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Current limiting a DC gear motor

Started by Lars Bentley in sci.electronics.design25 minutes ago 37 replies

I have small a 24v dc gear motor that needs to run at a certain speed and full torque at times, performing a job of winding tape on a spool, but...

I have small a 24v dc gear motor that needs to run at a certain speed and full torque at times, performing a job of winding tape on a spool, but I want to be able to intermittently limit the torque when a switch is triggered. It may be drawing 24v 1A at times and I would like to limit it to 24v 200ma when the switch is engaged. I figure I would just have the switch cut off the direct line t...


OT: Win7, Fit has finally hit the Shan

Started by Jim Thompson in sci.electronics.design38 minutes ago 14 replies

Win7, Fit has finally hit the Shan Figures, Adobe Acrobat is requiring activation and the activation server isn't responding... can't have...

Win7, Fit has finally hit the Shan Figures, Adobe Acrobat is requiring activation and the activation server isn't responding... can't have anyone out there using a 10-year-old product, particularly one that hasn't been f**ked up by idiots :-( What I need is a good PDF product with these features... (1) PDFwriter (printer), that is appears as a printer so I can print PDF's directly fro...


OT: Another math problem

Started by bitrex in sci.electronics.design41 minutes ago 8 replies

The Library of Babel is a library which contains an infinite number of hexagonal rooms, each with four exits and four walls containing...

The Library of Babel is a library which contains an infinite number of hexagonal rooms, each with four exits and four walls containing bookshelves full of 410 page books, each page with 40 lines of 80 characters. These books contain random permutations of the 25 basic characters. https://en.wikipedia.org/wiki/The_Library_of_Babel Suppose the number of books in all rooms of the libra...


ICQ: 686206496 SELL CVV GOOD AND FRESH ALL COUNTRY [SSN-DOB-BIN-FULLZ]

Started by uscvv in sci.electronics.design1 hour ago 3 replies

ICQ: 686206496 SELL CVV GOOD AND FRESH ALL COUNTRY [SSN-DOB-BIN-FULLZ] Contact me via: => Yahoo : uscvv => ICQ :...

ICQ: 686206496 SELL CVV GOOD AND FRESH ALL COUNTRY [SSN-DOB-BIN-FULLZ] Contact me via: => Yahoo : uscvv => ICQ : 686206496 ................................ USA Dumps : US Classic/Standart - $30 US Gold/Platinum - $35 US Purchasing/Signature - $45 US Bussines/Corporate - $45 US MC World - $50 ................................ EURO Dumps: EU Gold/Classic - $70 EU Corporate/Pu


Tesla Powerwall Can Increase Your Electric Bill

Started by sms in sci.electronics.design1 hour ago 46 replies

I was reading that the Tesla Powerwall is sold out for 2016. The concept of the Powerwall is that you can charge it using solar-generated...

I was reading that the Tesla Powerwall is sold out for 2016. The concept of the Powerwall is that you can charge it using solar-generated electricity from your panels rather than sending excess production to the grid, then use the electricity from the battery to power your house when the solar panels aren't producing. But the way time-of-use net metering works is that the utility credi...


Mathematical proof that there are a finite number of natural numbers

Started by bitrex in sci.electronics.design2 hours ago 9 replies

Suppose that there are finitely many natural number for some maximum natural number M. Since there finitely many numbers, this finite amount...

Suppose that there are finitely many natural number for some maximum natural number M. Since there finitely many numbers, this finite amount M of numbers may be described by sentences in the English dictionary, composed of permutations of the N words in the dictionary, containing say, 20 words or fewer. By way of contradiction, suppose that the natural numbers are indeed unbounded an...


cool resistors

Started by John Larkin in sci.electronics.design3 hours ago 11 replies

http://www.seielect.com/catalog/SEI-HVC.pdf They will sell us a 22 Meg, 0805, 1%, 25 PPM "fine film" resistor. We have a silly...

http://www.seielect.com/catalog/SEI-HVC.pdf They will sell us a 22 Meg, 0805, 1%, 25 PPM "fine film" resistor. We have a silly requirement to increase the input impedance on one of our digitizers, above the normal 1 Meg, to prevent wire loss errors. They are running #16 wire.


Is this common for a brushless motor controller?

Started by John Doe in sci.electronics.design7 hours ago 25 replies

https://farm1.staticflickr.com/659/21083853371_334b03da77_b.jpg It has five data/signal outputs from the controller to the motor in addition...

https://farm1.staticflickr.com/659/21083853371_334b03da77_b.jpg It has five data/signal outputs from the controller to the motor in addition to three heavy duty power wires. Not sure exactly where the power wires come from since the stuff is encased a glob of glue. One of those signal wires is purple, the other four are black. Is that common? If so, what's it called so I can find some ...


OT: MicroChip MPLAB not programming

Started by Robert Baer in sci.electronics.design9 hours ago 12 replies

I am dead in the water and have no boat. I have done some extensive documenting to show what i did (see ABSE). Help? Thanks.

I am dead in the water and have no boat. I have done some extensive documenting to show what i did (see ABSE). Help? Thanks.


OT: Here's a funny for you

Started by Jim Thompson in sci.electronics.design10 hours ago 5 replies

I had disabled the nag notification by "gwx" (Get Windows 10) This morning a pop-up, "gwx has quit working", asking if I wanted to restore...

I had disabled the nag notification by "gwx" (Get Windows 10) This morning a pop-up, "gwx has quit working", asking if I wanted to restore it... I killed it > :-} ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's an


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