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12V AC Power Needed

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mtlatc
(@mtlatc)
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Joined: 2 years ago
Posts: 26
Topic starter  

I need 12V of AC power. What’s the best way to get there. I’m in North America so I’m on 110V. 


   
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robotBuilder
(@robotbuilder)
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Joined: 5 years ago
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@mtlatc

You don't mention the current it has to deliver?

Although most plug into a mains socket adapters convert the mains voltage to some regulated dc value to charge a battery I have bought ones that output an ac voltage without converting it to dc voltage. An electronics outlet might have something to suit.

A basic conversion is a simple transformer that can handle the current required.  It is safer to have the transformer in a plastic plug in a mains module that cannot be opened so there is no contact with the mains voltage by the user.

 


   
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Ron
 Ron
(@zander)
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@mtlatc I just did a google and found these https://amz.run/6m1R https://amz.run/6m1S lot's more.

First computer 1959. Retired from my own computer company 2004.
Hardware - Expert in 1401, and 360, fairly knowledge in PC plus numerous MPU's and MCU's
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My personal scorecard is now 1 PC hardware fix (circa 1982), 1 open source fix (at age 82), and 2 zero day bugs in a major OS.


   
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 RCC1
(@rcc1)
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Most wired garden lights were 12AC (That was before the solar lights became popular).   I think you can still purchase those transformers in the big box stores. 

RCC1


   
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mtlatc
(@mtlatc)
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Joined: 2 years ago
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Topic starter  

@robotbuilder I only need .8A

@zander I was hoping for something a bit cheaper. It only cost me about $4 to build the circuit. I did see some others on Jameco but they were still in in $15 range.

@rcc1 I’ll take a look, thanks.

 


   
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Ron
 Ron
(@zander)
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Joined: 4 years ago
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@mtlatc I hear you, but the problem is because it's AC it will likely involve a transformer and that means some amount of copper wire. As you may know, criminals are ripping the copper wire out of unoccupied houses etc due to the high cost of copper now. What I would do is find a part you favour then source it on AliExpress. That will often be much less expensive.

First computer 1959. Retired from my own computer company 2004.
Hardware - Expert in 1401, and 360, fairly knowledge in PC plus numerous MPU's and MCU's
Major Languages - Machine language, 360 Macro Assembler, Intel Assembler, PL/I and PL1, Pascal, Basic, C plus numerous job control and scripting languages.
My personal scorecard is now 1 PC hardware fix (circa 1982), 1 open source fix (at age 82), and 2 zero day bugs in a major OS.


   
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Inst-Tech
(@inst-tech)
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Joined: 3 years ago
Posts: 554
 

Posted by: @mtlatc

@robotbuilder I only need .8A

@zander I was hoping for something a bit cheaper. It only cost me about $4 to build the circuit. I did see some others on Jameco but they were still in in $15 range.

@rcc1 I’ll take a look, thanks.

 

@mtlatc, Try looking at this link: "https://www.amazon.com/AGPTEK-Converter-Transformer-Waterproof-Spotlights/dp/B00WUARESY/ref=sr_1_27?crid=3UT8ILDNEQ80V&keywords=120vac+to+12vac+transformer&qid=1686533297&sprefix=120Vac+to+12Vac%2Caps%2C750&sr=8-27"

it for a 120 vac to 12 vac 2.1A ( 24 watts) for around $30 US.  This is probably or this one that is just a power transformer 120VAC to 12VAC , 10VA, 1000mA, or about 12 watts fo about $16 US link: "https://www.amazon.com/XZGm-Transformer-Motor%EF%BC%8CAddress-Light%EF%BC%8CFountain%EF%BC%8CFurnace%EF%BC%8CDewalt-Radio%EF%BC%8CSpeaker/dp/B0B9S1PYWT/ref=sr_1_32?crid=3UT8ILDNEQ80V&keywords=120vac+to+12vac+transformer&qid=1686533297&sprefix=120Vac+to+12Vac%2Caps%2C750&sr=8-32"

regards,

LouisR

 

LouisR


   
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