We found this circuit in a 1962 publication by General Electric. The circuit applies to common fluorescents in the 117 V power grid but can be changed to other grid voltages.
The XR220 is a circuit equivalent to the 555 of the 1970s. This configuration from Radio...
Found in an English publication from the 1960s, this circuit uses period components, including the...
This circuit was found in Linear Circuits Applications of Texas Instruments, originally using the...