Sequential Timer with LM3914 (CB24659E)

We found this circuit in the October 1980 issue of Radio Electronics magazine. The circuit uses general-purpose transistors driving a relay.

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Audio Wattmeter (CB17404E)
This circuit is from 2002 documentation. It injects a signal into a power amplifier and measures the...
TTL to TTL Interface or Shield (CB15494E)
In the figure we have a circuit that allows to interface TTL logic with TTL logic, but with total...
256 Sequences Sequential (CB17405E)
We found this circuit in a 2002 documentation. As it uses still common CMOS integrated circuits, it can...