Anchor locator (CB7884E)

This 600 kHz circuit is designed to locate a lost boat anchor. The circuit has a range of up to 10 meters. The transistor admits equivalent.

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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...
Thermocouple Amplifier (CB17615E)
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...