AUDIBLE LIGHT SENSOR


Posted on Feb 6, 2014

741 opamp is connected as audio oscillator with Radio Shack 276-677 photocells in feedback circuits. When light strikes PC1, its resistance decreases and frequency of audio tone in headphone decreases correspondingly. When light strikes PC2, which is connected to noninverting input of 741, increase in illumination serves to increase frequency. Cho


AUDIBLE LIGHT SENSOR
Click here to download the full size of the above Circuit.

ose R4 to reduce volume to desired level. R3 is balancing control for photocells. -F. M. Mims, "Integrated Circuit Projects, Vol. 2, " Radio Shack, Fort Worth, TX, 1977, 2nd Ed. , p 81-86.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Two way Loudspeaker cross-over
    Remote-sensor-loop-transmitter
    Radio Frequency Circuits
    jet engine sound generator
    diy ambient orb with arduino update <77> comment page 3
    Hv739 Ultrasound Pulser Demo Board
    Protection For Telephone Line
    0-30 VDC Stabilized Power Supply with Current Control 0.002-3 A
    Accurate Bass Tone Control
    USB RGB LED VU Meter
    Multiplicative -DA converter electronic attenuator
    555 high performance photovoltaic street a control circuit diagram
    A simple remote control switch circuit



    Top