Hi.. i have design a inverter circuit 12Vdc / 220 Vac 20W... i'm doing it in a simu program (Pspice) but i cant get the signal from output.. i need the inductance formula of transformer.. could u send me the formula pls? if there is something wrong in my design pls say it too.. circuit is this;

Hello, Here are two links : one from epanorama : http://www.epanorama.net/documents/components/transformers.html And one from electricianeducation : http://www.electricianeducation.com/theory/electric_transformers.htm They are talking abou the inductance of a transformer. Greetings, Bertus PS here is hoe i found the links : http://nl.altavista.com/web/results...la&aqo=&aqn=&kgs=1&kls=0&dt=tmperiod&d2=0&dfr[d]=1&dfr[m]=1&dfr[y]=1980&dto[d]=28&dto[m]=12&dto[y]=2008&filetype=&rc=dmn&swd=&lh=&nbq=10&stq=10

i have found a formula that is; L = N^2 * μ * A / l L = Inductance of coil in Henrys N = Number of turns in wire coil μ = Permeability of core material A = Area of coil in square meters l = Average length of coil in meters i calculate the primary and secondary inductance with this formula and write it to simu program but still it isnt working.. what am i going to do right now i have no idea... pls help me

I can't help a bit with the PSPICE, but the relationship of inductors to transformers is slim. They don't model that way. The addition of the second coil tightly coupled to the first changes its whole character.