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Circuits designed by David Johnson, P.E.
Last Updated on:
Monday, December 25, 2017 02:05 PM
List of Dave's Circuit Designs
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More
Astable Oscillators
Circuits
Square Wave Oscillators |
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MICROPOWER C-MOS
OSCILLATOR, DRAWS ONLY 0.5uA
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| 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, Sept 2, 1993. |
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Click
on Drawing Below to view PDF version of Schematic |
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