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Recent content by Sceptre

  1. S

    Dish network sattelite question

    do a hard reset on the receiver (not sure what model you have) then set the receiver to signal strength...go outside and have someone watch the screen. tune the receiver in to the right bird and you should be all set. also, check cable from dish to make sure its just one run directly from...
  2. S

    Half Bridge Driver

    i'm using 2 IR2104's to drive a H-Bridge.....the 2104's output 15v to turn on the bridge. I was just checking the circuit to make sure everything was in order, i checked the current draw between the 2104 and the H-Bridge...there is no current draw. Is this normal? the signal goes to +15vdc...
  3. S

    Electronic Hearing protection

    only thing i can see would be a filter of specific frequencies. would not always be reliable depending on who you're talking to or what machinery is in the background
  4. S

    Isolation Problem

    i have designed an aluminum case for a project i'm doing and I have two power supplies within that case. I have a computer PS to allow easy plug-in, and it had all the voltages I needed. and I also have a 48vdc power supply. The problem is, the case of the computer PS is earth ground, and the...
  5. S

    120vac Detection

    anyone know a small circuit that can detect 120 or 240vac. i want to detect the voltage, and when its on and off, do specific events. TIA
  6. S

    PLC Forums

    anybody know any good PLC forums? TIA
  7. S

    Cool TV experement!

    HAHAH...awesome...have to give that a try :lol:
  8. S

    Adapter Question

    the original adapter is center postitive...the replacement i got there is center negative...can't i just cut the wires and reverse them?
  9. S

    Adapter Question

    my modem requires a 12vdc @ 1A power supply (wall adapter). Can i replace that adapter with one rated at 12vdc @ 1.3A?
  10. S

    Adapter Question

    hey guys, just finished moving apartments, i seem to have misplaced the adapter for my toshiba cable modem. The adapter was 12v@1A (and that is whats written on theback of the modem). only adapter i have kickin around is a [email protected]. The modem will only draw what it needs right? this is...
  11. S

    Data Acquisition Card

    hey guys, I'm using a data acquisition card to pull open a TTL relay...the relay required 30mA but my outputs are rated for 20mA max....this is going to be in use constantly so i would rather not strain the outputs. Is it possible to tie two outputs from the card together to double the...
  12. S

    LM317T

    hey guys..i'm using a lm317 to regulate a voltage. i was hoping to go from 48vdc to 10vdc...can i do this with the lm317? only thing i seen in specs was input-output diff max was 40 would this setup be ok? TIA
  13. S

    Inductance Problems

    from looking at the datasheet, i was under the understanding that this was a ttl mosfet :?
  14. S

    Inductance Problems

    Hey optikon, thanks a million for the info. As for the time of the circuit being on. Sometimes it switches 4 times within 2 seconds (i have on and off time set to 200mS) and other times it pulses 8 times within 2 seconds (time set to 100mS). Between sets of pulses, it can sit for hours or...
  15. S

    Inductance Problems

    thanks a million for all the reply's. The mostfet I'm using is IRF540N. Its rated at 100v 27a. any more information on this would be greatly appreciated.
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