posted on Jul, 9 2008 @ 05:45 PM
Yep, thats what I thought you were asking. As per my first post, no, you won't get an inverter out of a battery charger.
An AC to DC transformer (like your battery charger) employs the use of
1: A transformer coil.
2: A Bridge Rectifier.
3: Capacitors to smooth the signal.
4: A current limiting circuit to stop overcharging.
The transformer is pretty universal, you can use it backwards, but all it's going to do is step the voltage up or down, sacrificing or amplifying
amperage depending on how you use it.
The Bridge Rectifier works by allowing electrical current to move in only one direction. Think of it like a one way valve. You can push water back and
forth through a pipe, but it will only exit the pipe in one direction.
The bridge rectifier uses 4 diodes typically, (unless it's a half wave), as the AC wave moves in one direction, the current is allowed to move
through the next part of the circuit via 2 of the diodes... as the AC wave moves in the opposite direction, the other 2 diodes send current in the
same direction as the last two. Meaning all current is now traveling in one direction, instead of back and forth like in AC.
The capacitors then are used to smooth the current into a nice smooth DC line. Otherwise, you would have end up with pulsed DC, which would fry
computerized electronics or anything with logic gates.
After that, you have a current limiting circuit, which checks on the current passing through the battery to determine when it has reached its full
potential. At which point it opens the circuit (turns the DC half off) so that it doesn't overcharge your battery causing damage, heating, loss of
battery acid and corrosion.
The only part of this you could use in a DC to AC inverter is the coil. Depending on what you want to use it for, and the capacitors to smooth the
edges of the created wave out.
You still need to create a timed trigger in both directions, and use a relay to switch the output of the coil at 60Hz.
Your capacitors would be used after that to eliminate the jagged edges on it after that, otherwise, you end up with a square wave.
(Which can also do some serious damage to most household electronics.)