Power Supply 12bit

[Kabron]

I did Proteus Simulation of the 12bit PSU(I'll upload it later).
It seems that toti is afraid to show the final version as in Youtube.
Only one mode display realized, wrong BaudRates, wrong PS2 protocol, no KBD controll.
Invain to repeat the design. He'd also post Youtube links on pickbasic.org and edaboard with no sources.

[pertican]

I am currently designing the digital part with Mega16.
soon...
Digital part includes :
16 bit analog to digital(Without any converter D/A IC)
glcd 128x64 ks0108.
touchscreen for change outputs.
Thermometer.
fan.
....

[Ichan]

@Pertican, I am confused with your schematic. Is it switching or linear power supply? Where is the connection between AGND and GND? Is that true there is GND connected at the junction of R3 + R4?

-ichan

[pertican]

@Pertican, I am confused with your schematic. Is it switching or linear power supply?

this is linear but you can use switching instead
transformer - rectifier - filter

Where is the connection between AGND and GND? Is that true there is GND connected at the junction of R3 + R4?

AGND = Analog gnd or power gnd
GND = digital gnd

ps: this is old version schematic and i think have problem.

new schematic is here: (attach)
www.sonsivri.com/forum/index.php?topic=37575.msg122376#msg122376
block diagram:
www.sonsivri.com/forum/index.php?topic=37575.msg122450#msg122450

[pertican]

ok!
Digital part v1.0
Attach (Simulation + C Code)
If anyone has new ideas. say to add.

[Ichan]

How about real V / I readings?

-ichan

[pertican]

How about real V / I readings?

-ichan

--------------------------------------------------
In The Analog Schematic
the output of the first OpAmp you can read I/V.
If you see the schematic

(simulation_voltage_control)
Output Of U2B = Vout / 11 (min 0v max 3v or 4v)

(simulation_Ampere_control)
Output Of U2B = Iout (min 0V=0A & Max 4v=4A)


PS: For Simulation TouchScreen In Proteus You Need This Model
http://www.tanu-sha.narod.ru/ts128x64.html

[Ichan]

Hi Pertican,

I mean the microcontroller read the real V / I values so it can do a closed loop control.

I quickly looked into your code, I think it is open loop control - won't give a good load regulation. Sorry if I am wrong.

-ichan

[pertican]

I mean the microcontroller read the real V / I values so it can do a closed loop control.

Yes , We Can Use the ADC, microcontroller.