Re: Pulses out of SNM 18-1 (at last)
Posted: Sat Aug 27, 2011 5:33 pm
You're right. Sorry. I was thinking they were around 1000mAh, but they are only a couple of hundred now I check. Well, it was reading only 2mA, actually, so I might be lucky, but anyway what I was thinking to do was have a rechargeable in there, with a power jack directly connected to power to recharge it easily. I was going to check out how much power my inverters suck as well, maybe I will pacakge up a pack of AAs to drive that too, or get some shv connectors so that I can plug in either the crate or an external 'battery' powered inverter in its own box with a lead to run to the signal amp. Keep them separate, then I can stay flexible on what plugs into what.Doug Coulter wrote:Looking good! I looked up a standard 9v alkaline on digikey and the data sheet shows 100 hours (to 5.4v) at 5ma -- in other words, 5 ma is a real battery-eater. 4 days for a few bucks. Now the original 150ua I designed that to draw doesn't look so dumb. Those specs are always quite optimistic in my experience. There's a lot of air and packaging inside a 9v battery, not so much is actual battery.
Yeah, but too easy just to take a photo than to try to work out how to use that PC based stuff right now! Too many other things to juggle the concentration on!Yeah, those scopes are really a good thing to have, eh? Does yours have provision to connect to a PC or put things on an SD card? I find that really useful here, and you get much better pix.
I'd never go there. A proprietary piece of kit will always stay that way in my hands! I can make a box-of-electronic in the comfort that if I start from strach it can all get chucked in the bin if I mess it up and I ended up with what I started with - a pile of bits. This looks far too complicated, with its HV-out/signal-in combined detector interface that I'd not dream of touching it internally.What you might do is build the thing inside the existing crate