Found in the July 1994 Electronics Now magazine, this circuit drives a relay up to 12 V depending on the power supply. The transistor can be general purpose.
This circuit makes use of a Texas Instruments LinMOS operating system and requires the use of a...
The purpose of this circuit found in an old Elektor is to light a lower power lamp when the bigger...
This single transistor radio without a power supply was found in documentation from the 1960s. The...