This electronic Morse key was found in a Popular Electronics from the 90's. The components are common, but there is a mechanical part that requires assembly skills.
This Linear Technology circuit charges a battery from the energy produced by a wind generator that can...
This circuit, found on Motorola's Linear Interface ICs uses the MC1536 as a driver for a 36 W or...
Found in an old publication, this circuit uses an analog milliammeter to indicate the position of a...