Audio Oscillator (T435E)

Found in Popular Electronics from June 1957, this oscillator employs a dual tube providing output to drive a loudspeaker with good power.

Control for miniature railways (CB7079E)
Found in an American publication from 1968, this circuit can be made based on a TIP42 that must be...
Temperature to Frequency Converter (CB4905E)
This circuit was found in an application note of the Linear Technology LTC1145. The circuit can be used...
TPS54824 Synchronized Step Down SWIFT Converter
Mouser Electronics is stocked with Texas Instruments SWIFT Step Down TPS54824 Synchronized Power...