Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
|
In Reply to: I meant for the initial chargeup of the cap posted by Maxamillion on November 17, 2015 at 12:31:16:
of an alkaline 9V battery and it's typically 1-2ohms, so maybe this isn't a big issue after all. At 1ohm, with a .02ohm cap the max current would be 9/1.02 = 8.8A. Still, I might want another ohm or two in there to slow it down even further for reliability's sake.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- I just looked up the internal impedance - Maxamillion 12:41:03 11/17/15 (9)
- RE: I just looked up the internal impedance - Lew 13:45:18 11/17/15 (8)
- A Discharged Cap is a Short Circuit to DC - Maxamillion 17:53:36 11/17/15 (7)
- RE: A Discharged Cap is a Short Circuit to DC - Lew 06:58:43 11/18/15 (5)
- +1 Use larger battery to precharge. n/t - tweakmenow 04:43:19 11/19/15 (0)
- RE: A Discharged Cap is a Short Circuit to DC - Maxamillion 08:27:05 11/18/15 (3)
- RE: A Discharged Cap is a Short Circuit to DC - Lew 10:15:57 11/18/15 (2)
- That's .047F, same as 47,000uF - Maxamillion 10:23:42 11/18/15 (1)
- RE: That's .047F, same as 47,000uF - Lew 12:25:16 11/19/15 (0)
- Here's a Startup Simulation in LTSpice - Maxamillion 18:32:12 11/17/15 (0)