Design, size, verify

Each tool opens an interactive calculator with assumptions, sanity checks and practical sizing guidance.

04

Fundamentals & passive networks

Electrical relationships, dividers and passive component networks.

Ohm’s Law CalculatorCalculate voltage, current, resistance and power from any two values.Voltage DividerSize a loaded or unloaded divider with practical preferred resistor values.Resistor NetworkAnalyse series or parallel resistors, including tolerance and power stress.Capacitor NetworkBuild a series or parallel bank and check voltage stress and stored energy.

04

Power & energy

Biasing, protection, transients and real-world power autonomy.

LED ResistorChoose a preferred series resistor and verify its thermal margin.Zener Diode RegulatorSize a shunt regulator and check worst-case Zener and resistor dissipation.Capacitor ChargeVisualise the transient and verify precharge, inrush current and bleed-down.Battery LifeModel four power modes and detect peak-current brownout risks.

04

Signal processing & timing

Filters, timing circuits and closed-loop analogue building blocks.

Reactance / Resonance CalculatorCalculate inductive and capacitive reactance, LC resonance frequency, and series RLC impedance, quality factor and bandwidth online.RC / RL FilterDesign loaded first-order low-pass or high-pass RC and RL filters.555 TimerCalculate frequency, duty cycle and pulse width in astable or monostable mode.Operational AmplifierExplore six op-amp circuits and check closed-loop gain and output rails.

05

Interfaces & data acquisition

From sensors and logic interfaces through digital conversion.

Logic Level Compatibility CheckerCheck CMOS and TTL logic level compatibility, calculate HIGH and LOW noise margins, and identify voltage mismatches between digital circuits.Pull-up / Pull-downSize GPIO biasing from logic thresholds, current and rise-time limits.RTD Measurement LabEvaluate Pt100/Pt1000 wiring, self-heating and ADC resolution.ADC / DAC CalculatorConvert an analogue voltage to a digital code, or a code back to voltage.BER Confidence LevelTurn bit rate, test time and measured errors into BER confidence.