Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

need driven motor by 8051

Status
Not open for further replies.

diver143

Newbie level 6
Newbie level 6
Joined
Apr 7, 2002
Messages
14
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
42
need driven motor circuit by the car battery 12vdc.

that is a

Car motor's window

useing the 8051

thankz
 

marie65

Super Member
Full Member level 4
Joined
Jan 15, 2002
Messages
198
Helped
19
Reputation
38
Reaction score
8
Trophy points
1,298
Activity points
1,502
Do you need variable speed, overcurrent detection, both sens of rotation?
 

diver143

Newbie level 6
Newbie level 6
Joined
Apr 7, 2002
Messages
14
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
42
no just up and down

regards,
diver143
 

marie65

Super Member
Full Member level 4
Joined
Jan 15, 2002
Messages
198
Helped
19
Reputation
38
Reaction score
8
Trophy points
1,298
Activity points
1,502
The simplest way is to use 2 relays each with 1 NO and 1 NC contacts. The relays are driven by the 8051 using optocouplers follow by a npn transistor(my option). The power schematic is
V+ --- R1NO --- Motor---- R2NC - gnd
gnd -- R1NC--| |---R2NO - V+
If you close relay1, motor will rotate one sense. Closing relay2 will rotate the other sense
Another option is to use instead of relays 4 power transistors (or 2 transistor and 2 diodes) in a H configuration.
Fuses are necessary to be use.
 

diver143

Newbie level 6
Newbie level 6
Joined
Apr 7, 2002
Messages
14
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
42
THANK YOU SO MUCH.

I'LL SEE :lol:
 

lockerman

Member level 1
Member level 1
Joined
Oct 8, 2001
Messages
40
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
234
You can use transistor bridge and drive it by digital ports.

______________________ +12
| |
PNP PNP
| |
-------(M)---------
| |
NPN NPN
| |
-------------------------
|
--- GND

If u need to chane a speed use just PWM and that's it.

Lm
 

lockerman

Member level 1
Member level 1
Joined
Oct 8, 2001
Messages
40
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
234
Sorry,
drawwing by chars does not work as I expected.

Transistors T1 and T2 have to switched on at the same time for one direction. To change direction in oposit way T3 and T$ have to be switched on at the same time.

Do not forget to use PWM if u want to control speed

Lm
 

mgajo

Full Member level 2
Full Member level 2
Joined
May 15, 2001
Messages
147
Helped
3
Reputation
6
Reaction score
3
Trophy points
1,298
Activity points
1,019
Hi
You can use L293 or L272 for smaller motors
Take a look at www.st.com for applications and data sheets,
also Allegro and NJRC for integrated components.

bye 8)
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top