This document presents a circuit design for a Single-Supply Wien Bridge Oscillator, noting its advantage of requiring only one op amp, which is ideal for battery-operated applications. The circuit operates from a single 9V battery and utilizes diodes to limit amplitude divergence without causing excessive distortion.
The text provides specific design equations and component values, recommending the OP-22 op amp for frequencies between 100Hz and 1kHz, and the OP-27 for higher frequencies. It details the selection of resistors and capacitors to achieve a target frequency of 1004Hz and an output of 6V peak-to-peak.
| Supply Voltage | Single 9V battery |
|---|---|
| Recommended Op Amp (Low Freq) | OP-22 |
| Recommended Op Amp (High Freq) | OP-27 |
| Frequency Range (OP-22) | 100Hz to 1kHz |
| Target Output Amplitude | 6V peak-to-peak |
| Diode Type | 1N914 or 1N4148 |
It requires only one op amp, which is particularly important for battery-operated applications.
The OP-27 is recommended for higher frequencies.
An oscillation output of 6V peak-to-peak is recommended.