DIYbanter - HOW DO I KNOW WHAT VOLTAGE A CAPACITOR NEEDS TO DISCHARGE

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February 18th 07 07:50 PM

HOW DO I KNOW WHAT VOLTAGE A CAPACITOR NEEDS TO DISCHARGE

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

Homer J Simpson

February 18th 07 09:00 PM

HOW DO I KNOW WHAT VOLTAGE A CAPACITOR NEEDS TO DISCHARGE

wrote in message
oups.com...
I have a package of 100 capacitors from Radio Shack. there is no
indiction of what capacitors are what?

Ask on sci.electronics.basics

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

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Jerry G.

February 18th 07 09:49 PM

HOW DO I KNOW WHAT VOLTAGE A CAPACITOR NEEDS TO DISCHARGE

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.

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Jerry G.

wrote in message
oups.com...
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

bz	February 19th 07 12:44 PM

HOW DO I KNOW WHAT VOLTAGE A CAPACITOR NEEDS TO DISCHARGE

wrote in news:1171828245.926800.284270
@t69g2000cwt.googlegroups.com:

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 each @ 10 pf
10 each @ 1 pf
5 each @ 7 pf
2 each @ 15 pf
5 each @ 68 pf

5 each @ 151
150 pf

7 each @ 221
220 pf

1 each @ 561
560 pf

1 each @ 103

10000 pf

4 each @ 561
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.

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 :

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.

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

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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

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