Found in the 1991 Electronics Experimenter Handbook magazine, this circuit has good power and is recommended to be triggered by light.
January 2017 - Atmel / Microchip's ATA8520 single-chip card for SIGFOX RF transceivers can be...
I got this circuit from an English magazine from 1977. It can still be easily assembled, as the...
Found in the 2005 Linear Technology Application Manual, this circuit controls the torque of a...