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Oscillator and vibrator schematics

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Oscillators

Oscillators

Modern wave generators use many different circuits and generate such outputs as SINUSOIDAL, SQUARE, RECTANGULAR, SAWTOOTH, and TRAPEZOIDAL waveshapes. These waveshapes serve many useful purposes in the electronic circuits you will be studying.

http://www.tpub.com/neets/book9/35.htm

Clapp oscillator

Clapp oscillator

The Clapp oscillator is one of several types of electronic oscillator constructed from a transistor (or vacuum tube) and a positive feedback network, using the combination of an inductance (L) with a capacitor (C) for frequency determination, thus also called LC oscillator.

http://en.wikipedia.org/wiki/Clapp_oscillator

Simple variable frequency oscillator

Simple variable frequency oscillator

This is a very simple circuit utilising a 555 timer IC to generate square wave of frequency that can be adjusted by a potentiometer.

http://www.electronic-circuits-diagrams.com/oscillatorsimages/oscillatorsckt1.shtml

Cheap  Low Power 3V 2Hz Oscillator

Cheap Low Power 3V 2Hz Oscillator

This is yet another method to generate low frequency output pulses. The circuit uses an inexpensive under-voltage monitor IC and a couple of cheap MOSFETs.

http://www.discovercircuits.com/DJ-Circuits/2hzosc.htm

Oscillator Circuit

Oscillator Circuit

Oscillators may be classified by name, such as Armstrong, Hartley, Colpitts, or by the manner in which dc power is applied. An oscillator in which dc power is supplied to the transistor through the tank circuit, or a portion of the tank circuit, is said to be SERIES FED.

http://www.tpub.com/neets/book9/35c.htm

555 IC Oscillator

555 IC Oscillator

http://www.hills2.u-net.com/electron/oscillat.htm#555

Basic RF Oscillator

Basic RF Oscillator

FM Band

http://www.uoguelph.ca/~antoon/circ/rfosc-1.htm

Cheap Low Power 3V 2Hz Oscillator

Cheap Low Power 3V 2Hz Oscillator

It could easily be modified to produce pulse frequencies from about one cycle per minute to a maximum of about 10KHz. It draws only about 1uA from a 3v battery.

http://www.imagineeringezine.com/PDF-FILES/2hzosc.pdf

Crystal oscillator overcomes typical drawbacks

Crystal oscillator overcomes typical drawbacks

drive heavy loads, the duty cycle is adjustable from 25 to 75%; and feedback minimizes the drift

http://www.edn.com/archives/1998/081798/17di.htm

D - FLIP/FLOP Oscillators

D - FLIP/FLOP Oscillators

you can turn flip/flop ICs into low current oscillators. This schematic shows you how.

http://www.imagineeringezine.com/PDF-FILES/dfliposc.pdf


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