... The ones I'm using are 200A, and they come board mounted and ready to go. Just add a couple of posts and attach wires. Come to think of it, they do...
82072
jong kung
jongkung01
May 20, 2013 6:32 pm
... I mentioned using counter / divide by 2 circuit. I forgot to mention that your freq out of 555 has to be double (100 hz) to get 50hz out of the counter /...
82073
alienrelics
May 20, 2013 6:40 pm
... I met him, too, and he did say why. There are just too many factors to take into account. Continuous wattage rating is one, but so is peak wattage, and...
82074
Kerim F
ahumanbeing2000
May 20, 2013 6:40 pm
The following idea is what I did once hence it may not be a good solution here. I needed, 15 years ago, a signal that tells me if the air-condition is not...
82075
Michael
mmk_tsm
May 20, 2013 6:41 pm
Looks like nice devices. Pity about price. Way overkill for my my application....
82076
alienrelics
May 20, 2013 6:41 pm
... Oh, you mean a hall effect device based current sensor. Steve Greenfield AE7HD...
82077
jong kung
jongkung01
May 20, 2013 6:46 pm
SG, ... I was just told remote control. I'll go ask the asker. ... number 2 eraser type. ... He said it worked for a while and then needs cleaning again. ...
82078
jong kung
jongkung01
May 20, 2013 7:03 pm
SG, et al., There used to be something called "electrical contact cleaner" - during the olden says of manual TV channel dial and volume control. Would this...
82079
Michael
mmk_tsm
May 20, 2013 7:04 pm
Hello ST, thanks for the very detailed ideas. The PLC (micro controller board actually) has opto-coupled inputs, which expect a high 24V approx to turn on....
82080
Michael
mmk_tsm
May 20, 2013 7:12 pm
Hello Jong, yes, I understand. But I could just as easily measure the aC voltage after the fuse. Either way detecting 110VAC to 240VAC. And yes, of course...
82081
jong kung
jongkung01
May 20, 2013 7:18 pm
SG, ... take into account. Continuous wattage rating is one, ... wattage, and repetition of peak wattage. Same ... heat sink and what C/W rating does it ... ...
82082
alienrelics
May 20, 2013 7:32 pm
... I have limited myself to a soft pink eraser when cleaning tin plated surfaces. Never on gold plate, never on carbon contacts. And I always follow up with a...
82083
alienrelics
May 20, 2013 7:37 pm
Those have oils in them which may be absorbed by the rubber keypad and interfere with it. If the remote control board has metal finger contacts and they...
82084
jong kung
jongkung01
May 20, 2013 7:40 pm
Hi Michael, ... Sorry I re-read my own post and that sounded rude. I was just trying to figure out how detail I (we) should explain. Some poster are...
82085
alienrelics
May 20, 2013 7:44 pm
... How does that go about "assume"? ;') No, I did not just ask about power rating. It was at an LTSpice seminar, and people much smarter than you or I asked...
82086
Stefan Trethan
stefan_trethan
May 20, 2013 8:23 pm
Steve, you remind me of the guy who told me he tasted the "grease" in the remote control to see what it is. I didn't have the stomach to tell him, but I stay...
82087
Dave C
davec2468
May 20, 2013 8:40 pm
What voltage is across these contacts? - - - Dielectric grease is meant for connectors that are in "tight" contact (ie, plugged in). Relay contacts or...
82088
KPL
krahabors
May 20, 2013 8:42 pm
I built that tool some time ago (that's my additions to code mentioned at the very end of page), so if I could do that, all parts must have been defined (in...
82089
Jim
jimpurcell2001
May 20, 2013 8:55 pm
Jong, The pencil eraser may have done more harm than good. Rubber is processed with chemicals that could leave a coating on whatever they are ryubbed on ...
82090
alienrelics
May 20, 2013 9:32 pm
... Exactly. The oils in contact protectors are much thinner, but the possibility of them being absorbed by the rubber keypad keeps me from using them in a...
82091
alienrelics
May 20, 2013 10:21 pm
Agreed. Try a pencil eraser on a clean window, you'll see just how much gets left behind. Steve Greenfield AE7HD...
82092
Frank P
qz9090
12:30 am
Jong, Have you considered using Deoxit (spray or tube, available at your local Radio Shack) to a) clean the contacts and b) protect them from further...
82093
Tony Mikolaj
miktrain
1:19 am
... This is the way I would go but power the circuit from a point after the switch and before the fuse via a small transformer that way when the switch is off,...
82094
Howard Hansen
hrh1818
2:27 am
... But the specifications for the current transformer in your link say: Frequency min 20KHz Frequency max 200KHz The description says: The 5600 series of...
82095
alienrelics
3:57 am
There are many kinds of Deoxit, and most have oil in them. I would never use any kind of cleaner containing oil on a remote control keypad. The oils may soak...
82096
Tony Mikolaj
miktrain
5:22 am
... OK, so I just linked the first on the page that I found without going through all the data, it was just a starting point. Try this one 50-60Hz ...
82097
Michael
mmk_tsm
6:32 am
Hello Tony, I think a CT trafo is an excellent way to do it. Just need a simple cct on op to get a DC on/off signal. Mike....
82098
jongkung01
10:51 am
Hi guys, OK. I uploaded some pics. I asked the first person who asked me to get me some pics. Here they are (of the the remote control contacts): ...
82099
alsadiqtrue
9:08 pm
I am still beginner and confusing with time unit of 555 equations, i.e: Suppose we have the following data R1=1000 ohm R2=720000 ohm C= 0.02 mf ...
82100
Derek
redderek
9:12 pm
You have to look at the units of the equation. If the equation is saying to use Ohms and Farads, then you need to use those unitized values. Many times, the...
