An amplifier that works in reverse?

  • Thread starter kthouz
  • Start date
  • #1
193
0
I am making a circuit of a car toy.
Actually, i have already done its first step. The next step i want to make a one which is able to reverse and i think i will need an amplifier which can work in both biases (foward and reverse). So do exist amplifiers that can work in reverse as well as in foward bias?
 

Answers and Replies

  • #2
vk6kro
Science Advisor
4,081
40
Yes, it is a H-Bridge amplifier

Have a look at this:
http://www.bobblick.com/techref/projects/hbridge/hbridge.html

Basically, you have 4 transistors in a bridge circuit with the motor across between the centre points of two pairs of series transistors. You then turn on transistors that are diagonally opposite each other. Doing this causes the current to flow in opposite directions in the motor.

Alternatively, you could just reverse the leads to the motor with a set of relay contacts.
 
Last edited:

Related Threads on An amplifier that works in reverse?

Replies
1
Views
2K
  • Last Post
Replies
2
Views
2K
Replies
17
Views
29K
Replies
7
Views
3K
Replies
16
Views
4K
Replies
11
Views
1K
Replies
2
Views
611
Replies
3
Views
2K
Replies
11
Views
2K
Replies
36
Views
6K
Top