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@ericfont

ericfont/circuit-20251121-1648.svg

Created November 21, 2025 21:47
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try using 1MHz opamp pole to stabilize oscillation frequency
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ericfont commented Nov 21, 2025

sim, oscillate 116kHz

image

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ericfont commented Nov 21, 2025

adjust lowpass filter to be fc=20kHz, so oscillates around 140kHz

image image

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ericfont commented Nov 21, 2025

should work for opamps with about 1MHz GBWP.

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ericfont commented Nov 21, 2025

oscillate around 99KHz

image

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