© QuartSLab 2009

Quartz Crystals

Square-Wave Oscillator

This is a simple multivibrator oscillator:

0.7 x R1 x C1 = one half-cycle period time and
0.7 x R2 x C2 = the other half.

Typical values for 1KHz:

Component

Value

Component

Value

R1

100K

R2

100K

R3

4K7

C1

33n

C2

33n

+ve

10v

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