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# Pwm Charger

42 Threads found on edaboard.com: Pwm Charger

## [PIC] Solar Battery Charger

The pwm duty cycle calculations don't apply to the given circuit which is no boost voltage converter. Instead you are chopping the solar panel output current. No problem if you don't need maximum efficiency. The "panel voltage" measurement isn't of much use unless you synchronize the ADC with the pwm. Similarly the battery current is also pulsed

## PWM based current regulator for a battery charger

Hi, it seems if you just make a simple example, you find out what happens.... (This should be your part... at least to give some data or other informations... now we just can assume what you want to do..) Imagine you want to charge a Pb battery. When the battery is empty you will see maybe 10.5V When it is slowly full charged you will see

## switched mode car battery charger

sir i have to design a switched mode car battery charger with full bridge topology and for pwm , frequency and feedback i have to use ka3525 . i am new in electronics so please sir 1st) give me a complete block diagram of full bridge topology and 2nd) circuit of ka3525 to get the above three jobs.. i have searched google but there is no circuit

## Why is charger over-ripple-current'ing its electrolytic capacitors?

VXH is rated for Load Life= 5000 hours. @105℃ which is least 3x that of cheap light bulbs (1500 h). I guess they were calculating it would last at least the warranty period. Was it interleaved pwm controlled? or constant duty cycle single phase? or? Did you measure that accurately? or guess. Also ripple rating increases with switch frequ

## Buck-boost PWM scheme

I want to build a solar battery charger (Uin = 20 .. 90V, Uout = 48V, P = 2000W) using a synchronous buck-boost converter topology (H-bridge). I wonder what's the best pwm scheme to drive the bridge switches (MOSFETs). Most integrated buck-boost driver ICs are using three separate schemes: buck only, boost only or buck-boost, depending on Vin-Vo

## Choosing a suitable PIC microcontroller for a solar charger

Hi All, I'm planning to build a pwm solar charger for home use with flexibility/scalability in mind. I'm a beginner with less experience in pic programming. I expect to incorporate the solar charger with below features. 1. Based on pwm algorithm 2. Charging multiple 12V sealed lead acid batteries 3. 20x4 character (...)

## Buck Converter for 3 stage battery charger

You have to use an output current sensor (ACS714). For stage 1: by reading the output current value with your PIC (ADC pin) you could increase/decrease the pwm ratio to keep that output current at a constant value (18 A). You don't have to worry about the output voltage as the battery internal resistance will self regulate it. For stage 2, you ha

## how to control multiple 78xx with one potentiometer?

why not use a simple pwm switch for each table from a central DC source such as battery & charger. The regulator would cost same or less than one 4W LED. A Master brightness could then be used with a central power source with voltage from 11 to 14V. Each table should have PTC protection and EMI filter. Then you can use my design for outd

## [Moved] SLA Battery charger for 7 AH 12 V battery powering 2 routers

For the isolation sake, you could build the simplest flyback/forward converter with two (identical?) secondary windings. All you need is a cheap MOSFET switch, a small ferrite core and a LM555 as a pwm generator. Of course, you also need two rectification diodes and capacitors but it's an economical solution anyway.

## lead acid battery charger using PWM

You can make a very simple boost circuit to boost up the voltage so that you can drive the N-channel MOSFET in the high side configuration. In fact, you can even generate the required pwm signal from the ATmega itself. You can't use a capacitor-based bootstrap driver if you have high duty cycles. Your method looks like it's going to employ a form

I am totally new to C. I am stuck as same, I was trying for a pwm Charging Controller but stumbled at battery full cut off. when my battery reach 14.4 the pwm = 0 but the moment the battery lowers then 14.4 the charger starts again.. off again and so on. the question is how can I: when the battery reach 14.4 then the (...)

## AC lamp dimmer using MOSFET PWM.

AC lamp dimmer using MOSFET pwm. circuit diagram [url=obrazki.elek

## 2000 Watt Dc-Ac inverter with three ic erased

i have been able to identify the three ic's erased in the Excel 2000watt inverter-charger. Replace the three ic's with SG3525A pwm ic. The inverter has 2* LM324. Test all Dc-DC Mosfets usually IRFZ44 you can replace with the 3205 they work fine. The H-Bridge uses the IRF740 or equivalent.

## Design of DC/DC with PMW

It is PMW or pwm??

## How do we design a Microcontroller Based Battery Charger ?

hello I need to implement the following circuit for charging a 24V battery. Can someone guide me how do I write the algorithm for driving the SCRs through pwm ? And I also need to know which parameters are to be considered while charging the battery. And also the best method to calculate the firing angle for triggering the SCRs. [url=obra

## Advice on power supply schematic

here's a few ideas - drop the 0.3R to 0.1R if you mount all active devices on a CPU cooler with low speed fan. - use a series pass transistor as pwm controlled charger to maintain a lower Voltage drop on the regulators or use a stock SMPS to maintain a 2 V drop on the linear regulator. - use a lower

## Ac voltage regulator Idea!?

Hi i need some advise in this idea, i need to control Ac voltage of primary coil of 50hz transformer to build battrey charger, first main ac convert to dc using bridge then by using h-bridge and pwm control to generat from 180 v to 230 v ac routed to primary 220vac then i could control secondery voltage from 10 to 14 dc? is this good idea?

## Buck Circuit UC3843 Help!

I am currently designing a phone charger with an input of 220Vac and my desired output is 5Vdc with a maximum current of 350mA. We have been testing circuits using BUCK topology with pwm IC UC3843 but so far we don't have any good outputs. Do you have any working schematics which we could follow? Thanks