Power supply on the LM723 chip 0-30 volts, 3-5 amps. Scheme, description

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Power supply on the LM723 chip 0-30 volts, 3-5 amps. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Power Supplies

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For many years I had the LM723 chip on the shelf. Previously, foreign magazines presented designs on this chip in the 80s and 90s. These are well-known magazines "RADIOTECHNIKA" (Hungary), "FUNKAMATEUR" (Germany) and others. Currently, this chip has become available in Russia. The limits for adjusting the output voltage (according to the passport) are from 2 to 37 V. After a little thought, I built a power supply on this chip with the parameters:

Uout...................... 0...30V
Iout...................... 3...5A

Rice. 1. Power supply on the LM723 chip

Resistor R8 sets the upper limit of adjustment, i.e. 30,4 V. Current and voltage protection can be set to any one that suits you. In the author's version, the indication is digital. The power supply was assembled as an experimental one, it was tested and showed good results. At my request, it was repeated by several radio amateurs. There were no complaints. In the author's version, the transformer was taken ShL25 / 40-25. The current was used at 3A (there was no need for more current). The display unit is made on the KR572PV2A chip. The printed circuit board was developed, depending on the parts used. Good luck repeating. All questions by e-mail, patrin@tamb.ru.

Author: Patrin, Patrin Anatoly, Kirsanov, Russia, Tambov region; Publication: radioradar.net

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