All Questions
8
questions
0
votes
0
answers
40
views
Proper DC supply vs batteries
For the current limiter circuit(using voltage regulator), proper DC supply matches the simulation results. However, when a battery of equal supply voltage is connected, the circuit goes haywire i.e. ...
0
votes
3
answers
57
views
Power supply circuits to supply specific voltage with current limitations
I have an old sensor that requires 200mA at 5v DC, but it does not have any overcurrent protections and will blow a capacitor if the current is too high. Is there some kind of current limiter circuit ...
0
votes
0
answers
74
views
Adding max current regulation to outlet of voltage regulator
Hello I have the following circuit that I'd like to use to charge a battery. The battery is specified to charge up to 12.6V max and so I have implemented a voltage regulator that will produce this ...
- 1,263
0
votes
1
answer
407
views
Can we add a current limiter circuit to LM2576 fixed voltage version?
I know I can add an external current sense and comparator circuit to the feedback pin of LM2576-ADJ version to limit current, but can we make such a modified arrangement to a fixed version of the ...
- 163
0
votes
1
answer
65
views
Stepping down voltage
I have a LiPo that is 1800mAh,25C,11.1V. it can supply a current of 1.8*25 = 45A. I need a current of 3.5A to drive a LOAD(a Nichrome wire of length 5-6cm) and 7.4V. How do i proceed with this ?
I ...
0
votes
3
answers
3k
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How to limit current for voltage regulator/decrease power dissipation?
I need to power a 5V device that needs more or less 1.2A in order to work correctly. I'm using a 13.8V power source with two diodes in series (1N4007) to limit the voltage to roughly 12V. I tried ...
- 3
1
vote
2
answers
2k
views
Digital voltage/current controller for DIY bench power supply
I'm trying to design a portable rechargeable bench power supply. I have a 12V sealed lead-acid battery (WP7.2-12) which I can use as the main power source. These batteries are cheap and easy to ...
- 2,696
1
vote
2
answers
227
views
Is there a theoretical limit to power supply transformation efficiency?
As I'm looking at some resistive-load applications I'm wondering whether there are any rules that put an upper-limit on supply-matching efficiency. Because if a load isn't matched to the power supply ...
- 2,432