When high voltage is applied to the Selected PFN, what happens?

When high voltage is applied to the Selected PFN, what happens?

• A. The high voltage charges it to almost double (1.8x) the voltage applied.
• B. It reduces voltage
• C. It does not affect the voltage
• D. It trips the power supply

Answer: (A)

A pulse forming network stores energy and, when charged, ends up holding a voltage higher than the charger because of how its sections stack voltage as energy is built up. The PFN is made of a ladder of capacitors and transmission‑line segments that, from the charging source’s perspective, accumulate voltage across many stages. When it’s fully charged, that stored energy is ready to be released as a sharp, high‑voltage pulse, and the network’s design causes the stored voltage to be about 1.8 times the voltage that was applied by the high‑voltage supply. So the PFN doesn’t just hold the same voltage or drop it; it effectively boosts the stored voltage to produce a strong, fast pulse when the switch fires. The other possibilities don’t fit the function of a PFN, which is to store energy and deliver a high-voltage pulse, not to reduce voltage, keep it unchanged, or trip the supply during charging.

A pulse forming network stores energy and, when charged, ends up holding a voltage higher than the charger because of how its sections stack voltage as energy is built up. The PFN is made of a ladder of capacitors and transmission‑line segments that, from the charging source’s perspective, accumulate voltage across many stages. When it’s fully charged, that stored energy is ready to be released as a sharp, high‑voltage pulse, and the network’s design causes the stored voltage to be about 1.8 times the voltage that was applied by the high‑voltage supply. So the PFN doesn’t just hold the same voltage or drop it; it effectively boosts the stored voltage to produce a strong, fast pulse when the switch fires. The other possibilities don’t fit the function of a PFN, which is to store energy and deliver a high-voltage pulse, not to reduce voltage, keep it unchanged, or trip the supply during charging.