The scheme of such a source is shown in the figure. It consists of two stable rectifiers from one of the transformer T1. The output voltage of the source may vary from 3 V to 20 V At a load current of 0.5 A. the Coefficient instability voltage of not less than 0.5%. Both shoulders of the source is identical and independent.
Rectifiers are collected by a full-wave bridge circuit using diode assemblies CCA. Actually stabilizer made on chips KEG and transistors V1 in one shoulder and V2 in the other shoulder. Adjusting the output voltage is variable resistors R2 and R4. The transistors V1 and V2 installed on blackened aluminum radiators. The area of each radiator 400 cm2. The variable resistors R2 and R4 type SPO-0,5. The transformer T1 is wound on the yoke SH. Winding I contains 1210 turns of PEV-1 is 0.3 mm, the winding II and III - 90 turns sew-1 to 0.67 mm.
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