Newbie level 2
i want to design a pure sine wave inverter, using a quadrature oscillator to serve as the sine wave gen. and a 555 timer and 2n3906 as the triangular wave gen. please how do i go about it.
1) The Exar XR2206 IC is not made anymore.Using XR2206 will give you the sine wave directly and a mains transformer will step up you voltage to the required voltage
Yes, some inverters use a DC to DC converter at a high frequency so the transformer is small with a ferrite core. Then they use high voltage Mosfets to switch the output with Pulse-Width-Modulation. The output filter is usually an LC, not just an inductor.Just an idea: I once thougt of making a sinewave inverter this way: a quick-and-dirty unregulated DC-to-DC, suplying high voltage DC to a switching power stage, driven by a PWM created from sine values. An inductor in series with the output smooths the pulses into a continuous sine.