EEVblog 1606 - $45 AlienTek DP100 100W USB-C PSU REVIEW
2024年3月29日 · Here's a picture of it paired with a Nomad 35W USB C charger, to power a resistor in the smallest variable bench power supply with adjustable current and voltage limits that I've yet seen. FYI, that slim Nomad adapter is available in 35W and 65W versions from nomadgoods.com.
$45 AlienTek DP100 100W USB-C PSU REVIEW - EEVblog
2024年3月30日 · 00:00 – AlienTek DP100 100W USB-C PSU Unboxing 02:43 – Power on and operation 08:57 – User Manual 10:01 – Trying USB-C source 10:44 – Setting Menu 12:00 – uSupply Inception 12:55 – Physical size comparison 13:16 – Teardown 14:44 – PCB Inspection and design analysis 18:14 – BOM Consolidation & MOSFET’s 19:15 – USB Power ...
Using Blood Pressure Monitor with USB to DC Power Cable?
2021年11月27日 · Hello. I found USB Female to DC cable and it matched DC input on my blood pressure meter. However it requires 6V power while the most I can get is 5V. What would happen if I connected 5V DC cable to blood pressure meter? Nothing mentioned on blood pressure monitor about amperes too... I have 5V, 5.1V 1A and 2A power wall chargers.
Automatic power switching between two DC inputs - Page 1
2015年11月12日 · I'm developing a project that can be powered by two seperate inputs - either a 5V USB connector, or a nominal 12V DC jack. The project must be capable of being powered by either input - alternativly if both are present, it should draw power from the 12V DC jack. The current draw is around 1A max.
New miniature programmable DC power supply - FNIRSI DPS-150
2024年9月4日 · Okay, I did a very quick check for ripple using the usb C input. I'm using a relatively cheap Amazon Basics 100W USB wall charger. Under load, the ripple is negligible. I used a 1A load and varied the voltage from 1V to 20V. I also compared it with the ripple from the output of my Rigol DP832 power supply and I couldn't see any difference.
New Fnirsi DPS-150 mini lab power supply (30 V, 5 A, USB PD …
2024年9月2日 · PD support, without any specs for what power delivery standard it carries.. One could hope with. its 150W rating, its PD3.1 from its TypeC as a lot of products & powerbanks are getting PD3.1 support (28v 5A) at significantly lower prices than previously, but the mixed barrel DC + Type makes it easy to use of-the-shelf PD3.1 triggers.
USB testers: T18 / UD18 / UD24 - Page 1 - EEVblog
2020年12月14日 · Thus you must use a USB cable that is suitable for that task, you cannot make that connection to the power supply using a DC Barrel cable. If you have a "non-triggering" meter like a UD18/24 you can insert it into the corresponding USB power outlet port, then insert a QC or PD Trigger into one of the available OUTPUT ports on the same tester.
How to make a simple, noise free 5v->3.3v DC linear voltage
2024年3月19日 · If I look at the functional block diagram of XC6206 and AP2112 and similar, they generally speaking consist of a voltage comparator connected to input and voltage reference (fixed 3.3v in this case) and output of the comparator is connected to mosfet which switches the input on and off thus charging the output capacitor to maintain the desired 3.3v.
Sequre HT-140 SMD Desoldering Tweezers REVIEW - Page 1
2024年11月5日 · The first part is whether the tip is grounded to the USB shield (the heater resistor in the tip is pretty low resistance so it can be worthwhile to check the tip to USB shield voltage while the iron is running), and the second part is whether the USB-C charger is grounded (unlikely given the lack of AC GND pin).
Increase accuracy of Owon P4305 DC power by self-calibrating
2023年8月29日 · Instructions to access the hidden menu of Owon P4305 are available on Youtube. I present again how to press the key as follows: - Connect Owon P4305 with high precision DMM for calibration, pay attention if you want to calibrate the current, the DMM should be greater than 5A - Press the keys in order: System - up - OK - right - down - After entering …