This 25 W phase photo control was found in a 1965 General Electric publication. The circuit uses a LASCR which is an unusual SCR photo today.
This circuit was fond in an old publication of the years 1950. The transistors are germanium types and...
In recovering vinyl media with turntables with magnetic capsules the circuit below can be useful. It...
This circuit used in signaling for boats, cars or barriers was found in a 1980s documentation. It still...