Center Tap (CT) Definition Evaluate the statement: “A center tap (CT) is a connection at the midpoint of the secondary winding of a transformer.”

Introduction / Context:
A center tap is common in power supplies and audio circuits. Understanding exactly what and where it is helps when wiring full-wave rectifiers, creating split supplies, or obtaining balanced signals from a single secondary.

Given Data / Assumptions:

• Conventional transformer with a tapped secondary.
• “Midpoint” refers to equal turns on each side of the tap.
• Ideal, symmetrical winding for the definition.

Concept / Approach:

A center tap is a lead brought out from the halfway point of the secondary winding so that the turns are divided into two equal halves. This yields two equal but opposite-polarity voltages with respect to the CT reference, which is often used as a return or midpoint in rectifiers or dual-rail supplies.

Step-by-Step Solution:

Verification / Alternative check:

Check labeling on schematic symbols and transformer datasheets: the CT is identified as the middle lead, often used to create a pair of equal voltages for full-wave rectification.

Why Other Options Are Wrong:

Limiting to step-down or rectifier uses is unnecessary; CTs appear in many designs. Saying it is on the primary is incorrect by definition in this common context (although primary taps for voltage selection exist, a “CT” typically refers to the secondary midpoint in power supplies).

Common Pitfalls:

Confusing CT with multiple independent secondaries or with adjustable taps placed at non-midpoint locations.

Final Answer:

True