Industrial electronics
Speedrun
Single-Phase Inverters in 30 Seconds
Single-phase inverters in 30 seconds. Go.
Quick check · tap an answer to continue
Lesson notes
Key points
- Job: DC to AC: An inverter turns DC supply into alternating output voltage.
- Full bridge: four switches: An H-bridge uses four switches in two legs.
- Diagonal pairs conduct: Diagonal switch pairs alternate, reversing voltage across the load.
- Half bridge: half voltage: A half bridge gives only plus or minus half the DC voltage.
- Feedback diodes: Antiparallel diodes return inductive load current to the supply.
- PWM shapes a sine: Sinusoidal PWM plus filtering cuts low-order harmonics.
Takeaway: Full bridge gives ±Vdc; half bridge gives ±Vdc/2.
Quick check: What peak output voltage does a half-bridge inverter give from Vdc?
- Vdc/2
- Vdc
- 2Vdc
The load sits between a leg midpoint and a split capacitor midpoint.
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