HR Diemen

Inverter or ondulator, is an electronic circuit used to turn direct current (DC) into alternating current (AC). The function of an inverter is to change the voltage of entry of direct current (it normally comes from a battery of 12 or 24 Vdc) to an alternate voltage of exit (normally tension of network (net) 110 or 230 Vac).
HR Diemen - schematic

The inverters are in the habit of being composed of an oscillator that controls a transistor wich is used to interrupt the constant tension of entry and to generate a square wave. This square wave feeds a transformer that adapts the tension level wiched in the exit and a final filter smooth the waveform making it very similar to a pure sine wave. It is also possible to generate modified sine wave, wich is generated from three points: one positive, the negative one and one to ground. Modified since wave inverters can cause less efficiency especially when working with inductive loads. Peak of Power. - Some equipments as, for example those who take an engine, they need an increase of power when being connected. Once the equipment is in a permanent way the consumed power is minor and can continue operating in constant way. Input voltage range. - It is the voltage variation of the source (battery) that the inverter admits to work; below the minimal voltage and over the maximum voltage the inverter will stop giving power. THD (Total Harmonic Distorsion). - Of a signal, it is the measure of the harmonic present distortion in the signal and there is defined as the relation between the sum of the power of all the harmonic components and the power of the fundamental frequency.

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