Language: EN

Tools

Small calculators I use for electronics design, free to use in your browser.

PCB design

  • Coplanar waveguide calculator

    Impedance of a grounded coplanar waveguide (CPWG) from its track, gap and substrate, with a table of PCB materials.

  • Microstrip calculator

    Impedance of a microstrip, a track on an outer layer over a ground plane, with a table of PCB materials.

  • Stripline calculator

    Impedance of a stripline, a track on an inner layer between two ground planes, with a table of PCB materials.

  • Trace width calculator (IPC-2221)

    How wide a PCB track must be for a current, on outer and inner layers, with its resistance and voltage drop.

Components

Power and battery

  • Battery life calculator

    How long a battery lasts for a device that sleeps and wakes up for short events, and which part uses the most.