Triangle wave generator uses the luminous flux to change the frequency

Published:2011/8/28 20:03:00 Author:TaoXi | Keyword: Triangle wave, generator, luminous flux, frequency | From:SeekIC

Triangle wave generator which uses the luminous flux to change the frequency is as shown in the figure. A part of the timing resistor of the function generator uses the photoconductive resistance RG to change the frequency through the luminous flux. The complementary re-flip flop which is composed of VT1 and VT2 inspires the RG. The resistance attenuator is composed of the R1, R2 and R3 that can be used to improve the input impedance of μPC55A, and it makes the frequency extend upward. The RP2 can be used to adjust the symmetrical characteristic of the output amplitude.



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