Audio Light Modulator diagram
Saturday, April 30, 2011
Audio Light Modulator diagram
Audio light modulations add to the enjoyment of music in the course of functions organised at property or outdoors. Presented here is one such easy circuit in which light is modulated using a little 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 utilised in transistor radios) via a non-polarised capacitor. The use of transformer is vital for isolating the audio source from the circuit inside the sensitivity control potentiometer VR1 supplied within the input to transistor T1 might be adjusted to guarantee that conduction takes location only after the AF exceeds specific amplitude. This control has to be adjusted as per audio source level. The audio signal Proper earthing of the circuit is fairly crucial. The diode bridge provides pulsating DC output and acts as a guard circuit between the mains input and pulsating DC output. Extreme care is essential to stay away from any electric shock
