Univibe Effect Pedal

Univibe pedal circuit diagram

Univibe electric guitar pedal circuit diagram

The UniVibe is well-known from Jimi”s use of it. The LFO is actually a phase shift oscillator, using the dual 250K pots inside the pedal assembly to control speed. A contemporary version would substitute an LED/photocell optocoupler for the four LDR”s and also the incandescent light bulb that makes the shifting function. This IS just a 4 stage phaser, possibly with some distortion from the signal path thrown in. Considering that the Univibe (r) is getting reissued by Dunlop, Dunlop most likely owns the “Univibe” trademark nowadays. This schematic bears no resemblance, except accidental, to the reissue that Dunlop or any person else might be developing.

This schematic diagram come from circuit: UniVibe Pedal.
Go to that page to read the explanation about above circuit design.

In the electrical sector, a schematic diagram is usually used to describe the design or model of equipment. Schematic diagrams are usually utilized for the maintenance and repair of electronic and electromechanical devices / units. Original schematics were made by hand, using standardized templates or pre-printed adhesive symbols, but nowadays Electrical CAD computer software is often used.

In electronic design automation, until the 1980s schematics were virtually the only formal representation for circuits. More lately, using the progress of computer system technology, other representations were introduced and specialized computer languages were developed, because with the explosive development of the complexity of electronic circuits, classic schematics are getting less practical. As an example, hardware description languages are indispensable for contemporary digital circuit design.

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