2camjohn
Member
Hello people, Long time no cheese.
I want to design a H-Bridge which can apply alot of power to a motor in one direction, it must also go in reverse but in reverse there will be less load and speed isnt as important.
Can I just use two big fets/transistors for forward and two smaller ones for reverse? Or am I missing something?
Also I want current sensing (ie an analog voltage I can interpret with a micro) when the motor is going forward, what do you guys think the best way of acheiving that is? Ive read about vurrent sensing mosfets and current sensing ICs, but im not sure where these would go in the circuit?
Any other tips on this kind of circuit, or weblinks would be greatly appreciated. Ive googled up on regular H-Bridges, but not on modifying them in the way I want.
John
I want to design a H-Bridge which can apply alot of power to a motor in one direction, it must also go in reverse but in reverse there will be less load and speed isnt as important.
Can I just use two big fets/transistors for forward and two smaller ones for reverse? Or am I missing something?
Also I want current sensing (ie an analog voltage I can interpret with a micro) when the motor is going forward, what do you guys think the best way of acheiving that is? Ive read about vurrent sensing mosfets and current sensing ICs, but im not sure where these would go in the circuit?
Any other tips on this kind of circuit, or weblinks would be greatly appreciated. Ive googled up on regular H-Bridges, but not on modifying them in the way I want.
John