optocoupler/optoisolator
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I have a BOEBot that I would like to supply power to the servos
independently from that of the basic stamp's. There are 4 AA batteries
powering the stamp, and I am using a 9V with 5V regulator (LM7805) to power
the servos. Any recommendations for the specific optoisolator/optocoupler
that I should use with this type of interface and any specific designs that
I should follow? I want to send pulses from the stamp through the opto to
the servos with each component running off of their own power source to get
rid of voltage spikes and noise.
Thanks!
Paul
independently from that of the basic stamp's. There are 4 AA batteries
powering the stamp, and I am using a 9V with 5V regulator (LM7805) to power
the servos. Any recommendations for the specific optoisolator/optocoupler
that I should use with this type of interface and any specific designs that
I should follow? I want to send pulses from the stamp through the opto to
the servos with each component running off of their own power source to get
rid of voltage spikes and noise.
Thanks!
Paul
Comments
LCA-110
LCB-110
LCC-110
DIGI-KEY IS A GOOD SOURCE[/font]
[font=arial,helvetica][/font][font=arial,helvetica]Parts to look up:[/font]
[font=arial,helvetica]> check out CPClare[/font]
[font=arial,helvetica]> LCA-110[/font]
[font=arial,helvetica]> LCB-110[/font]
[font=arial,helvetica]> LCC-110 [/font]
[font=arial,helvetica]Original message:[/font]
[font=arial,helvetica]>>I have a BOEBot that I would like to supply power to the servos[/font]
[font=arial,helvetica]>>independently from that of the basic stamp's.· There are 4 AA batteries[/font]
[font=arial,helvetica]>>powering the stamp, and I am using a 9V with 5V regulator (LM7805) to power[/font]
[font=arial,helvetica]>>the servos.· Any recommendations for the specific optoisolator/optocoupler[/font]
[font=arial,helvetica]>>that I should use with this type of interface and any specific designs that[/font]
[font=arial,helvetica]>>I should follow?· I want to send pulses from the stamp through the opto to[/font]
[font=arial,helvetica]>>the servos with each component running off of their own power source to get[/font]
[font=arial,helvetica]>>rid of voltage spikes and noise.[/font]
[font=arial,helvetica]·[/font]
[font=arial,helvetica]I came across these parts, but I believe that the specs on them will not do.· The pulse widths sent to the servos by the basic stamp vary from 1-2 ms in length.· It takes about 20ms to fully send the signal through the optoisolator, with a rise time of around 5-10 ms.· I checked out Digikey and found an optoisolator part# 4N33-ND.· It think that this might work better time-wise.· I need something fast enough to accommodate the pulsouts from the stamp.· Any comments?[/font]
[font=arial,helvetica][/font]
[font=arial,helvetica]Paul[/font]