•  
  •  

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

CL01-12 Microwave Oven High Voltage Diode Rectifier 1 Pack
$11.99 CL01-12 Microwave Oven High Voltage Diode Rectifier 1 Pack picture
Single Phase Diode Bridge Rectifier 25A 1000V KBPC2510 New
$8.99 Single Phase Diode Bridge Rectifier 25A 1000V KBPC2510 New picture
NTE Electronics NTE53016 Silicon Bridge Rectifier, Full Wave, Single Phase, Low
$11.99 NTE Electronics NTE53016 Silicon Bridge Rectifier, Full Wave, Single Phase, Low picture
Rofu 1005 Full Wave Bridge Rectifier, 8 to 24V AC, 5A, 3/4" x 25/64" x 3/16"
$21.99 Rofu 1005 Full Wave Bridge Rectifier, 8 to 24V AC, 5A, 3/4
ABB 3HAC14549-2 IRC5 Robot Rectifier R2
$1738.9 ABB 3HAC14549-2 IRC5 Robot Rectifier R2 picture