Quasi-resonant DC voltage converter with low ripple output voltage when operating in conditions of high negative temperatures

摘要

A quasi-resonant DC-voltage converter with low ripple output voltage refers to the conversion technique and can be used as a power source for LED lamps from an AC rectifier, when operating in conditions of high negative ambient temperatures. The technical result consists in reducing the output ripple of the output voltage / current of the converter at a negative temperature, by adjusting the voltage on the current regulator transistor, compensating for the ripple, in accordance with the ambient temperature, and using the increased power allocated to the current stabilizer transistor to heat the output electrolytic capacitor . 6 ill.