vamanan
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Hi,
I have a data aquisition system which can run on mains as well as automobile battery. It is having a add on peripheral to measure an automobile parameter (engine RPM) which should be powered from vehicle battery. Presently if my unit is powered off still the peripheral has power since it is powered from battery and my unit from mains. In order to switch off both simultaneously I follow the following. with the dc voltage required for my unit operation I am activating a relay which will cut off/on the power to my peripheral when my unit is powered off/on. But I dont want to use a relay. How to cut off both power when my main unit is powered off.
I need your valuable suggestions.
Thankx
I have a data aquisition system which can run on mains as well as automobile battery. It is having a add on peripheral to measure an automobile parameter (engine RPM) which should be powered from vehicle battery. Presently if my unit is powered off still the peripheral has power since it is powered from battery and my unit from mains. In order to switch off both simultaneously I follow the following. with the dc voltage required for my unit operation I am activating a relay which will cut off/on the power to my peripheral when my unit is powered off/on. But I dont want to use a relay. How to cut off both power when my main unit is powered off.
I need your valuable suggestions.
Thankx
