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 may be modulated by a very low frequency signal, for example to obtain the vibrato...
This “people detector” with pyroelectric sensor was found in the April 1991 issue of Radio...
Using a BA1404 integrated circuit this small FM stereo transmitter was found in a Radio...