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Re: Cant Understand Current Adjustment Function in Lab power supply???
Dear Sir,
hence second LM117 is constatnt current source supplying 1.56v @ 10.4mA. I should not any more see it as a voltage regulator. It is a current source supplying 1.56v to adjust my output current from...
Re: Cant Understand Current Adjustment Function in Lab power supply???
Sir,
i dont know how to ask my doubt.
1)Please explain the secong LM117 function?
2)why negative supply is given to vout terminal of second LM117?
normally 1.2V will be present between adj pin and Vout pin...
Cant Understand Current Adjustment Function in Lab power supply???
Hi to all!!!!
I cant understand the function of LM117 present accross the output. Why it should be connected to negative supply voltage to the output terminal.what is the function of 150 ohm variable resistor?
Thanks to all..
I am a college going student. Please give me some books which give clear perspective of what is happening in the OPAMP circuit and if i chance certain parameter is changed what can happen?
Hi all,
I found this circuit to be delivering 5 Ampere current. Resistance R6 and R8 form the voltage adjust function. I cant understand the operation of opamp. How to analyses and understand the operation of OPamp?
LM723 and Variable Current Control Technique????
Hi to all!!
This was a circuit Taken from google search.
the doubt is first circuit , how does the current control knob operates that is 1Kohm 10 turns potentiometer in the first circuit?
the second circuit contain potentiometer...
HI to all !!!!
Give the secrets to be considered while working with 3 terminal Adjustable regulators Like LM317,LM350, LM338,LM337 etc.
Please give me do and don'ts while working with LM 338. It could be a precautionary step to protect integrated circuits because it cost 100 Indian rupees...
Hi to all,
Please suggest me a Circuit Drawing Software for free. I am not going to use it for simulation.
I have to present my assignments to my college.
Kindly help me in this regard..
Hi to all!!!!
I want to construct CC CV Regulated POwer Supply Circuit For Laboratory Bench use. I am Totally Confused of Circuits available in Google. Every time i construct and Obtain Magic smoke out of it..
Please Give Circits with CC CV Regulated POwer Supply Circuit for...
Thank you sir...
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Many Circuit are incomplete or It does not have Reason For using Particular Value for the circuit... So All Google contents are not reliable.....
When it Comes to high current power supply, You can give some suggestions to built the circuit...
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I designed a Lab power supply with LM723(for 0-30V @ 5Ampere),Initially I limited the current at .65 ampere(I limit=o.65V/1 ohm). But the problem is ,the IC is not performing the current limiting operation, eventhough it had potential difference is 5V across its base to emitter transistor which...
Respected Sir,
It is 6*5=30 watts(VA) but can i with draw 10 Ampere ( 6V*10A=60 amps) because i am Loading Only 6V. Then I can efficiently use the transformer. Other Wise my efficiency is 50% when it is 6V*5A.
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