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Using a transformer as voltage regulator
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TechBean
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TechBean
Joined: 12 Aug 2013
Posts: 25
Location: Powder Springs GA
Expertise: I love coffee

Espresso: LSM Practical 95E, Arcelik...
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Roaster: Popcorn popper
Posted Fri Sep 13, 2013, 7:50am
Subject: Re: [SOLVED] Using a transformer as voltage regulator
 

Why would you "need" to buy a transformer to get 220 down to 110?  Unless the 220 is coming in on one only leg and the other is neutral.  The 220 I'm familiar with is 2 110v legs and a neutral (US) red and black usually go to the breaker white and bare go to the common legs in the box.  Go to hardware store buy a 110 v receptacle and your 220v plug.  When you wire it only use 1 leg from your 220. go to one prong of the 110v receptacle, the other prong (receptacle) would go to the common leg on the 220v plug not a prong on the plug.  If I could draw it out here I would. The other prong on the 220v plug would go on unused.  Ive made these at home with great results.  Maybe Ill post some pics when I get home today.
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rsnidjik
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rsnidjik
Joined: 23 Oct 2003
Posts: 74
Location: Dislocated
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Espresso: PID'd Silvia 230v, 110°...
Grinder: Baratza Vario
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Drip: nope
Roaster: West Bend Poppery 1500W; am...
Posted Fri Sep 13, 2013, 7:58am
Subject: Re: [SOLVED] Using a transformer as voltage regulator
 

TechBean Said:

Why would you "need" to buy a transformer to get 220 down to 110?  Unless the 220 is coming in on one only leg and the other is neutral.  The 220 I'm familiar with is 2 110v legs and a neutral |.|   (US) red and black usually go to the breaker white and bare go to the common legs in the box.  Go to hardware store buy a 110 v receptacle and your 220v plug.  When you wire it only use 1 leg from your 220. go to one prong of the 110v receptacle, the other prong (receptacle) would go to the common leg on the 220v plug not a prong on the plug.  If I could draw it out here I would. The other prong on the 220v plug would go on unused.  Ive made these at home with great results.  Maybe Ill post some pics when I get home today.

Posted September 13, 2013 link

I'm now in the U.S., but the Silvia model I have is 220V. So I run it with a step-up transformer.

I had the (less than brilliant, it turns out) idea that maybe I could use this same transformer to regulate the voltage for a 110V roaster, by switching the output of the transformer to 110V. Yeah, I know that would mean 110V in, 110V out, but I was hoping the transformer could produce a steady 110V.

Anyway, I'm eventually going to get a Killawatt meter and maybe a variac at some point so I can actually do what I want to do.
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TechBean
Senior Member
TechBean
Joined: 12 Aug 2013
Posts: 25
Location: Powder Springs GA
Expertise: I love coffee

Espresso: LSM Practical 95E, Arcelik...
Grinder: Mazzer
Vac Pot: Cona
Roaster: Popcorn popper
Posted Fri Sep 13, 2013, 8:04am
Subject: Re: [SOLVED] Using a transformer as voltage regulator
 

Ahh, ok I was thinking you lived in 220 and was buying a 110v roaster.  Also your reply was...super fast..LoL i barely had time to edit post.  Anyway, have fun.  on a side note, your electric stove is 220v. They usually run both even if its gas. You could wire in your silvia to it and no more transformer.
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rsnidjik
Senior Member
rsnidjik
Joined: 23 Oct 2003
Posts: 74
Location: Dislocated
Expertise: I love coffee

Espresso: PID'd Silvia 230v, 110°...
Grinder: Baratza Vario
Vac Pot: nope
Drip: nope
Roaster: West Bend Poppery 1500W; am...
Posted Fri Sep 13, 2013, 8:15am
Subject: Re: [SOLVED] Using a transformer as voltage regulator
 

TechBean Said:

Ahh, ok I was thinking you lived in 220 and was buying a 110v roaster.  Also your reply was...super fast..LoL i barely had time to edit post.  Anyway, have fun.  on a side note, your electric stove is 220v. They usually run both even if its gas. You could wire in your silvia to it and no more transformer.

Posted September 13, 2013 link

Yeah, I thought about that, but logistics won out. There's no room in the kitchen for Silvia, so it (I actually normally say "she") has to sit in a room with 110V only. Not ideal, but workable. If I could just get my wife to sacrifice two of the burners on our four-burner stove, then my problem would be solved. She insists that's not possible. I think her priorities are wrong.


TechBean Said:

Also your reply was...super fast..LoL i barely had time to edit post.

Posted September 13, 2013 link

Hey! This *is* a coffee forum, right? What's the point of drinking coffee if you don't enjoy superhuman reflexes?
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