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Recent content by root2hell

  1. R

    [General] I2C communication Reading from a Temperature sensor LM75.

    here is the zipped file of source code.
  2. R

    [General] I2C communication Reading from a Temperature sensor LM75.

    i am trying to read temp sensor LM75(7 bit Slave addr=0x48) that support I2C from a microprocessor mpc8308 using evaluation kit i.e. mpc8308rdb. I have initialized i2c module by writing FDR Resistor, I2CCR resistor with (Enable i2c module,Disable interrupt, Transmit mode, Broadcast disabled)...
  3. R

    0-30 VDC Stabilized Power Supply

    minimum output of LM723 is 2V which will be down to 0 using circuit as shown in schematic and how much current fluctuate if temp changes from 40 Degree to 5 Degree?
  4. R

    0-30 VDC Stabilized Power Supply

    My PCB Design for Previous Circuit is about to Ready. and i am thinking of build the same supply using LM723.
  5. R

    0-30 VDC Stabilized Power Supply

    i cant find anywhere simulation model of LM723 Voltage Regulator so cant simulate...and i cant write Pspice model for it... anyone can suggest me something.
  6. R

    0-30 VDC Stabilized Power Supply

    i have sent it for PCB designing but i am modifying my design for 1A. i want to build same unit but cheap with 1A current limit. - - - Updated - - - this circuit looks less complicated and cheap...
  7. R

    0-30 VDC Stabilized Power Supply

    i need a maximum current of 1A.
  8. R

    0-30 VDC Stabilized Power Supply

    yes of course i have removed that transistor from my list.. i am gonna use only one 2N3055. but i am bit confused about transformer and rectifier rating for my circuit.
  9. R

    0-30 VDC Stabilized Power Supply

    you're right... actually i need a 20-25W power supply with 0-28V regulation. so i thought 50VA transformer will be okay. is 50VA okay for 20W power supply. or this ckt is not efficient for what i need. - - - Updated - - - i have seen there are other cheap power supply circuits . i m not...
  10. R

    0-30 VDC Stabilized Power Supply

    so here is my pre final schematic for 20W 28 V power supply. i have to make this power supply cost effective so any suggestion will be highly appreciated. Thanks Audioguru for your explanations. - - - Updated - - - i am thinking of using 1. 50VA, 2A transformer 2. 50V, 10A Bridge Diode...
  11. R

    how to make Pspice model with the txt file.

    you must go through this. https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CBwQFjAA&url=http%3A%2F%2Fwww.onsemi.com%2Fpub%2FCollateral%2FTND6045-D.PDF&ei=PnY3VPXeA4qF8gW294DgCg&usg=AFQjCNGywZEqUHsBXSdtnfW7EK5iMKMz0Q&bvm=bv.77161500,d.dGc
  12. R

    0-30 VDC Stabilized Power Supply

    Thanks a lot for the explanation.
  13. R

    0-30 VDC Stabilized Power Supply

    should i lower RSENSE to about 0.27ohm for 30V 1A power supply. coz i am getting ripples at setting current POT to minimum current. - - - Updated - - - i have replaced that diode with R25 1k resistor.
  14. R

    0-30 VDC Stabilized Power Supply

    what is the use of R29, R30 and R25. what should be reduced rating of transformer and rectifier if a want output current of maximum of 1A.
  15. R

    How to find Pspice model for the ic SN74LVC2G53 by texas instruments.

    Just mail them and ask for PSPICE model.
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