Electrical Engineering › Section K · Methods of analysis and theorems (ac) › Topic K.2
Bridge networks and delta-Y conversions (ac)
A bridge compares an unknown impedance with known ones and detects the moment they match as a null, which makes it one of the most precise ways to measure inductance and capacitance. Delta-Y conversions then handle the bridges, and other awkward networks, that never balance.
In this topic
- Measuring by balancing
- The ac balance condition
- Two conditions at once
- The Maxwell bridge
- Worked example: a Maxwell bridge
- The Hay bridge
- The capacitance comparison bridge
- Delta-Y conversions with impedances
- Worked example: an unbalanced bridge
- Balanced deltas and Ys
- Common mistakes to avoid
- Key takeaways
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