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Recent content by assu

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    Need IR codes of KT-109E

    Hi, I am working on building up database for remote controller for Air Conditioners. I used Chris Young's IRLib to record and transmit various codes of LG and Dawlance air conditioner using Arduino Mega 2560. While decoding codes of Dawlance Air conditioner I found out that the codes at temp...
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    DC/DC converter-battery charging-by solar panel

    Please have a look at the below ckt and kindly tell what seems to be wrong... i cannot achieve 13.5VOLTS required to charge battery...
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    Buck/Boost or Cuk converter IC

    The idea is to monitor the output voltage and control the output with an externally fed pwm.
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    Buck/Boost or Cuk converter IC

    yes,control it via microcontoller... can it not be controlled via external pwm ? because what FB is fed is the voltage by RESISTOR network.
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    Buck/Boost or Cuk converter IC

    according to my understanding, it cannot be controlled by external pwm or external switch.
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    Buck/Boost or Cuk converter IC

    the battery is 12 v 45Ah and i m going to charge at 5 amp which is 10% charging current,also i think buck converter will work when input is 16V so charge voltage maybe 14V and current should be 4~5 amp which is most suitable. if input varies below 12V then boost wil come in place which will...
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    Buck/Boost or Cuk converter IC

    Greetings, I need to design buck/boost or CUK converter to charge a battery. Input= 16V 7Amp Output= 11~14V 5 Amp I need to know if their are any IC's AVAILABLE which can control the output via pwm. I searched some of them but found it to be difficult
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    +12V source switching (lowest part count, lowest cost)

    What you have to say about this...
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    DC/DC converter-battery charging-by solar panel

    Parasitic resistance is a tough thing to find out, but then it leads me to try different types of inductor maybe iron core,for now i was using ferrit core.... Also it leads to try using MOSFET rather than npn transistor with base connected to 200Ohm resistance fed by PWM from MicroController
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    DC/DC converter-battery charging-by solar panel

    well i tested the ckt physically and tend to get 7v at output without output cap but it couldnt drive any load may it be a 6v motor, no current was passing.... my source was a dc supply of 12v 1.2amp.... also whenever output cap was inserted the voltage drop to 1v....can u tell what could be...
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    DC/DC converter-battery charging-by solar panel

    By choke means this https://en.wikipedia.org/wiki/Choke_(electronics) Also is their any formula for calculating input cap ? And shall the diode not be placed in opposite direction?
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    DC/DC converter-battery charging-by solar panel

    thebuck/boost ckt i made https://commons.wikimedia.org/wiki/File:Buckboost_conventions.svg#mediaviewer/File:Buckboost_conventions.svg Well,experimenting is the only solution to get the best design working. However, what i have read over the internet and in some books CUK is best when u need...
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    DC/DC converter-battery charging-by solar panel

    Greetings, I have solar panel which produces following Vmp=16V Imp=7.5A P=120W Battery to be charged is 12V 45Ah Lead Acid Now, I will be charging the battery at 14V and 5Amp (i.e., approx 10% of 45Amp) I have found buck converter would be feasible for this solution but on the other hand if PV...
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    Variable Voltage source using PWM and Mosfets.

    could you please tell, if the signal source provides upto 25mAmp max,would that be enough? or can link to some formulation for the calculation. For learning purpose
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    ir2110 heating issue

    okay thanks for the suggestions, ill check the ckt practically and post the result. Also answer post #10 for boost strap capacitor c3 and c4, only c4 100nf ceramic cap can be connected?

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