LED regulator circuit?

[caution]

I'm curious what others have used to stabilize their LED installations so that they don't dim every time a heavy bass beat hits.

The old bulb in my Conion came off a separate transformer winding, so it didn't suffer from this.

I'm thinking I could use a VU meter driver chip or something similar, and just wire it to be on all the time. I'm not sure a voltage regulator would work.

Maybe create a rectifier for the 7 VAC it used to use?

 

[wolff3012]

this are just some transistors wich are settet with a fix voltage or current. (i dont know the rigt names...)
But you can use usb-charger for a car. Outpultvoltage is 5 volts. Two led's uses ca. 2,2 volts, in serie 4,4 volts. With the current from these LED's (~20 mA) you can calculate the resistor. (this is olny for DC current).
Let me know if it helps a bit, my english isn't the best....(-:

(a bulb runs with AC or DC current, a LED not)