Sequential LED (CB7860E)

The UAA170 integrated circuit is not very common today. This project is for a 303 Circuits from the 90s. The power supply is 12 V.

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Wavemeter (CB15830E)
We found this circuit in an old documentation from the 70s. The text is the original one of the...
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The circuit shown in figure is suggested by Maxim in an application note. The operational...
10 W-Transistor Amplifier II (CB998E)
We found this amplifier in a 1990 documentation. The transistors are common, having been made...