We found this circuit in a Popular Electronics of the 80s. Used integrated circuits are uncommon today.
Mean Well 480W HVG-480 LED drivers can be purchased from Mouser Electronics. These drivers operate with...
This interesting multivibrator was found in an Italian magazine that no longer exists. This is...
This 1967 Raytheon circuit uses an optical coupler of the era and has a range of 800 to 200 Hz....