This circuit was suggested by Motorola in a 1969 publication. It makes use of components of the time, but both the FET and the bipolar may be general purpose current types.
This charger makes use of the LTC4026. We found it in a 2005 Linear Technology publication. The circuit...
This circuit for the logic control of the 555 in a power supply was found in the October 1989...
This small power amplifier makes use of an output transformer given its design time. In fact, the...