Alpha and Theta waves modulator (CB26155E)

This circuit, which presents a certain danger and should be used with caution, was found in the Electronics Experimenter Handbook magazine.

| Clique na imagem para ampliar |

Light beam modulator (CB8027E)
This circuit is from General Electric documentation from 1970. The transistors can be of...
Decade Resistors (CB25240E)
This sophisticated decade of benchtop resistors was found in the November 1989 issue of Radio...
Full wave SCR dimmer (CB7201E)
Found in a 1967 RCA manual, this circuit uses components from the era that can be replaced by modern...