| 21. | What year were Zener cards invented?
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| 22. | The constant Zener voltage is applied across the base of Q1 and emitter resistor, R2.
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| 23. | This method is most effective for Zener diodes rated at 5.6 V or more.
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| 24. | Zener zap is frequently employed in mixed-signal circuits for trimming values of analog components.
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| 25. | The zener acts as a voltage regulator stabilising the reference voltage against supply and load variations.
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| 26. | The main thrust of Zener's work over the next ten years concerned ESP tests.
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| 27. | Zener's later work focused on theories of perception and the analysis of perceptual experience.
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| 28. | In the first arm a Zener diode clips out the signal in excess of 1 volt.
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| 29. | One commonly used algorithm that is appropriate for calibrations of Zener reference standards is described here.
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| 30. | Zener diodes in this configuration are often used as stable references for more advanced voltage regulator circuits.
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