Silicon photo sensors have been in electronic circuits since the inception of the era of silicon electronics. More than likely, scientists quickly discovered the photo-sensing characteristics of ...

The purpose of this circuit is to animate shop-windows by means of a capacitive sensor placed behind a post-card-like banner. The card is placed against the glass inside the shop-window, and the ...

Impact of temperature and process variations on the output voltage variations of CMOS photo sensor is discussed. As temperature becomes high, output voltage (Vout) decreases because of the amplifier ...

Unlike opto-interruption alarms based on light-dependent resistors (LDRs), it does not require an aligned light beam to illuminate the photo-sensor. Light sensitive alarm circuit The circuit is ...

The photo-voltage of a red LED (its bandgap voltage) is typically about 2V. The source impedance of this voltage is about 800MΩ in daylight, rising to infinity in darkness. A TL071 JFET input op amp ...

Two CMOS image sensor circuit prototypes, capable of 4 M-frames/s to 400 M-frames/s and up to 79 dB (13 bits), rms, dynamic range have been fabricated and tested. These developments are intended for ...