This series LED circuit was found in the February 1992 issue of Radio Electronics magazine. The effect's speed is dependent on C1 and adjusted by R3.
This amplifier has a few Watt output, using old transistors. The speaker is 45 ohms, but with...
This oscillator found in Electronics Now of the 90s is of the Normally-Off type, being triggered...
This 1980s circuit uses components of the era that can be replaced by modern equivalents. For the FET we can...