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 JFET amplifier was found in documentation from 1958. The circuit has voltage gain of 4 and 10...
This circuit was found in a 1969 Mullard documentation. Used transistors can be replaced with...
In the figure we have a high input impedance stage with a general purpose PNP transistor. An NPN transistor...