View single post by Kent K
 Posted: Sat Jan 17th, 2015 06:09 am
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Kent K

Joined: Sun Nov 9th, 2014
Location: Kansas City, Missouri USA
Posts: 55

I looked at data sheets for a sub $5 unit, which I found on eBay, imported from Hong Kong.
The unit appears to have four wires. 
One Black for DC 'ground', one Red for DC 'plus'; & 2 White which would appear to be the High-Voltage side of the unit. 

In reading a little about them, they are a form of inverter which uses DC voltage to produce AC. 
I am sure internally, the unit is using some sort of switched-capacitor circuitry to do this.
It is a fairly common technique, used for example on boats and in RVs to obtain household type power from the 12v batteries. 

Since the two white leads are producing AC (I assume), they have no polarity. 
Without knowing the specifics of what you have, I am basing this on my background in electrical engineering. 
Take a look at the units on eBay and see if yours looks similar.

Some of the application notes I looked at, caution against using more than a 9v battery as a power source. 
Having no clue as to what you are planning to do and how you plan to do it, I can offer no advise on wiring or safety considerations. 

I do know that I stay out of color TV sets because of large voltages stored in the circuitry that moves the electron beam over the picture tube. 
Those circuits can exceed 50,000v which is enough to really upset your day if you happen to hit it by accident. 
High voltages can be very dangerous if proper precautions are not taken.

Kent K
In a world without walls and fences, who needs Windows and Gates
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