This simple source uses two 2N3055 transistors that must be equipped with good heat sinks. The source has no protection, only an input fuse. The diodes are for 5 A x 50 V or more.
This simple rhythmic light circuit uses a 110 V to 220 V transformer and can hold a good number of...
This small transistor radio was published in Radio Electronics magazine in November 1957. The...
This siren has already been presented in similar versions in other articles on the site, some with...