DollaTek 10 stks DC naar DC High Power Voltage Regulator 3.0-40 V naar 1.5-35 V Buck Converter DIY Voeding Step-Down Module

 

Good quality buck convertor with a precise range for the voltage.

Barato y útil para pequeños proyectos

Lets be honest, for this price range you get a working voltage regulator. That said it totally does not live up to it's specifications. Better efficiency than a lineair regulator but very poor performance compared to device that actual meet their specifications.All these cheap modules contain fake semiconductors, these are not National Semiconductor parts. The best efficiency you get from these modules halt at around 70% on average with some parts approaging 75%. So expect them to run hot at higher output currents and even hitting thermal cycling at currents above 1.5A.I give these 3 stars because they do a specific job for an excellent price, they are useful in lower current applications but avoid these in applications that require currents above 1A or high ratios between in and output voltages.

J'ai intégré ces petits alimentation dans des montages qui nécessite 5 volts avec un peu de puissance, cela fait fonctionner des raspberry Pi correctement.