Powerful power supply for the bass amplifier, 27 volts 3 amps. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Power Supplies
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This unit (Fig. 3.7) was developed to power a powerful bass amplifier. It has an output voltage of 27 V, load current of 3 A.
The power supply is bipolar, made on complementary composite transistors KT825, KT827. Both arms of the stabilizer are made according to the same scheme, but in the other arm, the polarity of the capacitors is changed and transistors of a different structure are used. Within a small range, the output voltage can be selected by resistor R4.
The printed circuit board of the block is shown in fig. 3.8.
Author: Semyan A.P.
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