•  
  •  

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

Becker vacuum pump VT 4.25
$900.0 Becker vacuum pump VT 4.25 picture
Okano Works Pirani Vacuum Pressure Sensor PSG-18 #1-Mint-with 15 Day ROR
$133.0 Okano Works Pirani Vacuum Pressure Sensor PSG-18 #1-Mint-with 15 Day ROR picture
Vacuum Pump-Marvac Excellent Scientific Co #2 RR1-9
$59.95 Vacuum Pump-Marvac Excellent Scientific Co #2 RR1-9 picture
Scientific Sealing Technology 1200/SST1200 Vacuum Sealing Furnace-Reflow Station
$29850.0 Scientific Sealing Technology 1200/SST1200 Vacuum Sealing Furnace-Reflow Station picture
JB Industries Bottle of Black Gold Vacuum Pump Oil , 1 quart
$13.91 JB Industries Bottle of Black Gold Vacuum Pump Oil , 1 quart picture