Obtained from an English publication in the 1980s, when a weather station operated in that country at 60 kHz, this circuit employed only two general-purpose transistors.
This circuit is asymmetric with the mark-space relationship determined by R1 and R2. The diode can be a...
This basic Schmitt trigger was found in an American publication from 1968. The circuit uses...
This circuit is from a 1967 publication and applies to incandescent lamps up to 600 W. Triacs must be...