This battery circuit provides a charging current of 500 mA depending on the solar panel. The switching circuit is from a National Semiconductor documentation from the 90s.
This narrowband data receiver is from the Philips Databook of 1990. The circuit is powered by 5 V...
This circuit powers a small 5 W lamp that goes out when power is lost. The circuit can use the...
This configuration found in other companies' manuals is from Motorola's 1993 Linear Interface ICs....