How can we replace the relay in a battery charger by one or two MOSFETs?

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

cross mob
Bryant11
Level 1
Level 1
5 questions asked 5 sign-ins First question asked

How can we replace the relay in a battery charger by one or two MOSFETs? I imagine a P MOSFET mounted as a polarity protection and directly charging the battery through a schottky, and the voltage of the battery sensed by a BJT thru a voltage divider that will block the MOSFET as the battery reaches 14 volts or so. What would be the values of the components : transistor (N? P?), voltage divider… Can you explain on that?

0 Likes
2 Replies
sushank
Moderator
Moderator
Moderator
25 solutions authored 100 sign-ins 50 replies posted

HI there, 

can share with us at what application you are trying to replace the relay or send us some circuit diagram. 

thanks!

0 Likes
sushank
Moderator
Moderator
Moderator
25 solutions authored 100 sign-ins 50 replies posted

due to no further questions we are locking this thread. 

thanks! 

0 Likes