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.
This circuit is designed to activate an automotive alarm after 8 minutes of activation. Of course...
This is one of the channels of an amplifier suggested by Westinghouse in 1970s documentation. The circuit...
This astable multivibrator, well known to all, was found in the Raytheon transistor application manual of...