# Capacitor Basic

Discussion in 'General Electronics Chat' started by eknow, Jan 30, 2007.

1. ### eknow Thread Starter New Member

Jan 30, 2007
2
0
Hi.. struggling with basics
A capacitor stores charge.. right.. so if I charge a capcitor to some high voltage and then if sb holds it accidentally would he/she get a slight shock from the charge present in the capacitor..

Oct 14, 2005
1,198
4
Yes.

567890

3. ### SANJ New Member

Jan 27, 2007
1
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OF COURSE.WHEN SB HOLDS A CHARGED CAPACITOR, THE STORED VOLTAGE IN IT GETS DISCHARGED THROUGH THE BODY OF THE PERSON WHO HOLDS IT. IT IS THEREFORE TAKEN AS AN SAFETY PRECAUTION TO DISCHARGE AN CAPACITOR BEFORE DE-SOLDERING IT.

Dec 23, 2006
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5. ### Mazilla New Member

Jan 31, 2007
2
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If you accidentally charge the capacitor by some high voltage and sb hands this one he/she becomes very happy .

note that capcitor is charged better throught a diode.
do the next:

Code ( (Unknown Language)):
1.
2.                that's diode
3.    <----------|<|---------------
4.                                 | +
5.                                ---
6.    ~240                        ---    <-- that's cap. (not less than 10uF)
7.                                 |
8.    <-----------------------------
9.
10.
To avoid short circuit in AC line use the resistor in serial with diode.
Capasitor will be charged up to 240 * sqrt(2) = 340 V. It should be enough to affect the result.

I recommend to use ampermetre to monitor the current value through victim of your experements (not less than 0.1 amps).

P.S.: plz don't do this

6. ### eknow Thread Starter New Member

Jan 30, 2007
2
0
thanks...
340V is the rms value right?

7. ### nanobyte Senior Member

May 26, 2004
118
1
What value of resistor should be used in series with the diode? How would you determine the right value?

8. ### kubeek AAC Fanatic!

Sep 20, 2005
4,688
806
No, the 340 is the peak value, because there is no discharging between the cycles.