Using SCRs, this circuit from a 1967 General Electric manual allows full wave load control with SCRs. SCRs can be modern types depending on the load.
For a negative voltage of -48 V, this circuit from the 2005 Linear Technology manual makes use of an...
Found in a 1980s telecommunications documentation, this balanced modulator circuit uses...
This circuit is from a 2005 Linear Technology publication. It converts current into load sensing...