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 telephone circuit was found on a 90's EDN. It keeps a flashing LED to indicate that there was a...
This circuit is from an Electronic Design from the 90's. The main integrated circuit is uncommon...
I found this circuit in a 1992 Electronics Experimenter Handbook. The circuit can be easily...