This circuit from a June 1957 Radio Electgronics is for oscilloscopes of the time with a maximum frequency of a few megahertz. The circuit is battery powered.
This 15 V regulator uses the integrated 100 mA L series. The circuit was suggested by Motorola's Linear...
This 1992 circuit operates in the range of cordless phones used at the time. The circuit is based...
We find this circuit in the manual of the used integrated circuits. The manual is from Linear...