Hobby Electronics Basics

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dc motor basics?

If I have 2 12v motors, each 1 inch in diam, one with 3 poles, one with 5 (or 7) poles, which has more torque? more rpm?...
10 comments posted 21yrs
posted by bobgardner
10 comments posted 21yrs posted by bobgardner

Oscope measurement and probe grounding

Hi, I have just set up my ERA-1SM amplifier, like it says to do here (P. 2) : http://www.minicircuits.com/appnote/an600...
5 comments posted 21yrs
posted by letron_2000no__spam
5 comments posted 21yrs posted by letron_2000no__spam

27" JVC Model AV-27920

I've got a 27" JVC TV. The TV works ok, but there is about an inch of space on the left hand side of the screen that do...
4 comments posted 21yrs
posted by comteck
4 comments posted 21yrs posted by comteck

profile cutter

Hi I am looking for imformation or schematics for a MAGIC EYE PLASMA PROFILE CUTTER ,this is the type where you put a d...
0 comments posted 21yrs
posted by windy
0 comments posted 21yrs posted by windy

Normal 4-pin USB to USB-OTG?

Hi all, Can I connect normal 4-pin USB to USB-OTG? Or is USB-OTG must be connected to another USB-OTG? Best regards, Dav...
0 comments posted 21yrs
posted by zhushenli
0 comments posted 21yrs posted by zhushenli

Connect two USB slave

Hi all, AFAIK, connecting two USB slave requires 3 chips: Controller chip + USB host chip + USB hub chip. But the 3 chi...
0 comments posted 21yrs
posted by zhushenli
0 comments posted 21yrs posted by zhushenli

SHU2L motor

I scavenged a Sankyo SHU2L motor from a piece of equipment, and now I'd like to put it to use. http://www.sankyoseiki.c...
0 comments posted 21yrs
posted by ruthal
0 comments posted 21yrs posted by ruthal

neg voltage relay driver (for an idiot)

Hi. I have a need for a circuit wherein 2 relays respond to a voltage state of either +24V or -24V. The off state for b...
34 comments posted 21yrs
posted by crm0922
34 comments posted 21yrs posted by crm0922

2-port USB hub chip?

Hi all, Is there exist 2-port USB hub chip? Any suggestions will be appreciated! Best regards, Davy
0 comments posted 21yrs
posted by zhushenli
0 comments posted 21yrs posted by zhushenli

isolating RS485

Considering... 1) Use an isolated driver such as the ADM2486 with an isolated 100mW 5V-5V DC-DC converter. 2) Use my st...
0 comments posted 21yrs
posted by none
0 comments posted 21yrs posted by none