By connecting this circuit in parallel with the speaker of a sound system, the LED will blink to the rhythm of the music played.
The device can be used with amplifiers up to 50 W and the resistor connected in series with the transformer will depend on the power according to the table given with the assembly.
In figure 1 we have the diagram of the apparatus.
Assembly can be done on a small terminal strip, as shown in figure 2.
The transformer may be of the primary type of 110 V and secondary of 6 V to 12 V with a current of 250 to 500 mA.
Instead of the diode we can also use a second LED connected in the same position in parallel.
Material list
LED - common LED of any color
D1 - 1N4148 - general purpose diode
R - resistor - see table
R1 - 1k ohms x 1/8 W - resistor - brown, black, red
T1 - Transformer - see text
Several:
Terminal bridge, wires, solder, etc.
