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Air-cooled motor

(6)
You can believe whatever you want, but those silver things are iron laminations to conduct the magnetic field. ST On Fri, May 22, 2015 at 5:11 PM, DaveC
Stefan Trethan
6
posts
8:58 AM

What to pull from trashed microwave oven.....

(10)
Hey Phil, I saw a cut away of the magnetron on YouTube. Like you said, there's not much inside. Having said that, I've been reading here how many of these
Jong Kung
10
posts
9:47 PM

Industrial long-distance beam-type infrared sensors

(10)
Unfortunately I deleted the link to the sensors message early on so I don't remember their particular form, but the thinking remains the same - have the sensor
Donald H Locker
10
posts
May 20

monitor 120 VAC relay w arduino

(3)
Easiest would be to use a spare, unused pair of contacts on the relay. Are these really relays that control your motors? Usually theyƆre contactors (glorified
DaveC
3
posts
May 13

Trying to find datasheet for Ancient Op Amp

(12)
Definitely does not match the data sheet I uploaded. Total mystery here.
Paul Alciatore
12
posts
May 10

New file uploaded to Electronics_101

(466)
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Electronics_101 group. File : /1 -
Electronics_101@yahoogroups.com
466
posts
May 6

miniPCI dummy board

(3)
How about these: http://www.ebay.com/itm/PROTOTYPE-PCB-FR4-PTH-6-9-x-4-5-PCI-SLOT-Double-Side -Universal-Board-10-/271275986731?pt=LH_DefaultDomain_0
Paul
3
posts
May 6

Help regarding 220 AC triggering of 3V DC musical door bell

(7)
Probably unsafe with the parts you described, but hey, I don't care. ST
Stefan Trethan
7
posts
May 4

How to create -10v to +10v servo drive control signal

(7)
This is perfect thanks!!! On Sun, May 3, 2015 at 3:00 PM, Howard Hansen hrhan@att.net ... This is perfect thanks!!! On Sun, May 3, 2015 at 3:00 PM, Howard
mark hubrich
7
posts
May 3

Ground plane over noisy signal?

(8)
What you really want to absorb the inductive kick-back, is something to dissipate the energy; i.e., some resistance. A diode tends to allow the coil current to
Andy
8
posts
Apr 28

Measuring amp usage to subpanel/circuit

(12)
Sorry, yes it's a standard breaker. The issue is our kitchen, laundry room and a lot of halogen can lighting is all on this panel. Since both my wife and I
Aaron Turner
12
posts
Apr 27

Speaker produces high frequency popping sound

(4)
VIJO, You have to isolate the problem more. It seems like you are not sure where is the source (speaker, power supply, tilt head, etc.). One say is to try
Jong Kung
4
posts
Apr 27

uController & RS-232

(43)
I come across such in industrial use, and the more robust cousin, RS-422. LAN as well. USB is becoming more prevalent, though it has distance limits. These
fmfvt
43
posts
Apr 14

that 220v/1w zener...

(16)
Go to Jameco Electronics and order their P/N 1305818 which is manufactured by On Semi, and whose P/N is 1n5288BG..a 200v +- 5% 5 watt zener diode in stock.
Frank Mead
16
posts
Apr 9

Need to "dump" about 10 amps at 80 volts

(17)
That may work, but it still has to dissipate 800 Watts of heat. Big transistors or FETs and a big heat sink. Resistors are probably cheaper and more reliable.
epa_iii
17
posts
Apr 6
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