What is the formula for Wien Bridge Oscillator Frequency?

The Wien Bridge Oscillator Frequency formula is f = 1 / (2π × R × C), where f—Oscillation frequency (Hz); R—Resistance of each RC section (Ω); C—Capacitance of each RC section (F).

What does f mean in the Wien Bridge Oscillator Frequency formula?

f is Oscillation frequency (Hz).

Wien Bridge Oscillator Frequency

Q: How do you calculate Wien Bridge Oscillator Frequency?

Use the formula f = 1 / (2π × R × C). The Wien bridge oscillator produces a low-distortion sine wave at a frequency set by equal RC sections in a series-parallel feedback network. Enter the values you know in the calculator above and it solves for the remaining variable.

f = 1 / (2π · R · C)

Calculator

Frequency

Resistance

Capacitance

Result

—

Formula

f = 1 / (2π × R × C)

Description

The Wien bridge oscillator produces a low-distortion sine wave at a frequency set by equal RC sections in a series-parallel feedback network. At this frequency the network has zero phase shift and an attenuation of exactly 1/3, so an amplifier with a gain of 3 sustains oscillation. It is the classic audio-frequency sine source and the basis of many function generators.

Variables

f — Oscillation frequency (Hz)
R — Resistance of each RC section (Ω)
C — Capacitance of each RC section (F)

Practical Notes

Needs amplitude stabilisation (a lamp, JFET, or AGC) to hold gain at exactly 3—too little and it stops, too much and it clips. Use matched, stable R and C for accurate frequency.

Related Concepts

All Timing & Oscillators formulas →

555 Timer Astable 555 Timer Monostable Crystal Load Capacitance RC Oscillator Frequency Crystal Frequency Stability PLL Lock Time VCO Tuning Sensitivity Jitter from Phase Noise

Need more features?

Save calculations, import telemetry data, simulate battery discharge, and collaborate with your team.

Try the App