Found elsewhere in this section, but from other sources, this circuit is from a 1964 Electronic Design. The transistor is from the era and the power voltage depends on this component.
This circuit was obtained in a Hands-On Electronics from the 90's. The circuit turns on one LED at...
This 12 dB per octave filter was found in a 1977 digital audio publication. The circuit requires a...
Originally in the 1992 publication, this amplifier was recommended for use with record players....