dumy load ac/dc
Hi,
Just want to know if my design for dual power switching between an AC-DC adapter and batteries as shown below is correct. My intention is to allow the system to draw power from the AC-DC adapter instead of batteries when AC-DC adapter power is available.
Appreciate if there is any feedback on this circuit.
Thanks.
Regards,
Eric
**broken link removed**
Added after 3 hours 59 minutes:
hi IanP,
I receive notification of your reply but the post isnt here. Thanks for your reply anyway. Appreciate if you can re-post so that I can see your attached picture.
Message below:===============
As it is, you may have problems with switching the MOSFET off, especially if the DC voltage is 9V and battery voltage is 12V .. Try to add another transistor, can be any general purpose BJT or MOSFET (2N7000) .. see attached picture ..
Rgds, IanP
===============
Thanks.
Eric