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16 Threads found on edaboard.com: Battery Power Regulation
Had you measured the Vpp voltage drop at the 12v power supply ? I mean, how much of that peak is due to the lack of regulation at the source? I presume that the remote 12v comes from a battery, right ?
Hello everyone I could like to ask a question: I have an USB battery with 5V output. How I boost from 5V to 12V with a charger? I have also have a DC to DC Boost Buck Converter from 5V to 12V, but it is not working! With a transformer from 220AC-to-5V DC it is working: 5V input and 12V output. But with battery does not working... Please hel
Hi I plan to use 4 x 9V batteries NiCd or NiMH (in series) to power-up my circuit which needs 12V and 36V. Each battery is rated 300mAh. If required, I can go for more expensive Lithium-ion batteries which are rated 500mAh. 1. Can I use 36V battery charging circuit to charge all 4 batteries simultaneously? 2. Will there be any (...)
This is not the first time I refer to this device: I really love it, especially the fact that it can transfer very frequently cell's low voltage to common USB voltage, which can charge v
Typical battery charger uses a 12V, 25W lamp as a series resistor. This way battery voltage cannot reach more than ~13.5 V while charging. No more regulation is needed and you can use your 16 V power supply. Make sure the supply can deliver at least 5-6 A into a discharged battery.
Regarding the design of the inverter, assuming that you're using a 50Hz transformer to step up, the stages are: PWM controller power MOSFET driver stage power MOSFET stage Output regulation / feedback stage Additional features - battery low cut, overload protection, short-circuit protection, etc As for the PW
I can imagine many circuits belonging to this category, e.g. self oscillating inductive voltage converters. I guess, the battery suggest an efficient converter and this will be most likely a modern integrated boost converter with low quiescent current and voltage regulation.
hey all i made a logic circuit contain cmos 4011,4071,4009,4010 ics 3 transistors bd139 buzzer ans 2 motors 1.5 v (motors which in toys) and the battery is 9v across regulation with 5v the problem : when i running the circuit , the power consumption of the battery is very high and the battery (...)
AN626 - Lead Acid battery Charger using the PIC14C000 - Application Notes - Details
I guess if you correctly limit current sourced by battery, you will not only protect zener diode but also battery itself. There should be an intermediate stage between battery and diode (might be as simple as a resistor) to adjust voltage and limit power dissipation. For Spice, do you use a general model or specific (...)
I'm currently working on a wireless battery charger circuit.I need some help figuring out why I have a particular problem and any means of solving it. In the attached simplified schematic, you will see a PLL controlling pulsed charging of a battery which is powered by a class E supply, regulated and through a buck boost to keep voltage (...)
Hi. I would like to develop a small circuit using analog ICs to be powered from a late model (2008) sport bike motorcycle 12v battery. I about load dumps, overvoltage, reverse voltage, etc., but to protect against these makes my circuit much more complicated. I have also read before that some vehicles are equipped with central surge suppressors
Hi! The attached file is a schematic of 50KHz SMPS power supply which uses 325 VDC (after rectification of Mains 240 V). The required current for charging Lead Acid battery is approx 20 Amperes. Please give comment if any modification in the circuit is required. (note: isolated 12V DC is used for control circuit) Voltage regulation is not (...)
what kind of HW HW have many areas power mangement , RF , basedband , audio interface and so on if rf u will be asked about matching , SAW compoents , TXRX architectures and so on power managment : battery charing , power control , supply regulation and decoupling khouly
317 voltage regulator is not a very good choice for battery based applications. You will be loosing alsmost 50% of battery power into heat on this linear regulator. Much better option will be a switchmode step-down dc/dc converter such as LM2572ADJ (adj stands for adjustable): (free samples option) I
Hi all. I am designing a 1KVA, 12VDC to 220V RMS AC, Sine Wave digital power inverter. It should be low cost, Sine Wave (PWM) design with good load regulation. Extras like pulsed battery charging are welcome. Any suggestions?