AC Switch with Triac (CB25855E)

The load controlled by this circuit depends on the triac used. The circuit is from Electronics Now magazine from June 1995.

Versatile Astable Multivibrator (CB25329E)
This circuit, which can be built with several CMOS gates, was found in the March 1996 issue of...
Simple MW Radio (CB4359E)
Originally, this circuit is from an English magazine, but I found it in Argentina's Radio Chassis...
3 to 300 Wattmeter and detector (CB3924E)
This circuit can be used with transmitters in the 3 to 30 MHz frequency range also functioning as a...