Suggested by Linear Technology in documentation from the 90s, this circuit uses a company component available at the time. See if there are current equivalents.
Found in National Semiconductor documentation from the 1990s, this circuit employs basic...
This circuit was obtained in a 1965 American magazine translation. The photocell can be the type...
This circuit indicates the current of a motor or other load. Resistor R has values between 470 ohm...