Using the M1575 this switching converter was found in National Semiconductor documentation from the 90s. The circuit has a maximum output current of 1 A.
We found this zener regulator in a 1978 radio amateur documentation. The operational can be...
This sensitive circuit was found in old documentation. The SCR can be any of the 106 series and...
This simple receiver was found in a book on transistors from 1954. The coil determines the...