Tersa EDA
All components

Tersa EDA documentation

Passive components and transmission lines

Resistors, capacitors, inductors, and the ideal transmission line in Tersa.

A two-pin resistance. Resistance supports engineering units from ohms to megaohms. Use a resistor for loads, biasing, feedback, and RC or RL networks.

A three-pin resistive divider with these parameters:

  • Resistance — total resistance between the outer pins;
  • Position — wiper position from 0 to 1.

Connect the outer pins as a normal resistor and use the center pin as the wiper. Position can be exposed in a tuner.

A two-pin capacitance. Capacitance accepts an engineering unit. Use it in filters, decoupling networks, integrators, and resonant circuits.

A two-pin inductance. Inductance sets its value. For a real high-frequency component, include parasitics through a device model or equivalent circuit.

Two magnetically coupled windings with four pins: P1, P2, S1, and S2. Parameters are:

  • Primary inductance;
  • Secondary inductance;
  • Coupling — coupling coefficient from 0 to 1.

Use this component for transformers and coupled resonators. Winding starts are defined by pin roles and their SPICE order.

A four-pin ideal line with a differential pair at each end. Parameters are:

  • Z0 — characteristic impedance;
  • Delay — electrical delay.

Use it for circuit-level delay and matching estimates. Printed-line geometry is defined with the separate microstrip components.