All Questions
Tagged with current-limiting power-supply
82
questions
0
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1
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64
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How can I wire four Peltier modules in parallel with current limiting?
I am currently working on a project to cool different materials for a local young student program with engineering.
My thinking was to attach Peltier modules to different materials and, using an IR ...
- 1
0
votes
1
answer
33
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Can I use the CC/CV converter as the LED strip driver?
I have a power supply - Molex from power supply unit (5V, max current - 11A). Besides lighting there are other consumers that do not need current stabilisation. I want to power 9 ws2812b LED strips ...
- 3
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votes
1
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60
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Current limiting stopped working on a power supply
I have an old power supply (Tesla BS554) and all of a sudden the adjustable current limiter stopped working.
The supply is designed to limit the output current up to 1 A, but I am measuring short-...
- 87
1
vote
1
answer
67
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Protecting parallel loads
I have a project that has two separate sections that must be powered from the same power source. I do not know the resistance of said loads, but I know the power supply that each of them on their own ...
- 135
1
vote
1
answer
184
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Not able to get enough current from buck boost (sepic) converter made using TL494
I am trying to build a buckboost converter for converting 5-40v input to 5-35V output at 3A max to use it for many purposes by usign TL494. I am using a SEPIC topology as i want a non inverting output....
- 15
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38
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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. ...
4
votes
1
answer
763
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Why is this circuit not limiting current?
This is a 15V voltage regulator from Art of Electronics (page 694), and it is supposed to limit the output current to 1A.
However, when driving load impedance (R7) low enough, I am getting much higher ...
- 87
12
votes
5
answers
4k
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Is it recommended to set the current limit on a bench power supply by shorting it?
I have a Rapid 85-1901 switching mode 0-20V 0-5A bench power supply:
Without a load attached the current shows 0A no matter how you turn the dial.
After searching how to set the current limit online, ...
- 515
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4
answers
2k
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How to handle a current load that is *just* outside my 12V power supply's limits
I have a portable diesel heater which runs on 12V. When the heater starts, it warms a glow plug that draws somewhere in the range of 9-10A until the plug is hot (figure, roughly 1 min), after which ...
- 1
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votes
3
answers
57
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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
1
answer
108
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Control the current of a power supply using another variable power supply connected in series
While disassembling a little electric oven (rated for 1300W at 230V), I scavenged one of the heating elements inside, which I measured its resistance to be about 40 Ohms (let's call it ...
- 181
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votes
5
answers
64
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Interpreting datasheet for switching regulator
New to this and designing my first non-trivial circuit. I'll be using an ATMEGA168 and plan to run it at 3.3v/10MHz to maximize compatibility with other components.
I'll be placing this into some ...
- 115
1
vote
1
answer
161
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Why is the MOSFET current taking time to rise in linear mode of operation?
In the below current limiter circuit, why is the MOSFET current rising slowly?
Shouldn't the MOSFET current follow the equation \$i_D=\kappa(V_{GS}-V_{th})^2\$?
Ref: How to Make Linear Mode Work
- 3,032
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74
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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 ...
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-2
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1
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247
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What is the current through a diode in series with resistor when forward biased?
What is the current through a diode in series with resistor? Let's assume the source voltage is 12 V 800 mA max having a forward biased diode of 0.7 V drop connected in series with a resistor of 10 ...
