Simple Receiver (T1345E)

This personal tube receiver was found in a February 1949 Radio Electronics magazine. The band is medium wave, and the tube has a 117V filament.

Direct H Bridge Current Monitor (CB5401E)
This circuit was found in a 2005 Linear Technology application manual. The circuit monitors the...
Regulator with logic drive (CB7970E)
This circuit, which can act as a shield, was found in a 90’s Radio Electronics. It enables a power supply...
Symmetrical 15 V power supply (CB8498E)
Found in na 1970 EDN this circuit has a parallel regulation providing a symmetrical output of 15 V....