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 circuit can be used in instrumentation to obtain a very high input impedance for measurement of...
This circuit was found in a 1967 General Electric documentation. The circuit generates signals...
This variable frequency oscillator with the 4093 was found in a Popular Electronics from the 90s....