Questions tagged [voltage-drop]

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2answers
61 views

Why does the voltage drop when connected to loads and what's the solution?

I have thermoelectric modules and set it in series, then I connected to a DC to DC step up (CN6009) to enhance the voltage. Then I connected to my phone with usb charger to try charge with it, but the ...
6
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3answers
528 views

Simplest way to reduce voltage from ~48v to ~36v

(I'm very much a beginner with electronics, so I apologise in advance) I’m trying to use a 48v battery on my 36v ebike controller. The controller itself can deal with the higher voltage, but it has ...
0
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1answer
30 views

1602a LCD - Voltage drops to zero when both VSS and VDD are connected

I'm currently trying to connect a 1602a LCD screen to an ATMega328P MCU: As you can see, I use an Arduino Uno for power supply and as ISP. However, when I connect both the first (VSS) and second (VDD)...
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2answers
73 views

Why is voltage across LED filament bulb slowly decreasing?

I'm trying to power this LED filament bulb with a 12V - 2A DC wall adapter. LED specs: rated at 4W 12 to 24V input I'm pretty new to this, but if I get it right: Calculus the LED bulb will draw ...
-4
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2answers
86 views

What resistance is required to drop 12v 11A DC to compleate 0v? [closed]

Let's not lie. I'm a big fan of LEDs. I have about a meter long strip (3.2W) plugged to a computer power supply through connector capable of supplying 12V and 11A. I was about to buy a 10k Ohm ...
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3answers
88 views

Voltage Drop due to inrush current

When an air-conditioner is switched on, light bulbs in the house flicker a little. I was told that this is due to the inrush current of the ac. I am assuming that voltage drop is causing the ...
1
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4answers
99 views

Does resistance decrease over a resistor?

If ohms law pertains to voltage, current, resistance across a resistor, in order for voltage to drop, and current to remain the same, does resistance drop as well across the resistor? To explain what ...
0
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0answers
33 views

Voltage Drop - Sizing Feeders

I am reviewing a value engineering proposal consisting of downsizing the main feeders to the moveable bridge. for the voltage drop, they calculated the total current draw for the worst case scenario ...
0
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1answer
47 views

What additional factors need to be considered when calculating voltage drop?

Considering the following formulas for voltage drop, what additional factors need to be included and how can resistance be derived to thoroughly calculate theoretical voltage drop for multiple ...
3
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4answers
589 views

How to avoid voltage drop when using full bridge rectifier as reverse polarity protection

I found a couple of old bridge rectifiers. After reading some docs and tutorials about reverse polarity protection decided to give them a try. The problem is nobody offered a solution against the ...
1
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1answer
72 views

Mitigate voltage drops when using a relay

Hi and thank you for reading my question. I have a small experimental solar panel setup which charges a deep-cycle battery using an MPPT converter. I would like to power some garage and garden lights ...
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2answers
80 views

How to add 0.2V per Ampère that device draws? (Voltage drop compensation)

I have noticed that many mobile phone chargers already do this: For each 1 A of current that the mobile phone draws, the charger's output will be increased by 0.05V or 0.1V or something similar, to ...