This circuit was found in a Popular Electronics from the 90s. The effect circuit uses components that are still common today. In fact, the circuit has only 3 channels of 12 LEDs.
This triac circuit was found in the July 1995 Electronics Now magazine. The triac is based on the...
We found this circuit in a 90s Electronic Design. The circuit is based on a quadruple operational...
The transistor may be any general purpose, but the integrated transistor is not common today....