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Home › Magazines › 2002 › December › Switchable Current Source

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Switchable Current Source

Published in issue 316, December 2002

The circuit diagram shows a simple current source constructed from discrete components, which can deliver a constant current into a load connected to ground. The circuit can be switched on and off using transistor T2.Optimum temperature compensation can be achieved by using a BC857S dual PNP transistor with the left-hand half connected as a diode.

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Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

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