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By UNTEngineer
#149213
Can anyone suggest a method to step down 16VAC to 5VDC? I'd prefer not to have a large transformer if I have to use one. Is there a rectifier that can do the job?
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By leon_heller
#149214
Rectify it and use a regulator.
By UNTEngineer
#149215
leon_heller wrote:Rectify it and use a regulator.
Got a suggestion for a Rectifier you would use?
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By leon_heller
#149219
It depends on the current.
By electronicsbasecom
#149223
leon_heller wrote:It depends on the current.
LM2576 for 3A
or LM2575 for 1A
By UNTEngineer
#149227
electronicsbasecom wrote:
leon_heller wrote:It depends on the current.
LM2576 for 3A
or LM2575 for 1A
Thanks.
By UNTEngineer
#149230
rmteo1 wrote:Note that the LM2575/6 are DC/DC regulators - they are NOT rectifiers. What you want to convert AC to DC is a bridge rectifier (of the appropriate current rating) such as this http://www.digikey.com/product-detail/e ... ND/2153134
Well I think I found what I needed.

http://www.mikroe.com/add-on-boards/pow ... -3-3v-reg/
By MichaelN
#149234
If you're drawing more than a couple of hundred milliamps, I recommend you look at using a switching regulator to reduce the power dissipation in the regulator.
By UNTEngineer
#149235
MichaelN wrote:If you're drawing more than a couple of hundred milliamps, I recommend you look at using a switching regulator to reduce the power dissipation in the regulator.
Thanks for the suggestion. I'll look into that.
By MichaelN
#149240
MichaelN wrote:If you're drawing more than a couple of hundred milliamps, I recommend you look at using a switching regulator to reduce the power dissipation in the regulator.
Something like the R-78E5.0-0.5 would probably do the trick, and you don't have to figure out the inductors / capacitors etc http://www.digikey.com/product-search/e ... 78E5.0-0.5