Electronics calculators
Calculators for components, analogue circuits, filters, timers and power supplies, grouped by what you are working on. Each shows its equations and assumptions.
112 calculators across 12 groups.
Resistors & networks
Values, colour codes, resistance networks, power and noise.
Capacitors & inductors
Reactance, stored energy, transients, resonance and markings.
Voltage dividers & sensors
Scale voltages, set references and connect sensors to circuits.
Amplifiers & analogue
Gain, offset, precision, current sensing and op-amp behaviour.
Inverting amplifier
Non-inverting amplifier
Voltage follower
Difference amplifier
Weighted summing amplifier
Gain and offset mapper
Single supply AC amplifier
Instrumentation amplifier
Practical integrator
Practical differentiator
Photodiode transimpedance
Comparator hysteresis
Precision rectifier
Op-amp current source
Current sense amplifier
Op-amp oscillators
Peak detector and sample hold
Capacitive load driver
Virtual ground rail splitter
SAR ADC amplifier driver
Filters & frequency response
Shape signals with active filters, passive networks and notches.
Timers & oscillators
Generate pulses, set delays and calculate clock behaviour.
Transistors & thermal
Bias, switching, gate drive, protection and heat dissipation.
BJT saturated switch
BJT DC bias and load line
BJT small-signal amplifier
Zener and BJT series-pass regulator
BJT current mirrors
BJT differential pair
MOSFET switch and gate-drive losses
P-channel load switch and reverse protection
Hot-swap inrush and SOA
Inductive-load clamp and release
Bootstrap gate-drive supply
Thermal path and heatsink
Optocoupler transistor interface
Linear power supplies
Regulators, rectifiers, reservoir capacitors and ripple.
Switching power supplies
Converters, magnetics, efficiency, compensation and EMI.
Buck converter
Boost converter
Inverting buck-boost converter
Four-switch buck-boost converter
SEPIC converter
Ćuk and Zeta converter
Flyback converter
Forward converter
Push-pull, half-bridge and full-bridge
Switched-capacitor charge pump
Switching LED driver
Power magnetics and winding
Output capacitor and load transients
Input capacitor and damped EMI filter
RC snubber and RCD clamp
Switch, rectifier and efficiency budget
Converter loop compensation
Soft start, inrush and slope compensation
Conducted EMI differential-mode estimate
Power-converter topology comparison
ADC, DAC & signal levels
Resolution, dynamic range, decibels and signal-chain errors.
Digital & interfaces
Logic, number bases, pull-ups, baud rates and clock accuracy.
Everyday electronics
LEDs, batteries, unit conversions, cable drop and AC power.
Calculations stay in your browser. Each calculator includes its equations and assumptions.