115 V car outlets

transients /will/ kill it.

NT

BTW, I did carefully check that my drawing matches their wiring WRT the receptacle Ground. Note that they have one side of the AC line = ground and the other at +HV, then the other side is connected to ground and the original line to +HV. This was a decision they made, and it's not at all like our usual AC wiring, where the Hot line swings from +HV to -HV, with respect to Neutral, which ideally is quietly sitting at ground. Maybe they made this decision to save components in the driver and fault circuitry, or maybe in the HV feedback circuit.

Ahem, I have not been brave enough to run any of my electronics devices from this inverter. But it is a marvel of simplicity and low-cost components.

But it's safer than plugging a $600 phone into a $1 car USB adapter.

What if you just move that 1 ohm resistor to go between ground and neutral?

ship are also wired like that and they have a meter to show if there is any leakage from either side to ground

I guess it also means you won't have any DC that could promote corrosion

-Lasse

You would think. My laptops won't work with a 150 watt inverter which said 125 watts *inside* the package. If your laptop draws 95 watts you need a lot from from the inverter because of the inefficiencies. They all seem to play games with the specs much like the rated power output of amplifiers.

Or just make sure the battery is topped off by leaving it plugged in for a while without powering up the computer.

some cars are smart enough to have ignition switched outlets and/or low voltage cut outs

-Lasse

Or if it's an electric hybrid it might start the gasoline engine automatically and murder you with CO.

Den mandag den 25. maj 2015 kl. 20.41.18 UTC+2 skrev Spehro Pefhany:

you don't want to run a car in a closed garage but modern cars with catalytic converters make very little CO

-Lasse

I have a cheap "75 W" inverter that appears to not do anything with the

I ran the external power brick for an old Toshiba laptop from a 216 V DC battery stack once, just to see what would happen. It appeared to work, at least for several minutes, and seemed to have lower ripple on the low-voltage DC output. I *did* chicken out and use a tail light bulb for the load, rather than the laptop.

Matt Roberds

here the majority of outlets don't have ground

if the first thing inside is a rectifier it should work just fine on DC

-Lasse

I've never seen UVLOs on accessory outlets but some are switched. They're usually labled ""Acc" or "+12V" instead of "Cigar". I had both, almost next to each other, on my Ford Ranger.

--Keith

I meant to add that the "ACC" outlets tend to be fused much lower (to take the stress off the ignition switch).

Den tirsdag den 26. maj 2015 kl. 00.11.00 UTC+2 skrev krw:

I'd expect them to be via a relay

-Lasse

I wouldn't. Relays cost real money and same problem esists with a relay.

Den tirsdag den 26. maj 2015 kl. 01.30.50 UTC+2 skrev krw:

afaict recent toyotas have an ACC relay powering the outlets each fused for 15A

-Lasse

Cig lighters can draw 10 or more amps. They are often on a 15 or 20 amp fuse. This much current is not typically switched through the key switch as it would require it's own contacts. Instead multiple relays are used for a variety of circuits preserving the contacts in the key switch.

That's the whole point. Cigarette lighters are usually unswitched. AUX jacks are switched.