Audio Test Oscillator - As a piece of test equipment, an audio oscillator has to be considered essential for anyone working in with hi-fi gear. Toger with an audio millivoltmeter (as described in Project 16), and even better if you have access to an oscilloscope, you will be able to make proper measurements on everything from preamps, RIAA equalization stages (for vinyl disks), tone controls,....(added 4/02)

Few Extra Components Stabilize Oscillator - 02/15/96 EDN-Design Ideas: The circuit beneath the dashed line in Figure 1 is the well-known Wien-bridge oscillator. The lamp is a common tungsten incandescent bulb. Its resistance forms a substantial part of the gain-setting network. For the oscillator to function properly, the increase in lamp resistance accruing from the ac signal must bring the open-loop.....(design idea added 3/03)

Low Distortion Wien Bridge Oscillator - low distortion wein bridge oscillator: 15Hz, 150kHz  (schematic added 08/08/08)

LT3465A-2.4MHz White LED Step-Up Converters with Built-In Schottky in ThinSOT - Linear Technology Switching Regulator (app note added 6/06)

Programmable Oscillator uses Digital potentiometers - 03/07/02 EDN-Design Ideas: Digital potentiometers are versatile devices; you can use them in many filtering and waveform-generation applications. This Design Idea describes an oscillator in which setting the resistance of two digital potentiometers independently programs the oscillation amplitude and frequency.....(design idea added 1/05)

Single Resistor Controls Wien Bridge Oscillator Frequency - AB-112 Analog Devices Application Notes  (app note added 6/06) Frequency control can be added to the conventional Wien Bridge Circuit by adding an op amp inverter.

Single-Supply Wien Bridge Oscillator - Operational amplifier U1A, in conjunction with the parallel and series RC legs, form a frequency determining network, while U1B, Field Effect Transistor (FET) Q1, and associated components form an amplitude regulating circuit that prevents the output waveform from saturating. The 0.1 microfarad capacitor...(added 05/08)

The Wien bridge Oscillator is reborn - 06/13/02 EDN-Design Ideas: In 1940, William Hewlett and David Packard launched a product from a garage. The product was a Wien-bridge oscillator. It consisted of a single-pole highpass filter in series with a single-pole lowpass filter. To keep the gain constant, the circuit used an incandescent pilot light to provide AGC (automatic gain control).....(design idea added 1/05)

Two Transistor Wein Bridge Oscillator - Scroll Down to find this circuits.  Here is a two-transistor Wien bridge oscillator using an ordinary night-light bulb for stabilization. The output is about 6 volts p-p and can drive fixed loads as low as 2 or 3 thousand ohms without additional buffering. A 10 k amplitude potentiometer….(added 05/05/05)

Wien Bridge Oscillator Andy - This circuit produces an extremely low distortion sine-wave, in spite of the non-linear devices used for amplitude limiting (D1 and D2). The reason is first that distortion (harmonics) are fed to the minus input of the opamp with far less loss than to the plus input....  Designed by Andrew R. Morris  (added 09/05)

Wien Bridge Oscillator is Reborn - 06/13/02 EDN-Design Ideas: In1940, William Hewlett and David Packard launched a product from a garage. product was a Wien-bridge oscillator. It consisted of a single-pole highpass filter in series with a single-pole lowpass filter.....(design idea added 3/03)

Wien Bridge Oscillator keeps THD BeLow One PPM - 11/10/94 EDN-Design Ideas: The Wien-bridge sine-wave oscillator uses a light bulb to stabilize its amplitude. The circuit doesn't have a light bulb; it sports several enhancements that lower its distortion.....(design idea added 01/04)

Wien Bridge Oscillator Rail-to-Rail Sine Wave Generator  - Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc.  (app note added 6/06)

Wien Bridge Oscillator-42003.0 - Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc.  (app note added 6/06)

Wien Bridge Theremin - (circuit / schematic added 2/03)

Wien-Bridge oscillator has simplified frequency control - In this article, a modified version of the classical circuit that uses a single low-cost variable resistor for frequency control will be described. (electronic design added 05/06/07)

Wien-bridge Theremin (Arthur Harrison) - This circuit is a basic theremin with only a pitch control. It uses the "heterodyne" technique, as did Theremin's original instrument. Heterodyning is advantageous in its simplicity, and is made further attractive in this design by eliminating the coils that are usually hard to find.....(electronic design 10/05)