Re: [EVDL] Current limiting

rg; ev-requ...@lists.evdl.org Sent: Tuesday, June 7, 2016 8:40 AM Subject: Re: [EVDL] Current limiting That would be an extremely short lived event. Once current starts to flow, delta voltage will decrease rapidly. > On June 7, 2016 at 9:33 AM paul dove <dov...@bellsouth.net> wrote: >

Re: [EVDL] Current limiting

Bill Collins via EV wrote: The resting voltage of a lead acid battery is significantly lower than the voltage required to charge it. For example: a fully charged 12 volt battery has a resting voltage of 12.6, but will not draw much current unless you apply 13.5 volts or so. This means that when

Re: [EVDL] Current limiting

vdl.org > Sent: Tuesday, June 7, 2016 7:20 AM > Subject: Re: [EVDL] Current limiting > > The resting voltage of a lead acid battery is significantly lower than the > voltage required to charge it. For example: a fully charged 12 volt battery > has > a resting voltage

Re: [EVDL] Current limiting

v-requ...@lists.evdl.org Sent: Tuesday, June 7, 2016 7:20 AM Subject: Re: [EVDL] Current limiting The resting voltage of a lead acid battery is significantly lower than the voltage required to charge it. For example: a fully charged 12 volt battery has a resting voltage of 12.6, but will no

Re: [EVDL] Current limiting

The resting voltage of a lead acid battery is significantly lower than the voltage required to charge it. For example: a fully charged 12 volt battery has a resting voltage of 12.6, but will not draw much current unless you apply 13.5 volts or so. This means that when you connect two batteries

Re: [EVDL] Current limiting

> -Original Message- > From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Gary Krysztopik > via EV > Sent: Monday, June 06, 2016 9:26 AM > To: Electric Vehicle Discussion List > Subject: Re: [EVDL] Current limiting > > Thanks guys! I have a bag of in rush curr

Re: [EVDL] Current limiting

EVDL Administrator via EV wrote: I've never tried this, but I've heard (probably here on the EVDL) of using a PWM DC motor controller for this purpose. You'd probably need an inductor in series with its output to simulate motor inductance, so the controller's current limiting circuit would have

Re: [EVDL] Current limiting

Cor van de Water via EV wrote: Why don't you try to connect the two first and see if there is a problem that you want to solve, instead of first building a solution and then finding out that it is not needed at all? That's a good idea. If these are big low-resistance AGMs at significantly

Re: [EVDL] Current limiting

Subject: Re: [EVDL] Current limiting Mike Nickerson wrote: ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http

Re: [EVDL] Current limiting

, distribution, or copying of any part of this message is prohibited. -Original Message- From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Gary Krysztopik via EV Sent: Monday, June 06, 2016 9:26 AM To: Electric Vehicle Discussion List Subject: Re: [EVDL] Current limiting Thanks guys

Re: [EVDL] Current limiting

I've never tried this, but I've heard (probably here on the EVDL) of using a PWM DC motor controller for this purpose. You'd probably need an inductor in series with its output to simulate motor inductance, so the controller's current limiting circuit would have time to do its job. David

Re: [EVDL] Current limiting

Mike Nickerson wrote: Hi Lee, I don't think that is how in rush current limiters work. I use them to protect my DC-DC converter caps so they don't get whacked with a high in rush current when the connection is first made. You're right. My explanation was not at all clear. I was staying up

Re: [EVDL] Current limiting

Thanks guys! I have a bag of in rush current limiters from many years ago that I never used and I like the halogen bulb idea. I have 400ah cells (4.8kwh) in our RV with 1kw solar and another 10kwh in our truck that I want to connect for more capacity. Trying to avoid sparks and melting and all

Re: [EVDL] Current limiting

Hi Lee, I don't think that is how in rush current limiters work. I use them to protect my DC-DC converter caps so they don't get whacked with a high in rush current when the connection is first made. https://en.m.wikipedia.org/wiki/Inrush_current_limiter Mike On June 5, 2016 10:19:55 PM

Re: [EVDL] Current limiting

Mike Nickerson via EV wrote: If the long term current draw will be less than 10A or so, you could use an in rush limiting resistor. That is a resistor with a negative temperature coefficient. When cool, they have a very high resistance. As they heat up, their resistance drops. This is

Re: [EVDL] Current limiting

If the long term current draw will be less than 10A or so, you could use an in rush limiting resistor. That is a resistor with a negative temperature coefficient. When cool, they have a very high resistance. As they heat up, their resistance drops. See an example at:

Re: [EVDL] Current limiting

A switchmode charger or a big resistor. I have used radiator elements and light bulbs. One solution is expensive and efficient the other isn't. jsl John Lindsay > On 6 Jun 2016, at 6:07 AM, Gary Krysztopik via EV wrote: > > Does anyone have any cheap tricks for regularly

[EVDL] Current limiting

Does anyone have any cheap tricks for regularly connecting two large 12 vdc packs together (one stationary and one mobile) and limiting inrush current when they are at different SOC? They both have huge current capability but I need it for energy vs power so one has small wires and fuses.