I need some help with ideas to overcome this problem.
I have 2 LCD screens in my car (12 volt) as per this Page. When the car is parked and a DVD movie is watched, all is fine, but when the car is started (cranked), the unit resets completely and the DVD movie starts up right from the beginning. Needless to say it is very annoying. Research done shows these LCD screens need a constant voltage supply, even a 0,8V drop will cause them to reset they told me. Of course I ran the 12V supply wires directly from the car's battery. So this is not a wiring issue, but a unit design isssue - other makes of these DVD units do the same. It is common on these products the suppliers said.
I came up with an idea to overcome this "reset" issue:
Add small 12V battery, with a charger circuit to drive this DVD unit, instead of the supply coming from the car's battery.
My question is, will this work, or have an effect on the car's alternator and other electrics ?
Can anybody supply me a link to such a charger circuit ?
A friend of mine suggested a large capacitor (subwoofer type), to maintain the voltage momentarily when the starter motor turns and the DVD units will stay "up". Not sure if this would work.
Any other ideas or circuits to oversome this problem would be appreciated.
I have 2 LCD screens in my car (12 volt) as per this Page. When the car is parked and a DVD movie is watched, all is fine, but when the car is started (cranked), the unit resets completely and the DVD movie starts up right from the beginning. Needless to say it is very annoying. Research done shows these LCD screens need a constant voltage supply, even a 0,8V drop will cause them to reset they told me. Of course I ran the 12V supply wires directly from the car's battery. So this is not a wiring issue, but a unit design isssue - other makes of these DVD units do the same. It is common on these products the suppliers said.
I came up with an idea to overcome this "reset" issue:
Add small 12V battery, with a charger circuit to drive this DVD unit, instead of the supply coming from the car's battery.
My question is, will this work, or have an effect on the car's alternator and other electrics ?
Can anybody supply me a link to such a charger circuit ?
A friend of mine suggested a large capacitor (subwoofer type), to maintain the voltage momentarily when the starter motor turns and the DVD units will stay "up". Not sure if this would work.
Any other ideas or circuits to oversome this problem would be appreciated.