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DON'T just put anything in there unless you KNOW it WILL do some good, because most likely otherwise it WILL do some DAMAGE. Many contact cleaners are supposed to be removed again after application,

Which two scopes do you have RObert? I may be looking for one soon :-) <robert.hedan@...> wrote: KNOW it's both I'm sure units might there never opened board for schematics if

A contact is a contact, it doesn't really matter where it is, you KNOW it's going to accumulate dirt, dust, debris and potatoe chips over time. You think you're stupid, I've got 2 used scopes from

Hi Guys, A quick recap on my scope. I bought it off ebay last summer, used it a couple times after fixing it. Don't panic, all I had to do was make a know for the time/div switch. Anyway, I can get

I will be beating myself up over this for a long while - that was just plain stupid! Especially for me who has a lot of experience wiring up a whole variety of RS232 devices - GRRRRRRRRRRRRR! ABout

Believe me you are not the first one to do this! I spent much time of good hard thinking (and soldering) over that, because it can get really confusing with the what relative to what things. I usually

Yes, we are somewhere in the same ballpark. For the specific case we both agree the controller must look something like Vc=Vc + other components for this case of the spindle, while for a position the

Hi Stefan, I think we are basically in agreement, and I am by no way a control loop expert so I'm happy to be corrected. The intent of my late night post (That's my excuse and I'm sticking to it) was

I don't do digital controllers, only hardware, but this still doesn't seem right to me since Kd would need to have a different effect to Kp, but since this is not what we are discussing let's just

GRRRRRRRRRR. Stupid, Stupid, Stupid! I see where I messed up and it is one of those "I couldn't be any more stupid if I cut my head off" things! I made the non-working board from the working circuit -

Stefan, It was late. The Kpd was my lazy way of writing (Kp*E + Kd*E) Basically in a velocity control loop, when the actual velocity is equal to the desired velocity, the control signal output is

Caps are rulled out I think. I have tried 1uf 50V, 10uf 50V, 10uf 35V, and 10uf 24volt. If I put the darn things in backwards, I would have had to do it the same backwards way 5 times in a row.

Hey Chris, you want me to send you some? I have a *pile* of those here , 1uF/50V... -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of

I just posted a layout for this circuit board in the files section FILES -> Chris-LCD -> IO InterfaceUnit.PDF If someone could take a look at it just to make sure I didn't do something really stupid!

The caps are in the correct way. These particular caps have the band and - sign on the negative lead - very clearly marked. The caps on the board that is working don't have any indication of which way

Thank you much! Just stumbled onto a Digikey catalog - boy there's lots of cool stuff there! Pressure transducers, IR LEDS, dc/dc regulators.now all I need it time - winter just wasn't long enough.

Hi Are the caps from Jameco or Digikey connected the wrong way round. some makers indicate the negative terminal, some indicate the positive terminal? Alan From: "lcdpublishing"

<lcdpublishing@...> wrote: For both devices, the proper value for the capacitors is 1 ufd, not 10 ufd. For the MAX232N: pin 2 should be +8.5V and pin 6 should be -8.5V if the charge pumps are working.