Negative resistance LED oscillation circuit

Published:2011/4/10 22:38:00 Author:Nicole | Keyword: negative resistance, LED, oscillation | From:SeekIC

This circuit can cover 3.2~8.0 kHz frequency range. It can inspire the loudspeaker which is connected on X point. In oder to obtain lower frequency and large sound, it should change C1 into 1μF. The negative resistance part of this circuit consists of Q1, Q2, LED, R2 and R3. Optical isolator device is MCF-2 or equivalent component.



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