase and gain margins.

Open DC/DC stability calculator

AC analysis of three error-amplifier compensator circuits.

Useful for: Bode plots, pole/zero placement and compensation design.

Download Type I, II & III loop compensators simulation (.asc) Open loop compensator calculator

Transient analysis of an LT1117 adjustable regulator with output capacitors and a pulsed load.

Useful for: supply startup, output-voltage setting and load-step response.

Download Adjustable linear regulator simulation (.asc) Open voltage regulator calculator

Compare the AC response of three passive filter networks, including parasitic components.

Useful for: EMC calculation, sensor filtering, anti-aliasing and supply-ripple attenuation.

Download RC, LR & LC low-pass filters simulation (.asc) Open low-pass filter calculator

Comparator transient response showing switching thresholds and positive-feedback hysteresis.

Useful for: noisy inputs, threshold detection and hysteresis design.

Download Schmitt trigger simulation (.asc) Open Schmitt trigger calculator

Check DC gain and operating point, with an optional input-voltage sweep.

Useful for: opamp equalization, ADC input conditioning, sensor interfaces and non-inverting signal amplification.

Download Non-inverting op amp simulation (.asc) Open non-inverting op amp calculator

Check gain and polarity inversion, with an optional input-voltage sweep.

Useful for: opamp equalization, ADC input conditioning, analog gain stages and signal conditioning.

Download Inverting op amp simulation (.asc) Open inverting op amp calculator

Astable and monostable circuits showing oscillation and a triggered pulse.

Useful for: oscillators, pulse generation and timing intervals, square wave generation.

Download 555 timer simulation (.asc) Open 555 timer calculator

Capacitor charging transient with adjustable resistance and capacitance.

Useful for: delays, charging curves and first-order transient analysis.

Download RC time constant simulation (.asc) Open RC time constant calculator

DC operating point of an LED and its current-limiting resistor.

Useful for: indicator design, LED current and resistor sizing.

Download LED series resistor simulation (.asc) Open LED resistor calculator

DC analysis of a two-resistor divider, with an optional input-voltage sweep.

Useful for: voltage scaling, bias networks and sensing inputs.

Download Voltage divider simulation (.asc) Open voltage divider calculator