This circuit from a 1968 Motorola documentation provides a 120 AC output with 60 Hz from a 48 V DC input. The circuit uses transformers and coils of commercial types of the time.
This circuit is from a current regulator up to 1 A, ie a constant current source. The LM320...
This circuit is from a 1995 publication. The components are all common and the number of LEDs may...
This 1970 General Electric circuit is an equivalent configuration to the previous one with PNP...