Zener Diode Clamping. A varying analog signal can be constrained to a fairly narrow range of voltages with a single zener diode. Zeners act like normal diodes with reverse polarity applied so the first figure is identical to a pair of conventional diodes.
An alternative clamping circuit is shown in figure 6 depending on the voltage and current rating of the circuit. This flow of current in the opposite direction happens only when the voltage across the terminals exceed the threshold voltage called the. A zener diode can be applied to a circuit with a resistor to act as a voltage shifter.
Zeners act like normal diodes with reverse polarity applied so the first figure is identical to a pair of conventional diodes.
The capacitor c is a reservoir capacitor and charges to a substantially constant voltage while the resistor r is sized to dissipate. This circuit lowers the output voltage by a quantity that is equal to the zener diode s breakdown voltage. Zeners act like normal diodes with reverse polarity applied so the first figure is identical to a pair of conventional diodes. The capacitor c is a reservoir capacitor and charges to a substantially constant voltage while the resistor r is sized to dissipate.
