Jump to content
Electronics-Lab.com Community

cyw1984

Members
  • Posts

    63
  • Joined

  • Last visited

    Never

cyw1984's Achievements

Newbie

Newbie (1/14)

0

Reputation

  1. Which chip can playback normal voice? "one" ,"two"...."three"....."nine".."ten" then can use the mircocontroller to control each one playing back Thx
  2. output 0V mean that common pin 3 and short to GOUND???
  3. Thanks~~But I need add on a NEW shockky or not?? What NEW Op amp should I add on this circuit?? and pin 3 of U3 and NEW op amp connect to where??? thanks
  4. o..I SEE Firstly, i should remove all the part of U1 (11.2V),Right?? I wolud like to use another control voltage reference (DAC) instead of the existing one that is used to control the current and voltage. Also...How to re-arrange the inputs of U3 and add an inverting opamp stage. Can you draw it to me??? Thanks a lot
  5. hello all I want to know the voltag range of
  6. Thanks a lot~~ I need pots to adjust the output voltage because it is use for V reference ..... My AD669 DAC Vref is given by this +-10V
  7. +/-15V power supply using LM317 and LM337 regulator ICs How to designa +/-15V power supply using LM317 and LM337 regulator ICs. Thx The voltage is used to DAC (AD669) I have try to design the circuit.... Is it Right?? [img width=680 height=453]
  8. About Visual Basic6 and RS232 ASCII communication If I want to send the value (ASCII) to 8051 series port VB block input: 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 . . . . . . . 29.93 29.94 29.95 29.96 29.97 29.98 29.99 30.00 RS232 transmit : 0000 0001 0002 0003 0004 0005 0006 . . . 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 If i want display 0-30 with 0.00 (ACSII)..... How can I write the VB software , It need to write 3000 structure????
  9. D to A covertor reference Any High Precision +-10 V Reference?? AD688 is too expensive...any other cheaper??
  10. I am sorry..i have try this circuit...but i don't know it 's not work.. the output is not linear and the output is disorder how to shoot it?
  11. why i can't open the sc,lbr and borad in other PC??
×
  • Create New...