Microcontroller controlled power supply

[cesurcelik]

hi all,
 
i'd like make  digital power supply,
does anyone have a microcontroller controlled power supply's  schematics and softwares( about 3a-25v)
 
thank you in advance
 

[Zexy]

Hi,
I have the same idea, but don't have time I uploaded some digitally controlled PSU found somewhere in circuit cellars. It was with 8051 familly uC...

http://rapidshare.de/files/16789544/psu.zip.html

[jeanninemtv]

interesting!!!  thankss----

[Wizpic]

Here is another one that a PIC16F84 and you can control it by PC aswell it was pulished in elektor electonics.
 
http://rapidshare.de/files/16819909/Digital_power_supply.rar.html
 
I was in the process of converting it into Proton Basic but never got to finishing it of as ohter work kept me busy
 
enjoy
 
wizpic:o

[bbarney]

I don't suppose you ever thought of finnishing it,I can't make head or tail out of the original code but in proton or pic basic maybe

[Lumos]

Hi,

One finds the origin  

  http://www.tldp.org/linuxfocus/Deutsch/November2002/article251.shtml  

  my variation with PIC into Proteus and Proton+

best regards

[bbarney]

thank's Lumos
I'll give this a try
bbarney

[cesurcelik]

hi,
thank you for  each response ,i appreciated them.

[jeanninemtv]

super interesting gadget!!
 
but, you have any schema & program to program 27xxxeproms  and (important to me) 28XXXeeproms?
 
thanks guys

[Faros]

Hi Jeanninemtv


As you sure know that due to large capacity of 27,28 xxx series , its programmer has to be PC interfaced ...

use the link for the schematic, layout and part list for the Eprom Programmer

you can use this link HERE

Hope that it may help in your important task :cool:

[jeanninemtv]

thanks faros & lumos.
 
good grabber ...
 
 
Hey Lumos,,,
 
ONe question... one suggestion too
 
 
have you tested on board yo' soft.... i tested it on proteus... cool ... workss
 
there's no matter about the connection between of transformer and out of regulated psu..=?
 
the author of the article for AVR says no problem but.-- i need another opinion...
 
 
and second... you dont have any buttom to change the status to HI-Z  (V=0 I=0 )to enable changes on V and I...
 
on the real psu's on my faculty's lab this function is enabled... i think i can put any interruption (rbo i e. ) to make available.
 
 
Good Good Work friend ...
 
thanks

[Lumos]

Hi Jeanninemtv

not only the software works also...the hardware.
(see my picture)

I use tipping over nonlocking keys for it vote the voltage and the current.
(Picture)

being used two Transformer

Powerpart:
Transformer and Bridge Rectifiers
DC IN  Pin 1 = + 30V
DC IN Pin 2 = Case
DC IN Pin 3 = Ground

DC OUT Pin 1= Ground
DC OUT Pin 3 = regulated Voltage

Regulator Part:
9V AC

[Wizpic]

lumos

your power supply looks cool and i like the LED readout one aswell
 
Is the 7 seg meter done using a PC and  in Proton code if so you want to share it with us
 
I shall have agoat getting  the power supply up and built soon, I was going to use your code to contorl a power supply that i have already built up 0-30v 0-10amps (velleman kit) and use op-amp has voltage doubler and basicily replace the pots but your design nice and simple
 
cheers
 
wizpic

[jeanninemtv]

thanks 4 the photo....
 
i still think that the 0V 0A state during the setup of the psu is good...
 
 
i'll make an code and i will send you for review...
 
 
thanks
 
another question...
 
i have a pic proggrammer compatible with epicwin, you know, the 7407 and the transistor on lpt...
 
if i program an pic 18, i can read and erase an program it normally...?  ther;e no problem?
 
thanks

[Lumos]

Hi Wizpic

my voltmeter as an attachment


to jeanninemtv  

everybody is the last adjusted left to himself worth switch on.

pic18 burns my self-made epic without problems

the prog_plug in the shematic is for ICSP with bootloader and level adaptation to rs232 .

bye

[bbarney]

Lumos
I think everybody want's to make your power supply which looks really good in your picture very nice job.is it possiable for you to put all the files in one zip so everything is together and easier to keep track off
thank's

[Lumos]

hi bbarney



 all this is what I have ...


 http://rapidshare.de/files/17023473/Powersupply_complete.rar.html

[bbarney]

Thank's Lumos

[jeanninemtv]

thanks for share !!!

[jeanninemtv]

ok
 
then the 18 series works ok with programmers. ok iwill try i
 
what about test this soft on 16f877a ?

[munaf]

Dear Zexy
Hi,
psu.zip is not available on address blew:
http://rapidshare.de/files/16789544/psu.zip.htm
any one who have this file please send me.
thanks.

[bbarney]

the link works I just tried it

[munaf]

Dear Lumos

Hi

I download schematic of PIC18f252 based power supply.  It seems interesting, but some clarifications are required. I hope you clear them:

1.         Crystal value?

2.         Power transistor No.?

3.         R2 to R17 resister wattage?

4.         if we want to additional current , we add more transistor and what changes will be  made in code?  

5.         PIC18f252 is not available; can we replace it with 16f876?

6.         When we compile the code error will be display***Variable FLOAT_DISPLAY_TYPE** not define?

Please help me

[Lumos]

Hello Munaf

  for your questions

  1.  Crystal20MHz  

2. Powertransistor 2N3055

3. Resistors  250 mW  

4. the transistors with the resistors being included parallel to the other transistors ...

  it has to be wondered whether a multiplier resistor would be advisable at the respective Basis for the purpose of operating point

  5.are available two PWM hardwareoutputs  if this is not a problem

  6.Float_display_type is not a Variable. Is a "Declare" of  Proton+

 to increase the precision

 I hope to  have helped you


 bye

[munaf]

Dear friends
hi,
I upload a basic stamp based digital power suplly link below.
In this suplly used memkey with BS2.
Memkey is very costly, any salution.
try it and enjoy
 
http://rapidshare.de/files/17226384/digital_power_supply.rar.html
 
here is I upload a motorola 68HC08 based digital power supply.
 
http://rapidshare.de/files/17228750/programable_Power_suplly.zip.html
 
 
here is good bench top Power suplly. i make it. it is realy good.
 
http://www.uoguelph.ca/~antoon/circ/ps3010/ps3010a.html

[picstudent]

hello.
 
i changed the processor and burned an 877a....
 
now its working!!

[mechatron]

thanks

[picstudent]

thanks,
 
ì`ll try to make my own board and buttons configuration to use less buttons...
 
thanks a lot lumos

[bbarney]

Have you tried to make those changes Picstudent?

[gevv]

http://www.hemenpaylas.com/download/689261/PIC_POWERSUPPLY_0-25V_0-2.5A.rar.html
pass:gevv

elektor v1  
modification v2 v3

[Wizpic]

Can anybody re-upload Lumos power supply design the one that is all in one has i lost it and want to start work on it again



cheers

wizpic

[bbarney]

here is a link
http://rapidshare.com/files/7799096/Powersupply_complete.rar.html

[Wizpic]

Thanks bbarney   

just what i wanted cheers

wizpic

[sohel]

 

thanks

[raham]

nice powersupply and function generator.Thanx Bbarney

[bbarney]

All the thank's should be directed at Lumos,this is his baby
thank's again Lumos

[sohel]

hello.
 
i changed the processor and burned an 877a....
 
now its working!!

can u share ur 16f877a sorce code where u make change, thanks

[Wizpic]

can u share ur 16f877a sorce code where u make change, thanks

Basicily because it's PDS you change device
I.E Device 18F252 to
Device 16F877A

and that's it PDS very good for this

good luck

wizpic

[sohel]

  I dont know where is my fault. I can find full scamitic diagramme . where to cunnect J2 adc port.  please share full.

please help me

thanks

[Wizpic]

Shoel sorry i don't understand what you mean but here goes anyway  the file contains all the information to build the PSU there are 2 parts the Mother board and the power baord

J2 is the connector for all the push button switches which are not shown on the shcematic common all one side of the push button to +5V and the other side to the pins on J2, I would also use something like a 4K7 resistor on the J2 pins to ground this just stops any interferance in pic

hope that helps

wizpic
 

[sohel]

sorry for my mistake

declare all_digital

its disable adc. thats why i am confused.

thanks

[Faros]

Hi Jeanninemtv


As you sure know that due to large capacity of 27,28 xxx series , its programmer has to be PC interfaced ...

use the link for the schematic, layout and part list for the Eprom Programmer

you can use this link HERE

Hope that it may help in your important task :cool:

[vacsaa]

Help!

I' am declare all input digital.

The tranzisztor is hot.

The board is good?