NEGATlVE_RESISTANCE_LED_OSCILLATOR

Published:2009/7/5 23:04:00 Author:May | From:SeekIC

Covers frequency range of about 3.2-8 kHz with values shown. WilI drive Ioudspeaker inserted at point X. For lower frequency (range of 120-1800 Hz) and Iouder sound, change C1 to 1 μF.Negative-resistance portion of circuit indudes Q1, Q2, LED, R2, and R3. Optoisolator can be MCT-2 or equivalent.-F. M, Mims, Electronic Circuitbook 5: LED Projects, Howard W. Sams, Indianapolis, IN, 1976, p 26-29.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Signal_Processing/Oscillator_Circuit/NEGATlVE_RESISTANCE_LED_OSCILLATOR.html

Print this Page | Comments | Reading(3)