I was looking to see if anyone else had something similar. Found an article back from 2012 and to my dismay it was not resolved.
Here's what I'm thinking: I have a dash cam that used to work really well. Going to replace it in the coming week or two. The problem it experiences is that you start it and it will film for 30 seconds to 2 minutes then shut itself off without going through the shutdown routine. It has a small L-ion battery in it that is supposed to retain memory and assist writing the last file to the SD card when main power is shut off.
For some reason I've grown concerned that there may be some transient voltages causing problems. We all know automotive electronics can be very very noisy. So instead of just buying a new camera and plugging it in I want to plug it into a TVS protected circuit so that there are no transient voltages potentially damaging the new camera. I will be opening the camera later this afternoon to see if I can determine any issues, but I suspect that in the end I'm simply going to buy a new cam and let it go at that. I put a new camera in my wife's car and it will record some files and some files will record as corrupted data, leaving potentially crucial information unattainable. So if I can learn how to solve this transient voltage problem I'll probably put the same thing in my wife's car. Her camera still works. It's just that some files are corrupted.
So where can I learn more about TVS? Do you have any advice? Are they so stupidly simple that I'm overthinking the problem? Avelanche diode? Zener? Capacitor? MOV? I'm certain the power is quite low. The system runs on a 12 volt circuit but supplies typically the same power your cell phone charger produces. Anyone any thoughts? Comments? Suggestions? Directions?
Thanks.
Here's what I'm thinking: I have a dash cam that used to work really well. Going to replace it in the coming week or two. The problem it experiences is that you start it and it will film for 30 seconds to 2 minutes then shut itself off without going through the shutdown routine. It has a small L-ion battery in it that is supposed to retain memory and assist writing the last file to the SD card when main power is shut off.
For some reason I've grown concerned that there may be some transient voltages causing problems. We all know automotive electronics can be very very noisy. So instead of just buying a new camera and plugging it in I want to plug it into a TVS protected circuit so that there are no transient voltages potentially damaging the new camera. I will be opening the camera later this afternoon to see if I can determine any issues, but I suspect that in the end I'm simply going to buy a new cam and let it go at that. I put a new camera in my wife's car and it will record some files and some files will record as corrupted data, leaving potentially crucial information unattainable. So if I can learn how to solve this transient voltage problem I'll probably put the same thing in my wife's car. Her camera still works. It's just that some files are corrupted.
So where can I learn more about TVS? Do you have any advice? Are they so stupidly simple that I'm overthinking the problem? Avelanche diode? Zener? Capacitor? MOV? I'm certain the power is quite low. The system runs on a 12 volt circuit but supplies typically the same power your cell phone charger produces. Anyone any thoughts? Comments? Suggestions? Directions?
Thanks.