This full-wave dimmer with SCRs was found in General Electric documentation from 1965. The circuit uses a unijunction and serves only for incandescent lamps.
This circuit was found in a 1967 Japanese documentation. It consists of a touch control system with...
This amplifier with complementary symmetry output and good sound quality was found in...
The commercial MT2B receiver manufactured in Japan in the 1960s had a listening device only and...