It takes 12 VDC and steps it up to 120 VAC. The wattage depends on which tansistors you use for Q1 and Q2, as well as how "big" a transformer you use for T1. The inverter can be constructed to supply anywhere from 1 to 1000 (1 KW) watts.
http://www.aaroncake.net/circuits/inverter.asp
It uses a normal 120 to 6V stepdown transformer in reverse to step 12V to about 350V to drive a lamp without the need to warm the filaments.
http://www.aaroncake.net/circuits/flampdrv.htm
This circuit will allow you to operate small devices like laptop computers inside your automobile without an expensive automobile power supply.
http://www.web-ee.com/Schematics/110VAC%20Inverter%20for%20Automobile/inverter.htm
DC/AC invertor with center-tapless transformer.
http://www.hobby-elec.org/e_ckt30.htm
DC/AC invertor with center-tapless transformer.
http://www.hobby-elec.org/e_ckt30.htm
The project presented is a 2kVA power inverter designed for backup during utility failures. The inverter is affectionately called the I2K for two reasons: It has a 2kVA output capacity and some have suggested it might have been useful when Y2K hits (remember the Y2K paranoia/fiasco :) Duh.
http://www.technology.niagarac.on.ca/people/mcsele/i2k.htm
takes 12 VDC and steps it up to 120 VAC.
http://www.aaroncake.net/circuits/inverter.htm
most reverse engineered from commercial products
http://www.repairfaq.org/REPAIR/F_samschem.html#SAMSCHEM_008
You sometimes need an inexpensive VCO that can produce evenly spaced three-phase outputs over a wide frequency range. This application uses unbuffered U-type inverters for use in ring oscillator setup which generates relatively squarish somewhat sine-like
http://www.edn.com/article/CA149120.html
Construction plans and detailed description for low cost power inverters for high voltage to power up radio amateur's electron tube transmitters.
http://www.qsl.net/dg5sga/inverter.htm