login
arman92
-
Posts
9 -
Joined
-
Last visited
Never
Content Type
Profiles
Forums
Events
Posts posted by arman92
-
-
You said you used the SIM program called Protues, not Proteus.
Most of us use the newer SIM program called LTspice IV.
OK, so the problem was about an "e" and an "u" !!
I just downloaded the LTspice IV, seems to be a very simple software and to have a poor component library!
In my Proteus project, I changed the generator (AC) phase delay to 60 degrees,
and unbelievably when I run the project, the output voltage was 29.249 VDC which is what I wanted to have, but when the phase delay is zero, the output is 15 VDC
can you explain why these things happen?!
thanks a lot -
There are hundreds of SIM programs. I never heard about yours.
Ohh Really?
I thought Proteus is a very famous Simulation software (something as famous as Photoshop!!)
well... seems I'm not very lucky! -
I simulated 3-30 V/2.5 A Stabilized power supply in Protues,
but there was only 15VDC Output...
I don't know if I am doing something wrong in Schematics...
Would somebody please check it out and tell me what part is wrong?
here is the file... -
The old and simple LM723 regulator circuit needs a 6.8k resistor to ground at the base of the output transistor.
sorry if I ask silly questions, I'm amateur in electronics...
so it does not have a variable current and it's fixed at 2.5Amps.
there is no problem with minimum output (3V)
I'm confused and don't know what to do!
Can you suggest me a good power supply with available(familiar) components please?
Thanks -
If you add another output transistor to the output of an old LM723 regulator IC then each one needs its own 0.33 ohm emitter resistor like is used in the 0V to 30V, 3A project. The emitter resistors for the output transistors will reduce the max output voltage by about 0.33V.
Thanks for reply.
If I add another Transistor (with .33 Ohm emitter resistor) would it increase the Max. Current? Or a change in other resistors is needed?
You didn't tell me your own view about http://www.electronics-lab.com/projects/power/004/index.html power supply,
is that alright? or it need some changes ( as 0V to 30V 3 A needs)?
I really need to have a power supply and I'd like to do it myself!
thanks :) -
Ok, I looked at farnell.com but unfortunately they do not support our country.
24VDC output is a little low for me, I need at least 30VDC at output.
so, what do u say about this project? http://www.electronics-lab.com/projects/power/004/index.html
It has little components inside it, and it has regulated voltage that makes it better!!
But the Max. current is 2.5Amps , can it be higher? (by adding another 2n3055 and changing some resistor, just like you guys do in that power supply to get 5A Max)
Thank you (a lot ;D) -
I selected the TLE2141 or MC34071 opamps because their max supply voltage rating is 44V and they are available almost anywhere in North America.
The LM324 has a max supply voltage rating of only 32V which is much too low and it is a quad opamp (it has 4 opamps) not a single opamp.
Thank you for reply.
You said in North America, since I live in Asia!
If I use the LM324, and change the Transformer to another with a lower voltage,
would it be solved?
How much voltage can I get at maximum?
If there is no way to use LM324, would u tell me if there is another suitable power supply? (Max voltage about 30 - 40 , Current 2-4 amps)
Thanks :) -
Hi everybody.
I'm gonna create this power supply. I've bought every pieces!
but, I couldn't find neither TLE2141 nor MC34071 :( :( :(
I tried so hard and looked every single store in my city but no one has it...
Someone suggested me to use the "LM324N" op-amp instead of the original ones,
can you tell me if that's possible or not?
if possible, how can I do that?
thank you very much :)
0-30V Stabilized Power Supply
in Projects Q/A
Posted
I simulated this power supply so that I can see if there is any problem, before creating this. I'm a little pernickety in my works ;D .
OK , so I'll create it!! I'm so thankful for your support, like you!