Light To Frequency Converter With 555
The series converter of light into frekuency “Light To Frequency Converter” follows in the wake using the NE555 timer IC. The concept of light to frequency converter in this circuit is to change the current charging capacitor tank circuit in astable mutivibrator 555. Light sensor used is a photo diode. Output frequency range of light to frequency converter is determined by the capacitance value capacitor C1 and intensity of light received by photo diode D1. The series of “Light To Frequency Converter” can be seen in the figure below.
The series of Light To Frequency Converter 555
Light To Frequency Converter circuit 555 will output pulses with a frequency that is proportional to the intensity of light received by photo diode. Output frequency range of light to frequency converter circuit above is 1 KHz to 24 KHz. If you want to get another range of frequencies that can be done by replacing the capacitor C1 value with another value. Light To Frequency Converter circuit 555 is very simple, hopefully can help and become imagination in making light of the other converter.