Connect with us

HOW DO I KNOW WHAT VOLTAGE A CAPACITOR NEEDS TO DISCHARGE

Discussion in 'Electronic Repair' started by [email protected], Feb 18, 2007.

Scroll to continue with content
  1. Guest

    I have a package of 100 capacitors from Radio Shack. there is no
    indiction of what capacitors are what? I looked on their web site and
    i found out that

    Quantity @ No. of volts??
    60 @ 10
    10 @ 1
    5 @ 7
    2 @ 15
    5 @ 68
    5 @ 151
    7 @ 221
    1 @ 561
    1 @ 103
    4 @ 561 1kV

    What i'm trying to do is make an eletric counter count with out me
    pushing a button or my help what so ever. I only have these items but
    i will take suggestions :

    all items from Radio Shack:
    item No. 272-801 & 275-232
     
  2. Ask on sci.electronics.basics

    Or ask the saleman - after all, "You've got questions, we've got answers (or
    at least dumb looks)"!



    --
    ..
    ..
    ..
    ..
    ..
    ..
    ..
    ..

    --


    --
    ..
    ..
    ..
    ..
    ..
    ..
    ..
    ..

    --
     
  3. Jerry G.

    Jerry G. Guest

    Your list does not make very good sense. General application type
    capacitors are rated for voltage, capacitance, and temperature. These
    parameters have to comply to the design needs.

    --

    Jerry G.


    I have a package of 100 capacitors from Radio Shack. there is no
    indiction of what capacitors are what? I looked on their web site and
    i found out that

    Quantity @ No. of volts??
    60 @ 10
    10 @ 1
    5 @ 7
    2 @ 15
    5 @ 68
    5 @ 151
    7 @ 221
    1 @ 561
    1 @ 103
    4 @ 561 1kV

    What i'm trying to do is make an eletric counter count with out me
    pushing a button or my help what so ever. I only have these items but
    i will take suggestions :

    all items from Radio Shack:
    item No. 272-801 & 275-232
     
  4. bz

    bz Guest

    wrote in @t69g2000cwt.googlegroups.com:
    150 pf
    220 pf
    560 pf
    10000 pf
    560 pf 1kV

    I bought the same assortment not long ago.
    the caps that are un rated as to voltage are probably 100 v or less

    They are all ceramic type capacitors.
    To make the counter count, you will need a circuit that produces pulses (or
    to modify the counter to produce its own 'start counting' pulses.)

    Do you have a schematic of the counter? It would help.

    Do you have any other test equipment like a scope and/or a logic probe?

    Do you want it to count continuously and reset to zero every second?
    every .1 seconds?
    every .01 seconds?

    You need to decide what it is you are trying to do before you can start to
    do it.




    --
    bz 73 de N5BZ k

    please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
    infinite set.

    remove ch100-5 to avoid spam trap
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-