•  
  •  

Audio Light Modulator

Audio light modulations add to the enjoyment of music during functions organised at home or outdoors. Presented here is one such simple circuit in which light is modulated using a small fraction of the audio output from the speaker terminals of the audio amplifier. The output from the speaker terminals of audio amplifier is connected to a transformer (output transformer used in transistor radios) through a non-polarised capacitor. The use of transformer is essential for isolating the audio source from the circuit in The sensitivity control potentiometer VR1 provided in the input to transistor T1 may be adjusted to ensure that conduction takes place only after the AF exceeds certain amplitude. This control has to be adjusted as per audio source level. The audio signal Proper earthing of the circuit is quite essential. The diode bridge provides pulsating DC output and acts as a guard circuit between the mains input and pulsating DC output. Extreme care is necessary to avoid any electric shock

If there are any problems please contact webmaster@electronic-circuits-diagrams.com

Please share & like

For Signal Generator Signal Power Amplifier Module FPA2000-30w 100khz DC12V
$90.0 For Signal Generator Signal Power Amplifier Module FPA2000-30w 100khz DC12V picture
MINI CIRCUITS ZHL-2 Power Amplifier  Wideband 10 to 1000 MHz
$120.0 MINI CIRCUITS  ZHL-2  Power Amplifier  Wideband 10 to 1000 MHz  picture
MINI CIRCUITS ZHL-1A-BNC 2-500Mhz 24.5V +28db min gain Medium Power Amplifier
$109.99 MINI CIRCUITS ZHL-1A-BNC   2-500Mhz 24.5V +28db min gain Medium Power Amplifier  picture
SIEMENS ZAC-40 500-035400 ZONE AMPLIFIER 40 W FIRE ALARM
$200.0 SIEMENS ZAC-40 500-035400 ZONE AMPLIFIER 40 W FIRE ALARM picture
MITSUBISHI MR-C10A1-UE (LC1A18) AC MOTOR SERVO DRIVE CONTROLLER AMPLIFIER. NEW
$198.0 MITSUBISHI MR-C10A1-UE (LC1A18) AC MOTOR SERVO DRIVE CONTROLLER AMPLIFIER. NEW picture