The phasor is the ray weapon that we see in many science-fiction films. The characteristic sound can be imitated with this circuit found in Radio Electronics of the years 90.
This simple expandable circuit was obtained from a Popular Electronics from the 80's. The supply...
The frequency of the LC resonant circuit must be the same as that of the crystal and the JFET...
This circuit was obtained in a Popular Electronics of 1991. The magazine no longer exists, but the...