5 ms·
You can actually do better than this - it's possible to build a switchable pulse, sawtooth and sine'ish wave oscillator from a single op-amp. During my childhoo
by hackermom 16y ago
You can actually do better than this - it's possible to build a switchable pulse, sawtooth and sine'ish wave oscillator from a single op-amp. During my childhood my father was heavily into electronics and electronic music, and one of his interests was designing and buildning his own analog synthesizers. One of his more compact feats for one of his many synthesizers was four three-wave oscillators built on a single TL074 (quad op-amp).
- joshu 16y agoYeah. Or a single transistor.
- Dav3xor 16y agoOr with Schmitt Triggers -- I built a little synth around a schematic from Music From Outer Space -- makes awesome Forbidden Planet type noises.
- jipumarino 16y agoSchematics. Now! ;)
- teledemic 16y agoAgreed - I would love to see it. The other requirement for this build was that it be resistance-controlled, so you can just throw whatever you want between the sensor leads.
- meatmanek 16y agoThis is what I came to point out. The 555 is a horrible waste of electronics for something as simple as an oscillator. (Also, iirc, 555 timers do nasty things to your rails.) You can get a better (50% duty cycle) out of a comparator/op-amp, a capacitor, and a few resistors. http://en.wikipedia.org/wiki/Relaxation_oscillator#Op_Amp.E2.80.93based_electronic_relaxation_oscillator http://en.wikipedia.org/wiki/Relaxation_oscillator#Op_Amp.E2... 555 timers are much more useful as one-shots, since that functionality is much more difficult to implement with a comparator.
- chipsy 16y agoThe 555 is probably used because of the influence of the Atari Punk Console(which is typically based on a dual 555 design).