masterleous

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

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, Capacitors................ and of course their is one IC (14 pin), The printed numbers on In are TX-2 40816229 I try to search about this IC, at first i thought it is a CMOS IC of CD4081.......but found me wrong........... as CD4081 - pin 14 is VCC and pin 7 is Ground........ And at this IC (mentioned above) has -ve supply connection of Battery at pin 14....... I am so much confused about this IC, if anyone knows about it, having datasheet of it................ Thanks, masterleous

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

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 its 50%, than UPS give 180-190 VAC, and when battery goes to it minimum, UPS give less than 160 VAC. So UPS is only efficient when battery is fully charged. I found some ideas from net of UPS continuously giving 220 VAC till battery goes to 30-40%, but not find any circuit of that type of UPS. Any circuit idea/schematic.......... Thanks, masterleous

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 connected with 7 Relays, The relay's Normally Open Contact is used to drive 200V Circuitry. Please help me what is going wrong.......... Any new idea will be helpfull for me. Thanks

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

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

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

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.

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

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 than switch to Automation through MicroProcessor or Microcontroller which is depend on user and it's robot application.......

Here is the Pic of PreAmplifier........

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?