I tried to find high current toroidal inductor (25A) with 180uh but I couldnt find one, so I would like to design my own inductor for a buck converter using...
I know enough to know that I don't know! The design current of the supply should be a good indicator of the gauge of wire, but the core characteristics at 50...
Hi elmurry: I found a chart by Googling for "AWG ampacity chart": http://www.powerstream.com/Wire_Size.htm Notice 10 AWG wire is rated for 55 or 15 Amps (read...
http://www.techlib.com/electronics/raindetectors.htm I need a mod to this project, instead of the sounder turning ON when it rains,I need it to turn OFF, it's...
I assume you want it to stay completely off during the rain, so I'll describe a simple circuit that does that: Imagine a VMOS transistor like the BS170 or...
... Hi, thanks for your reply, I think you sent a Pic but it did not get through, I have tried to do a TXT circuit to show you what I think you are saying but...
No, I just tried to describe it. I was thinking that the load would be between the positive power supply and the drain, with the load's positive connection...
... Hi again, let me know when you wish to bow out. Bit's turned up today 5xBS170 & 10xmegohm resistor's Got a Breadboard from Maplin's put ciucut to gether...
You need more voltage for the gate of the FET, but not for the transmitter. Use a separate battery for the gate circuit. Add a couple of cells to the TOP of...
... Hi, Works great (6Volt), just what I wanted. Your help and patience is very much appreciated, I have it all in my head what I need from the £/shop to...
I have just installed the following circuit into a geiger counter in order to be able to use scintillators: http://cdtsys.com/CDV700-6A_to_scintillator.GIF The...
Try a 220k from base to collector on the second transistor for a little auto-biasing. That should drop the collector voltage to about 5.5 volts, and the...
Concerning your 'Silent Metronome' circuit on http://www.techlib.com/electronics/flasher.html . . . . . I have successfully created this circuit on a...
Multiple LEDs should work fine, as long as each LED has its own current-limit resistor. The cable length is not important. The first thought that comes to mind...
None come to mind that I would use for PMTs. It also depends on the application. Many years I used Cockcroft-Walton voltage multipliers, with the DC capacitors...
Rats! I was thinking the same thing about using one of the supplies on the techlib site as I'm just about to start on a PMT project. I was going to use a PMT...
I have a Tama Rhythm Watch (basically this is an electronic metronome) with a headphone output jack. I need to come up with a small circuit to drive about 5...
Hi, Please accept my apologies if I have not followed the correct protocol but this is the first time I have ever used a forum. My question is: can someone...
I was writing in general terms. They only need that kind of current if exposed to significant light levels. You can get away with a micro-power supply for a...
I discuss the parts in the text, but they aren't particularly critical. I'd stick with metal film resistors, and the rest is fairly self-explanatory. Just post...
Charles and friends, Thank you for the welcome to your group of your two most recent members. (7th and 9th March 2012) Ian and I learned of you from a glowing...
Dear new friends, Ian here, Hi! Guy had mentioned below that I might do a quick rundown of what we are setting up to do. We are supporters of former professor ...
That's interesting stuff. I never did come up with an explanation regarding the diurnal variation. My data was "analog" so I needed a converter, but yours is...
My little PicAXE program should send an "enter" to the computer, to drop to the next row in the spreadsheet. Add it right before the "goto main" command: ...
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Mar 10, 2012 8:34 pm
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