Unit Gain Stage (CB6157E)

This high impedance step suggested by an English publication can operate up to 1 MHz with 1 V rms output. Input impedance is 1 M ohm.

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The circuit shown is from an old European publication. In it we have the way to activate a relay...
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We found this circuit in a European publication from the 1990s. Transistors are still common types...
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