Found in an ancient American documentation, this circuit can generate signals up to 40 MHz for a Z80, microcontroller widely used at the time. The circuit must be powered with 5 V and also serves as a shield.
LTC7841 PolyPhase® Synchronized Boost Controllers Mouser Announces Analog Devices LTC7841...
Found in a Popular Electronics from 1992, this circuit uses a PLL567 in an audio meter bridge that...
This simple musical instrument was obtained from a 1967 magazine. If the original transistors are...