Recent content by mozikluv1

  1. mozikluv1

    Voice-Activated Door Opener

    hi guys, the voice activated switch has certain drawback like when your voice is not of the same pitch when you have recorded it. in case you have a hoarse voice or use a high pitch or shouting, it won't be able to recognize your command. just like one of the features of a cellphone on voice...
  2. mozikluv1

    Transistor tester

    hi hearmewell, nice user name you've got. all the problems encountered in building this project has been addressed in this forum. the datasheet you were asking is also here. browse thru all the Q & A here. good luck
  3. mozikluv1

    about "25w mosfet audio ampfilier"

    hi thanhyuse, i don't know how far you are into electronics, but base on your question i could probably presume you are a real beginner. if that is the case my friendly advice is to look for circuits not using mosfets as the output stage and using single rail supply. but if you insist in...
  4. mozikluv1

    Timer help

    ;)hi, since you need a long interval the accuracy of using the 555 is questionable since i believe the 555 was not designed for this although it can still be used. try using a programable timer ic like the CD4536 or the CD4541 w/oscillator. you can program this as long as 36hrs. :)
  5. mozikluv1

    Diodes for Infrared Gate

    :)hi, most infrared LEDs have a high current rating of 100ma. however the supply voltage is not posted, even if the Vcc is 12v it would supply 0.12ma. better do a google search for "infrared LEDs" to find the appropiate led. ;)
  6. mozikluv1

    Transistor tester

    :)hi there, it seems a few members have a problem having this project work. my xperience when i first built this project cost me 2 damage CD4027. the most common problem is the damage CMOS. another member was asking if the series/parallel signal diode (IN4148) is presented correctl in the...
  7. mozikluv1

    Need Datasheet for TA8680N

    hi amigo, it seems that all your request for datasheets have not been asnwered. where are those parts used. those parts could probably been discontinued thats why you could not find the datasheet. :)
  8. mozikluv1

    Timer Circut Help

    :)hi, to simplifiy, why dont you use an SCR to turn on the relay. once the SCR is turned on it will remain on until such time you cut off the power. all you have to do is place a timing circuit to the gate of the SCR. :)
  9. mozikluv1

    Transistor tester

    :)hi, try to check your foil layout, there might be some short or there is a mistake in making the layout. also you might have damage the CMOS flip flop or its defective. remember that is static sensitive device. ;)
  10. mozikluv1

    Datasheet for TA8144P

    :)musta kasamiko, try http://doc.semicon.toshiba.co.jp were is that used, i might be able to help you out kabayan :-*
  11. mozikluv1

    Led display Digital Voltmeter question

    :)hi bonanz, sorry i was not able to complete my reply, one way to solve your -5v swupply source is to use a 10v transfo. this is how you do it, 1. series 2 resistors 2. shunt the resistors across the rectified output 3. from the junction of the 2 resistors, this is where you tap your ground...
  12. mozikluv1

    Transistor tester

    :)hi, i hve finished the transistor tester after a long delay and ''I HIGHLY RECOMMEND THIS PROJECT FOR ALL ELECTRONIC HOBBYIST" ;) ;) ;) ;) 8) 8) 8) thanx to this site.
  13. mozikluv1

    Led display Digital Voltmeter question

    :)hi bonanz, you said you would be measuring only positive voltages, now what would happen if you accidentally reverse your probe. wont your voltmeter get burned? i believe one of the reson why this device was designed to have a dual supply is bcoz of that. if you reverse the probe your display...
  14. mozikluv1

    transistors

    :)hi EDY am i correct to assume that you are trying to build an electronic ignition system, well here's a few that you can consider; 1. MJ10008 npn 175w 450v 20A (darlington) TO-204 2. MJ10023 npn 250w 400v 40A (same) TO-3 3. MJ10015 npn 250w 400v 50A (same) TO-3 :) these are motorola...
  15. mozikluv1

    Electronic Stethoscope

    :)hi everybody, i will not try to comment why the author configured U5 that way, but here is a very simple suggestion, try substituting with LM386 for U5, see what happens. if the circuit board had been set use an ic socket, solder wires to it and connect to the appropiate holes on the board...
See more
Top