It is the new version of the program for calculate of power transformers Transfor. In her the remarked inaccuracies of the previous version are eliminated, many new possibilities are added.
Modifications and additional possibilities of the program EvTrans V 2.1 alpha on a comparison with the previous version (Transfor V 1.07 alpha):

- the possibility of the task and modification by the user of a current density is added;
- the table of parameters of cores is fitted;
- in the table of parameters Sst*Sok is added, for want of choice of the core is removed necessary Sst*Sok; 
- the support of the English and Ukrainian languages is added;
- the possibility of set-up by the user of a configuration of colour of the interface of the program is added;
- the inaccuracies for want of calculation on the ring core are fitted;
- the calculation of impulse transformers on ferrite cores (calculation slightly is added is unfinished, the thermal parameters are not calculated, there are some inaccuracies for want of account of external dimensions of the obtained transformer)

To offload the program it is possible here.

     The program is written on TurboPascal 7.0. Allows calculaten power transformers, executed on core of the various form from electrotechnical steel (L -, w -,O - figurative and armored). Allows расчитать up to 99 windings and saves outcomes of account in the file. The algorithm for account is taken from the book: Терещук Р.М., Терещук К.М, Седов С.А. Semicondaktor resive-intensifying devices /  The directory of the radioamateur .-Kiiv: Наукова думка, 1981.-672p.
Download the program it is possible here.