The way servos work is, every pulse turns them on briefly, and the width of the pulse (between 1 and 2 milliseconds) controls the setpoint. So it's not a big deal if you send pulses more frequently for lower values. This is how most hackaday/make/etc circuits work.
You will likely find that the second circuit is wildly unstable in noisy environments because there's not enough filtering for the power supply. If you build either one and the servo jitters all over the place, especially when other components of your system are operating, add more caps.
This is where you look in your parts bin and see how many parts you already have. Select the circuit based on what you have on hand.
Hi my friends
We are experte in providing the servo motors and drivers.
We are not only provide the world famouse brands of servo motors and drivers, but also we can provide the save-cost high efficiency equivalent solutions for you,
If you are worried about that you need some obsoloted servo motor or driver.
We can provide the accurate and workable equivalnt solution for you.
if you would like contact with more details,
Please search as-servo-motor
Then you will see me
86 13678008827
Tany Ling.
The brands we can provide as following:
ABB
ACOPOS
AKSDQ
ALLEN BRADLEY
AMK
BALDOR
BAUMULLER
BAUTZ
BECKHOFF
BOSCH
CHINT
CONSEW
DELTA
DEYU
DORNA
EATON`S VICKERS
ECHU
ELAU
ELMO
ELWOOD FETTYS
EMERSON
MEG
ESTUN
FANUC
FOTEK
FUJI
FUKUTA
FUTABA
GLENTEK
HELUKABEL
HITACHI
HITEC
HIWIN
HOLLEYWELL
HONY
HR TEXTRON
IGUS
INDRAMAT
INOVANCE
INVT
IRT
JSM
KEB
KEYENCE
KINCO
KOLIMORGEN
KOYO
LAPP
LENZE
LSIS
MAVILOR
MCG
MITSUBISHI
MOOG
NIKKI DENSO
NSK
OMRON
ORIENTAL
PASIFIC SIENTIFIC
PANASONIC
PARKER
PARVEX
REXROTH
ROCKWELL
SAIO
SAMSON
SAMSUNG
SANMOTION
SANWA
SANYO DENKI
SCHNEIDER-ELECTRICAL
SEM
SEW SICK
SIEMENS
TAIAN
TAMAGAWA
TECO
TEKNIC
TENGEN
TSHIBA
TOWERPRO
XINJE
YASKAWA
YF
YUKEN
Neither of these are any good, because they both provide a fixed pulse length to the motor. In order to control a servo motor you should have both position and velociy feedback.
So i have to servo position control circuits and i was wondering which is a better circuit to use....
this one http://makezineblog.files.wordpress.com/2013/05/figb.png?w=620&h=452
or this one http://i1.wp.com/make-images.s3.amazonaws.com/3GSVE55yAbXYoYwe.jpg?resize=620%2C465
please and thank you
