Winkelwagen is nog leeg.
Winkelwagen is nog leeg.Productbeschrijving
Interficiam
1 augustus 2025
Cheap, but works good. You do have to turn the potentiometer a lot before the voltage starts changing. I almost thought they were broken.
Pieter Bominaar
22 juli 2025
Van de 10 op een afbreek-printkartonnetje werkt er maar 1! Tweede werkte heel even.Precies gedaan zoals het in de Engelse handleiding staat: vóór aansluiten 15 slagenklokwaarts van de potmeter draaien. Onbelast en daarna lichtbelast: niets te regelen.De uitgangsspanning blijft gelijk aan de ingangsspanning, hoe ik de potmeter ook verdraai.Het IC'tje met code B628 (microcontroler?) is ook nergens te vinden.Terugstuurdatum was al verstreken door drukke werkzaamheden elders.
CRebel
13 juli 2025
Alle prints die binnen zijn gekomen werken allemaal niet!
Christian David
14 juni 2025
Magnifique
Nur ein Name
3 december 2024
With the multi turn potentiometer one can set the output voltage. It needs quite some turns to get to the correct range at first. If e.g. 5V output needs to be set you have to turn quite often to get into the 5V range. When the correct set point was found the voltage can be set with good accuracy.E.g. with 2.5V input voltage the circuit can be set to produce 5V output. The output voltage is then quite stable over input voltage variations (e.g. LiPo range: 2.5-4.2V). However the output voltage is dropping with more and more output current (as expected). With average thin cables (~10cm each side) I got the measurement attached. It shows ~450mV drop when pulling 500mA out of the 5V side. So at 500mA load current the output drops to roughly 4.55V. Some might be attributed to my cables. The input current rises at the same time to ~1.4A which is partly due to the conversion factor of 2 (2.5Vin and 5Vout => Input current must be more than twice the output current). In reality it consumes 1.4A which gives a total efficiency at 500mA and voltage 1:2 ratio of >60%. At low currents it reaches 90%. Again some could be attributed to my cables and losses in the cables and connectors. E.g. a spot measurement of the input voltage of the module at 500mA output current (1.4A input current) when the external supply is set to 2.5V is already dropped to 2.31V on the input pins of the module. So this should be corrected out, but I am too lazy right now.Edit: I added two more diagrams with an input voltage sweep from 2.5V to 4.2V (LiPo range) and zero load (1mA). Further I added the same sweep with 500mA load current. In both cases the output voltage (5V set point) stayed rather constant (10mV change for no load and 80mV change for 500mA load) but the 500mV drop for the high load stays as it is. So the output voltage is quite load dependent but not input voltage dependent. The efficiency is as expected and rises to ~80% even for 500mA load if we have 4.2V input voltage.
johan k
27 november 2024
är nöjd. fungerar som utlovat.
Armin Krichbaum
26 november 2024
Genau wie beschrieben, zum einstellen der Voltzahl benötige ich eine Lupe und ruhige Hände. 9 Volt Batterie ersetzte ich jetzt mit einem 3,7 Volt Akku.
Stef
4 november 2024
Lassen sich gut verarbeiten, bis jetzt keine Ausfälle.
Aanbevolen producten