Hi Duane,In this video, between positive and ground there is a light(resistance or load) when we measure the potential difference between this two points, we always see 12 volt. In your recent video, Door lock go Grazy 2, when ECU supply the ground, the voltage from 5 volt drops all the way to zero. Over here again you are measuring potenetial difference between positive and ground, resistance being actuator, how come it drops voltage to zero in door lock video, but staying 12 volt in this video
Hi Duane,In this video, between positive and ground there is a light(resistance or load) when we measure the potential difference between this two points, we always see 12 volt. In your recent video, Door lock go Grazy 2, when ECU supply the ground, the voltage from 5 volt drops all the way to zero. Over here again you are measuring potenetial difference between positive and ground, resistance being actuator, how come it drops voltage to zero in door lock video, but staying 12 volt in this video
Good example as to why your switch should always be on the hot side of the load. If your switch was on the ground side of the load and it's off and you go and work at the load site you would get zapped if your body is grounded. It's nice to know that any device or load beyond an open switch is dead.
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Hi Duane,In this video, between positive and ground there is a light(resistance or load) when we measure the potential difference between this two points, we always see 12 volt. In your recent video, Door lock go Grazy 2, when ECU supply the ground, the voltage from 5 volt drops all the way to zero. Over here again you are measuring potenetial difference between positive and ground, resistance being actuator, how come it drops voltage to zero in door lock video, but staying 12 volt in this video
sivucit 5 months ago
Hi Duane,In this video, between positive and ground there is a light(resistance or load) when we measure the potential difference between this two points, we always see 12 volt. In your recent video, Door lock go Grazy 2, when ECU supply the ground, the voltage from 5 volt drops all the way to zero. Over here again you are measuring potenetial difference between positive and ground, resistance being actuator, how come it drops voltage to zero in door lock video, but staying 12 volt in this video
sivucit 5 months ago
Good example as to why your switch should always be on the hot side of the load. If your switch was on the ground side of the load and it's off and you go and work at the load site you would get zapped if your body is grounded. It's nice to know that any device or load beyond an open switch is dead.
midlantic1 8 months ago
@midlantic1 good point, I however thought that many automotive circuits have ground side switches. Is that true?
gst69man 6 months ago
your tutorials are awesome as always! thanks dwayne.
thequake180 9 months ago
Basic tutorials are great.
gratefuldead42022 9 months ago
I found it, silly youtube.
beefystik 9 months ago
Where's part 1?
beefystik 9 months ago