Hi, I have a 12 volt dc circuit that has two (2) separate 12 volt positive inputs and two (2) separate 12 volt negatives. Both positive and both negative inputs are from the same 12 volt vehicle source (circuit 1 is switched via my vans ignition), (circuit 2 is manually switched via a toggle switch) and both are used to feed a 12v to 5v USB converter at 1.5 amps which powers an Xplore C+1 Dash Cam.
I need ALL of the feeds (the 2 Pos + the 2 Neg) to be isolated from each other so that one circuit (supply) does not feed the other at ANY time.
Should I put Diode protection on ALL four leads? (2 positive and 2 negative)
The normal circuit (1) is powered via the the ignition and is for my Dash Cam when the van is in motion.
The second circuit (2) is powered from the fuse box (currently switched on/off by toggle) which is going to be replaced with a remote controlled switch, so I do not need to enter the van to switch the toggle on/off for downloading the recorded images.
The Camera uses WiFi to download the recordings to cellphone and or tablet via an Android App and decode the recordings and GPS data.
Which can not be done on a PC as the camera operates on its own specialised Android App and is painfully slow to download and convert each 3 minute video recording. In order to retain the GPS data the Android App must be used. Removing the mini SD card and transferring the video to PC does not give the GPS data.
I will be replacing the toggle switch with a remote controlled switch, which I have. But it ONLY switches the NEGATIVE circuit leaving the Positive uncontrolled (hot) and this is my concern with back feed.
I WILL be using diode protection to stop the 12 volt positive feeding back into the ignition and vice versa into the remote switch via the fuse box. I feel that I should also be using diode protection on both of the negative sides as an extra precaution.
Should I use diode protection on both the positive and the negative leads (of which there are 2 of each) or just the 2 positive inputs?
To date I have spent in excess of $120,000 New Zealand dollars in buying this van and having it professionally converted so I can drive from my wheelchair and I can not afford to blow any of the multitude of computers up that control its many standard and additional mobility related functions.
I do not need any additional hardware as I have everything that is needed and a working circuit that is manually toggled on/off but is un protected from current/voltage feed back.
All I need is advice on using Diode Protection on both Positive and Negative inputs. Your thoughts and views please.
Many Thanks Ray.
I need ALL of the feeds (the 2 Pos + the 2 Neg) to be isolated from each other so that one circuit (supply) does not feed the other at ANY time.
Should I put Diode protection on ALL four leads? (2 positive and 2 negative)
The normal circuit (1) is powered via the the ignition and is for my Dash Cam when the van is in motion.
The second circuit (2) is powered from the fuse box (currently switched on/off by toggle) which is going to be replaced with a remote controlled switch, so I do not need to enter the van to switch the toggle on/off for downloading the recorded images.
The Camera uses WiFi to download the recordings to cellphone and or tablet via an Android App and decode the recordings and GPS data.
Which can not be done on a PC as the camera operates on its own specialised Android App and is painfully slow to download and convert each 3 minute video recording. In order to retain the GPS data the Android App must be used. Removing the mini SD card and transferring the video to PC does not give the GPS data.
I will be replacing the toggle switch with a remote controlled switch, which I have. But it ONLY switches the NEGATIVE circuit leaving the Positive uncontrolled (hot) and this is my concern with back feed.
I WILL be using diode protection to stop the 12 volt positive feeding back into the ignition and vice versa into the remote switch via the fuse box. I feel that I should also be using diode protection on both of the negative sides as an extra precaution.
Should I use diode protection on both the positive and the negative leads (of which there are 2 of each) or just the 2 positive inputs?
To date I have spent in excess of $120,000 New Zealand dollars in buying this van and having it professionally converted so I can drive from my wheelchair and I can not afford to blow any of the multitude of computers up that control its many standard and additional mobility related functions.
I do not need any additional hardware as I have everything that is needed and a working circuit that is manually toggled on/off but is un protected from current/voltage feed back.
All I need is advice on using Diode Protection on both Positive and Negative inputs. Your thoughts and views please.
Many Thanks Ray.
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