are passive devices used in electronic circuits to control the flow of current. An ideal resistor has no associated
stray capacitance or inductance, and therefore performs exactly the same in a direct current (DC) circuit as it
does in an alternating current (AC) circuit at any frequency.
resistors made of physical components exhibit more than just a pure resistance when present in an AC circuit.
A common circuit simulator model is shown to the left. It includes the actual ideal resistor with a parallel capacitive
component representing inter-element (if present) mutual capacitance, and a series inductive component representing
lead and/or solder/bond pads that respond to
Related Pages on RF Cafe
alternating current. SPICE-type simulators
use this or an even more sophisticated model to facilitate more accurate calculations over a wide range of frequencies.
- Resistors & Resistance Calculations
- Resistor and Capacitor
Color Code Charts
- Resistor Markings
Parallel Water Filters
Like Parallel Resistors
Equations (formulas) for combining inductors in series and parallel are given below.