Recent content by masterleous

  1. masterleous

    [Needed]: 40816229 IC Datasheet

    Thanks Hotwaterwizard.............alot for the datasheet and other information related to this IC..........
  2. masterleous

    [Needed]: 40816229 IC Datasheet

    Hi all, i need some help, i will be very greatfull to you, one of my nephiew has a remote control toy car, which is operated at 27MHz frequency, (and ofcourse it is MADE IN CHINA) Inside the Remote Control a few components are their, 3X  S9018 Transistors Few Resistors, Inductors...
  3. masterleous

    Help me in Building a UPS

    No reply from any user............  :'(...................
  4. masterleous

    Help me in Building a UPS

    Hello all users, I need some help in my project of UPS, i found some basic conecpt of UPS on NET, which is basically a 12 volts to 220/120 VAC Inverters, these types of circuits have a big problem with them, when a battery is fully charged, UPS give 220 VAC, after some time when Battery goes to...
  5. masterleous

    Need help in using Darlington Pair IC ULN2003A

    Hello Guys, I need some help in using ULN2003A Darlington Pair Array IC in my project, let me explain little about my project. I want ULN2003A IC to drive 6VDC Relays, and my logic inputs are CMOS, here the input for ULN ic is coming from BCD-7 Segment IC 4511, and the output of ULN2003 is...
  6. masterleous

    Want to make Auto Range Power Supply.

    Thanks all for your replies, but i need some more help about switch mode power supplies.
  7. masterleous

    Want to make Auto Range Power Supply.

    I know that many electronic devices have auto range power supply. But, i want to make my own Power supply, just like a project of 0-30V Variable Power Supply in This site. Can anyone know about it. Thanks
  8. masterleous

    Want to make Auto Range Power Supply.

    Hi all, I want to make my Auto Range Power Supply like Input : 85 - 250 VAC Output : any DC Voltage like 12VDC 2-3A Can anyone have have an idea about this.? Thanks
  9. masterleous

    Want Datasheet of Large 7 Segment LED Display

    Hi, Want Datasheet of Large 7 Segment LED Display. The 7 segment ms t be of large size upto 10 to 12 inches.. Can any one have the information about it's power consumption with specification.
  10. masterleous

    design of a variable temperature control ranging from 5deg. to 40 deg.C

    Hi, Try to check out a datasheets of two ICs 7107 and 7106......both will be used ot measure Temp....... one ic 7107 use +5 and -5 supply and other use 9V.........so u can get 5v and 9V from a 12v .........by Voltage Regulated Ics........just like 7809
  11. masterleous

    How do I start off for a Robot

    Hi Kevin, you are right that it is difficult to program through Assembly Language...........but for complete automation u needed a design that perform an operation for control by its own calculation not by HMI............... Although for beginner, this is a better idea to make C Prog at first...
  12. masterleous

    Help: I want to build my own Intercom.

    Here is the Pic of PreAmplifier........
  13. masterleous

    Help: I want to build my own Intercom.

  14. masterleous

    Want to use LED Dot Matrix Board

    Hi, Yes u are right........ I want some help to drive LEDs.............can anyone have any idea........ I think the minimum frequency for driving it should be greater than 5-10 K Hz...........am i Right?
  15. masterleous

    How do I start off for a Robot

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