Daylight lamp power supply from 12 volts. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Daylight lamp power supply from 12 volts. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Lighting

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The transformer is assembled on a W-shaped ferrite core Ш8х8. When manufacturing a transformer, pay attention to the quality of the winding. The winding should be carried out turn to turn, with each layer wrapped with either capacitor paper or fluoroplastic tape. After winding all the windings, the transformer must be impregnated with epoxy diluted in alcohol so that there is no breakdown of the windings.

I -30 turns PEV-2 0,3mm
II -12 turns PEV-2 0,3mm
III-550 turns PEV-2 0,3mm

The dots show the beginning of the windings. First, we wind the third winding, then attach the output of the second winding to the output of the third winding and wind it in the opposite direction. Then, we wind the first winding.

The transistor must be placed on the radiator. The button is used to light the lamp if this does not happen immediately, but usually the lamps ignite themselves.

Daylight lamp power supply from 12 volts. circuit diagram

Connect the lamp, and then apply power (Not vice versa! Otherwise, the transformer may break through!). If the lamp does not light up, then swap the terminals of the I winding.

Download scheme in LAY format

Author: Zheka, asd1995sse [dog] yandex.com; Publication: cxem.net

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