Audio Test Oscillator: |
Few Extra Components Stabilize Oscillator:
02/15/96 EDN-Design Ideas |
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Programmable oscillator uses digital potentiometers:
03/07/2002 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. Figure 1 shows
a typical diode-stabilized Wien-bridge oscillator
that generates accurate sine waves fro... . |
Sine Wave Generator: |
The Wien bridge oscillator is reborn:
06/13/2002 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) |
Wein 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.
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Wein 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 and generate a test signal
pure enough for testing modern op amps and
high-resolution A/D converters. |
Wein Bridge Oscillator: |
Wein Bridge Theremin: |