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  1. logan_dslasher

    BT-693 speaker system

    she san barely remember where but she said it's somewhere on the speaker.. she said she probably saw it on the speaker with the volume control..
  2. logan_dslasher

    BT-693 speaker system

    aw! i missed Ante's second post.. nope! there's no fuse. that's the first thing i looked for.. BTW whats a wall wart? it has a small PCB inside it, something like 2X2 inches or so.. its where the volume switch and control is placed. the speaker system has two speakers, just like in the picture...
  3. logan_dslasher

    BT-693 speaker system

    it uses 220V. i have tried to set its volume to the max but haven't tried touching its inputs.. i'll do that later. i don't think i have a sound card, there's this oscilloscope and freq analyzer i found on the eLab.. and when i transferred the program to my pc an error message flashed.. it said...
  4. logan_dslasher

    BT-693 speaker system

    Hi Ante! i took it to the shop where i bought it for them to have a look at it.. i found out that its not under warranty because it is only a free accessory (pretty good technique - when buying a computer package, all you have to pay is the CPU and monitor, the rest is FREE; though the price is...
  5. logan_dslasher

    BT-693 speaker system

    when i got home last night, my mother was waiting at the porch. she said that the computer blew up!! i found out that it's only the speaker that got damagd. she said it made a popping sound as soon as she plugged he AVR. she said the saw something sparked.. it's still under warranty (i think)...
  6. logan_dslasher

    LOGIC GATES project

    the problem i encoutered with my inverter was due to the damaged IC.. remember, when i was working on the whistle responder circuit, i used some of the left over parts in making this project.. after i solved the inverter problem, the OR stage malfunctioned.. it's output was always low.. i have...
  7. logan_dslasher

    LOGIC GATES project

    i have spent all day working on the project. at the very last stage of assembling it, i encountered a problem. the inverter input LED doesn't turn ON even if i apply a high to it.. i've traced evferywhere for the fault but found none.. maybe, i'm just too exhausted, so i tried to unwind by...
  8. logan_dslasher

    LOGIC GATES project

    hi Steven! who doesn't envy audioguru? you want him to be your teacher? why, i'd like him to adopt me!!  ;D  ;D  ehehehe.. i'll have the papers ready, audioguru ..  :D
  9. logan_dslasher

    LOGIC GATES project

    I got it finally! its working now!  8) at first i wired it like that shown in the "tutorial" using a 4081.. it have varying results...i noticed that the 4081 was hot..  knowing that the pins' layout of a 4081 and a 4071 is the same, i repaced the 4081 with a 4071.. it worked! then i also wired...
  10. logan_dslasher

    LOGIC GATES project

    ah, alright, audioguru.. i'll just leave them there.. i'll just copy the wiring as is.. assuming that i can make the circuit work, how should i connect it to another IC? i syill have to use an OR (4071) and an inverter (4069) how should they be connected. in a 4071, does it have the same wiring...
  11. logan_dslasher

    ? Displaying symbols

    try these.. they are simple yet very helpful.. Welcome to eLab, by the way! Enjoy!!! http://www.electronics-lab.com/downloads/schematic/003/index.html http://www.electronics-lab.com/downloads/schematic/006/index.html
  12. logan_dslasher

    ? Displaying symbols

    i have located the omega under subset of "letterlike symbols".. MSWord gives a very limited symbols -electronic- you can use.. you can also use the Equation Editor under "costumize.." in the Tools menu.. look for it there.. i think the best you could do is find an electronic software that has...
  13. logan_dslasher

    LOGIC GATES project

    so, i should still connect them?
  14. logan_dslasher

    LOGIC GATES project

    hi guys.. i think i found an answer to my problem.. i was looking for the pin assignemnt of a 4081 and this turned up: http://www.doctronics.co.uk/4081.htm#pins i just ha a question: what are the capacitor and transistor for? is it alright if remove them? and how about the unused gates? i...
  15. logan_dslasher

    LOGIC GATES project

    thanks for the additional resources steven! if i supply the circuit () with 12V, what should be the resistor values? i can't come up with a good schematic on how to wire the three IC's (4081, 4071, 4069)together.. ill try it on my breadboard later.. am still busy with lots of things right...
  16. logan_dslasher

    LOGIC GATES project

    hello steven! can i wire it like this? i'll just replace the IC with 4081.. can i use up to 12V? what should be the resistor values then?
  17. logan_dslasher

    help needed

    hey anu! i think you should tell a bit about how far have you gone in your study of electronics in order to assess what project is suitable for you..
  18. logan_dslasher

    LOGIC GATES project

    here's what i did.. i have a 4081 (quad 2-input AND).. pins 1,2,3 is AND1 456 is AND2 and so on.. pin7 is ground and pin14 is +9V..  I have a LED placed in pins 3&4 ('im really not sure if it should be placed there..) then I use two wires to connect pins 1 and 2 to pin14.. theoretically (my...
  19. logan_dslasher

    LOGIC GATES project

    i thought i got the whole thing figured out!  ??? where would i put the LED? the supply? i am using a 4071 (OR) a 4081 (AND) and a 4069 (inverter).. the output X is = AB + B' i have the inverter connected to input 2 of AND. outputs of AND and inverter are the inputs for the OR.. i got...
  20. logan_dslasher

    SAFETY first!

    have you removed a small rotten part on a banana using a spoon? that's how my index finger looked a while ago.. i was working on an AC/DC converter. i was drilling (using a hand drill) a hole for  the fuse on its chassis when the drill bit suddenly got stuck and the aluminum box spun with the...
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