ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Safety at heights?
by gfretwell - 04/23/24 03:03 PM
Old low volt E10 sockets - supplier or alternative
by gfretwell - 04/21/24 11:20 AM
Do we need grounding?
by gfretwell - 04/06/24 08:32 PM
UL 508A SPACING
by tortuga - 03/30/24 07:39 PM
New in the Gallery:
This is a new one
This is a new one
by timmp, September 24
Few pics I found
Few pics I found
by timmp, August 15
Who's Online Now
1 members (Scott35), 407 guests, and 19 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 2 of 2 1 2
#30585 10/25/03 08:50 PM
Joined: Oct 2003
Posts: 10
T
Member
Hell-o, New guy here,
just to jump in on the capacitor problem
2 capacitors in series of 1MFD and 2MFD
Scott is correct.
Ct= .666 MFD
Qt = Q1 = Q2
then Qt = Ct x E (assume E=12 VDC)
.667E-6 x 12 = 8E-6

V1 = Qt/C1 = 8E-6/1E-6 = 8 volts
V2 = Qt/C2 = 8E-6/2E-6 = 4 volts

E = V1 + V2 thus 8 + 4 = 12
and thats the way I see it.
Tom


Thomas-F
#30586 10/26/03 11:36 AM
Joined: Aug 2001
Posts: 7,520
P
Member
Welcome to ECN Tom.

Yes, that's the answer. The charge, Q, in coulombs is equal to the product of capacitance and voltage.

The capacitors are in series, therefore each will acquire the same charge. Thus the 1uF capacitor must end up with twice the voltage of the 2uF cap.

Page 2 of 2 1 2

Link Copied to Clipboard
Powered by UBB.threads™ PHP Forum Software 7.7.5