POWER UNIT OF AUTOMOBILE ELECTRICAL SYSTEM Russian patent published in 2015 - IPC H02J7/10 G05F1/00 G05F1/56 

FIELD: electricity.

SUBSTANCE: device comprises auxiliary power supply source connected to automobile 12 V accumulator battery, half-bridge transistor converter, current-limiting resistor, current sensor, transformer-rectifying cascade, input filter, output filter, the first and second power amplifiers for transistor control of half-bridge transistor converter, voltage regulator, comparator, RS-trigger and toggle flip-flop, the first and second relays, voltage sensor at positive input terminal of half-bridge transistor converter, the first and second 4OR-NOT logic elements; the device also comprises square-wave generator and power supply source includes step-down PWM-regulator formed by in-series valve and field transistor, and the third power amplifier connected to gate of the field transistor, at that the second output of voltage regulator through indicator is connected to positive terminal of automobile 12 V accumulator battery.

EFFECT: improved power characteristics and expanded functionality of the device.

1 dwg