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New product
DC-DC Boost mode with USB plug useful for 5 V power supply, using a lower voltage supply.
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The DC-DC Boost is a low power and is useful for charging phones or other devices with less power. It can also be used to feed development boards or other circuits for your projects.
Being a switching power source, its efficiency is very good.
Alex
Cu o sursa reglabila sau un acumulator de 2300mAh@3.7V poti scoate cu ea maximum 130mA@5V sau 500mA@4.6V. Cu cat va creste tensiunea de intrare pana la pragul de 5V, cu atat va fi permis si un curent de iesire mai mare, sau curentul debitat va fi invers proportional cu tensiunea la iesire. Aplicativitatea este destul de limitata.
buna pe testate
Am luat-o si eu si am bagat la test , curios dar ....ce zice Alin Miron nu coincide.
Am testat de la 4 acumulatori inseriati de 1,2v si 2300mA astfel
1. am alimentat o mini lampa usb cumparata tot de aici si afisaza consum de 0.05 A
2. am alimentat placa leduri si afisaza consum 1 A .......deci cred ca mai si conteaza amperajul de intrare.
Eu unu sunt multumit
Doua in paralel
Pt un curent mai mare, conecteaza 2 sau mai multe in paralel.
Destul de bun
Merge bine la tensiuni joase, testat la 1.5V dar curentul de intrare se limiteaza la circa 500-600mA pentru orice tensiune de alimentare.
pare ok pentru proiecte cu consum mic
alimentat cu 3.7 volti dintr-o sursa reglabila capabila de un curent maxim de 3.5A, nu reusesc sa scot mai mult de 500ma din aceasta jucarie. pentru test am folosit smartphone-ul care cere la incarcare cam 800ma
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