Programmable power supply design using PIC16F877

[lithium]

hi all,
i need to design a power supply for sourcing high current. the supply should be current controllable through a matrix keyboard interfaced to the PIC i.e. the supply should be capable of sourcing any current entered through the keyboard. An LCD interfaced to PIC should display the voltage, current & other options.

any design ideas & books for reference would be very helpful.

thanx in advance.

Lithium.

 

[neuralc]

Hi,

One good appnote for current sensing: **broken link removed**

For Voltage sensing, is quite easy.

For control, you must use switch mode power supply (browse the Web)

NeuralC

 

[tjalps]

Yes, this all looks Ok. But you must be aware that at lower 10% of meassurement area you will get nonlinearity of meassured results.

Best regards!

 

[Fragrance]

Pic16F877 based power supply

Hi friend,

Find this design based on 16f877 published in epe dec 2000 the code was written in tasm assembler but you convert it for mpasm by changing the .org and .equ to org and euq respectivly

and also ask some one who upload the dec 2000 epe on forum

regards
Fragrance