Found in an American publication from 1947, this 4-tube amplifier has excellent sound quality. Its source makes use of a transformer.
This circuit is recommended by Texas Instruments in the datasheet of the TL317, equivalent to...
November 2016 - Texas Instruments' new TLV8802 nano-power operational amplifiers for wireless...
The basic configuration for a 4017 when used as a decade divider with one-of-ten decoded outputs...