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Need explain of AC-DC transformer Answered

Hello , i need some axplain about this AC-DC transformer schematic .What does the diode and resistor in series do in this schematic ? Can i use a KBP206 to replace the 4 diodes(bridge) ?
Thanks for advance!

http://i247.photobucket.com/albums/gg132/chipmapple/img417.jpg

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user
icengBest Answer (author)2012-04-03

First transformers are AC only..

The Resistor limits the led current to about 10 ma.

Without any resistor the led current would be 10 Amperes or more,
resulting in a very bright very short color changing light flash as the
led destroyed itself....

A

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user
login721 (author)iceng2012-04-03

Thanks. i mean AC to DC transformer.
But in schematic , the diode is 1n4001, not the led , that make confused, why they put it here ??

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user
iceng (author)login7212012-04-03

The 1N4001 are the four 1Amp 50 PRV diodes.
The red  is not a 1N4001 but is meant to be the LED.

The DC bridge that changes AC to DC see the pic.

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lemonie (author)2012-04-04

Right of your diodes you've got a DC voltage regulator, and  to the left a transformer.
What is a KBP206?

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