What direction does the current flow? It looks like the current in the tap would have to flow in two directions at once since the tap is both more positive and more negative than either end of the winding at any given moment.
2007-04-02 06:56:30 · 5 answers · asked by Sand M 1 in Science & Mathematics ➔ Engineering
The center tap is usually used with full wave rectifiers. Ground the center tap and connect the positive sides of two diodes to the other legs of the transformer and their anodes (negative terminals) together.. That will be the output. Call one diode the top and one the bottom. During one half of the AC cycle, the top will be more positive than the center tap and that diode will conduct. The other leg will be more negative than the center tap and no current will flow through the bottom diode. When the cycle reverses, the bottom diode conducts (more positive) and you get DC out. With no diodes, the center tap current is zero.
2007-04-02 07:11:05 · answer #1 · answered by Gene 7 · 1⤊ 0⤋
Centre Tapped Transformer
2016-11-01 23:21:20 · answer #2 · answered by ? 4 · 0⤊ 0⤋
It is in the middle of the winding. Put your voltmeter between the bottom end and the center tap and you will read half the voltage you would read if you read from bottom to top. For reference, the power in your house comes from a 220 volt center tapped transformer. Both sides go to the stove which runs on 220. The wall outlets come from one side and the center tap and are 110. The house is "balanced" so that the load is about the same on each side of the transformer.
2007-04-02 07:10:07 · answer #3 · answered by ZORCH 6 · 1⤊ 0⤋
Transformers only work on ac so i don't understand your comment about more positive or negative.
The ac voltage between the center tap and either end tap will be the same and half that of the voltage between the end taps. The phase angles will be opposite.
This type of transformer is used as a cheap way of giving two identical voltage sources from one transformer or sometimes the center tap is grounded (earthed) for safety so that the highest shock you are likely to get is half that of the operating voltage.
2007-04-02 07:40:02 · answer #4 · answered by Poor one 6 · 0⤊ 1⤋
Transformers only pass AC and the center tap normally will supply half of the voltage across the entire winding. AC flows both directions and if u apply DC u can burn up your transformer.
2007-04-02 09:04:19 · answer #5 · answered by JOHNNIE B 7 · 0⤊ 1⤋