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Basic Electrical Training 3

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Mit welchem Pin ist die on-Board LED typischerweise auf dem Arduino Nano verbunden?  / Which pin is the on-board LED typically connected to on the Arduino Nano? 

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Ein analoger Eingang misst eine Spannung von 2.2 V, und der ADC liefert den Wert 450. Welche Referenzspannung wird vom Arduino verwendet? / An analogue input measures a voltage of 2.2 V, and the ADC delivers the value 450. Which reference voltage is used by the Arduino?

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Was bewirkt digitalWrite(LED_BUILTIN, HIGH);? / What does digitalWrite(LED_BUILTIN, HIGH); do?

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Ein PWM-Signal hat eine Periodendauer von 20 ms und einen Duty Cycle von 25 %. Wie lange dauert der High-Pegel in Millisekunden? / A PWM signal has a period duration of 20 ms and a duty cycle of 25 %. How long does the high level last in milliseconds?

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Berechnen Sie die erwartete Frequenz f für die ursprüngliche Schaltungskonfiguration mit R_A=1kΩ, R_B=47kΩ und C=330nF. Gegen Sie die Frequen in Hz an./ Calculate the expected frequency f  for the initial circuit configuration with R_A=1kΩ, R_B=47kΩ, and C=330nF.  Give the frequency in Hz.

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Wenn Sie einen externen Spannungsteiler an den Steuerspannungs-Pin anschließen, welche Auswirkung hat dies auf die Schaltung? / If you connect an external voltage divider to the control voltage pin, what effect does this have on the circuit?

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Was geschieht, wenn R_B aus dem Versuch deutlich verringert wird, während R_A und C konstant bleiben? / What happens when RB in the lab is reduced significantly while keeping RA​ and C constant?

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Welche Aufgabe hat der Steuerspannungs-Pin (Pin 5) in einer NE555-Schaltung? / What is the role of the control voltage pin (Pin 5) in an NE555 circuit?

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Welche Funktion hat der IC NE555 im astabilen Modus ? / What is the function of the NE555 timer in astable mode?

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Welche Komponenten bestimmen in erster Linie die Schwingungsfrequenz in einer astabilen Schaltung NE555? / Which components primarily determine the frequency of oscillation in an NE555 astable circuit?

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