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MICROPOWER
C-MOS OSCILLATOR, DRAWS ONLY 0.5uA
If truly low power oscillators interest you, this circuit draws a mere 2 microwatts
(500nA) from a 6v battery. It uses a very inexpensive C-MOS IC to produce a frequency of
2Hz. However, by changing the component values you can push it to 300Hz. The circuit draws
much less current than traditional C-MOS oscillators using a Schmitt trigger inverter. It
also produces fast leading edges. However, if you need more drive current, a C-MOS buffer
should be included.
Published in EDN, September 2, 1993. |
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Click on Drawing Below
to view PDF version of Schematic |
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