Re: Using your charger in vehicle

Load dump can also occur when loads get switched out of circuit, not just on starting.

3for3 wrote:

Load dump.

The starter motor is an inductive device. You cannot stop current instantaneously in an inductor.

When you stop cranking, the current reverses direction from the starter motor into the vehicle wiring harness, known as "load dump" or "inductive kick".

This reversed current can induce large voltage spikes into the vehicle wiring harness.

Typical tests for automotive devices can involve voltage spikes of 90volts or more usually lasting mico seconds

RCS

"Red Scholefield" <redscho@xxxxxxxxxxxxx> wrote in message news:RSHKe.2986$XL3.337@xxxxxxxxxxxxxxxxxxxxxxxxx

Tim, Exactly what do you mean by "load dump" I've not run into that term
associated with automotive devices. But then I don't have all that much
experience in that specific area.

Red S.

"Tim Wescott" <tim@xxxxxxxxxxxxxxxx> wrote in message
news:11fl945hrrdrmdb@xxxxxxxxxxxxxxxxxxxxx

All I can think of is that they're afraid of load dump; if you design
devices for automotive applications you gotta pay attention to that or
plan on having _lots_ of product returns.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com







--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
.

Relevant Pages

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