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I thought that was the key difference between Leclanche cells and regular (non-Leclanche) dry cells. Andy

The Everready >primary< AA and AAA and 9V lithiums do not have a drop down regulator. Just disassembled a dead AA and 9V. They are pricey but probably worth it for several reasons... For test gear I

I don't know, but I expect they all use crimped seals of? one form or another, and the quality of those seals (a manufacturing step where they can save money) surely comes into play.? Even if they

Try removing then reconnecting the press on RF connector. Rotate it about 45 degree each way after you reconnect it. Those connectors have an amazingly low VSWR matched by their lack of robustness.

I don't know if this is relevant.? ?But one of the stated characteristics of Leclanche cells was an initial open-circuit voltage of about 1.4 V, which rapidly falls off.? Whereas carbon/zinc dry

Dave <theschemer@...> added the photo album Lorex Wifi Camera ( /g/electronics101/album?id=301067 ) : An image of the circuit board of my Lorex Wifi security camera that has

I'd be concerned about the word "outdoor" in that sentence. Being exposed to the elements opens up at least a few cans of worms.? Including corrosion.? Or frozen (compromised) components.? Some of

I just realized that the problem is likely just the wifi card that the antenna connects to. Problem is that it's likely proprietary and? not obtainable.

I just opened it up with a Phillips head screwdriver and all the connections look ok. The antenna connection is on the frame or housing of the camera and looks in fine shape. It travels through the

Question about the Lithium AA cells - I know they use a little buck regulator to get the voltage down to 1.5V (nominal) but that also means that they are current-limited. Finding out the current limit

Is the screw on connector mounted on the PCB or is there a jumper? Most cameras I've worked with have a short, 5" or so, jumper with a press on RF connector on the PCB. A few have the SMA directly on

I will see if I can get into the camera and post pics of what I find or see inside. I probably have the correct tools to get into it as I have some gun tool kits that have an assortment of bits along

On Sunday 02 March 2025 01:49:59 am Andy via groups.io wrote: > On Sat, Mar 1, 2025 at 01:30 PM, wn4isx wrote: > > > > > ****The "less likely to leak" has become a joke, all the major brands now > >

You don't need to cut anything open. Just grab one corner of the sheet metal where it joins with a pair of needle nosed pliers, and twist. Keep going like that and eventually you peel all of the

Harbor Freight has a set of bits like that too. They've pretty much covered my needs when I encounter some of that weird stuff. I try not to do business with amazon to the extent possible. :-) --

One more battery detail: Pagers (beepers) used N-cells and later AA-cels. Mercury cells were popular with the much longer life. I collected dead cells and recovered the mercury that I then

On Sun, Mar 2, 2025 at 10:48 AM, wn4isx wrote: I wrote: > > They started out dry but the electrolyte was replaced with magnesium > dioxide and they became 'dry.' That should have been They started

Nobody but engineers and chemists called them by their proper name. Leclanché cells were the first practical "dry cell." They started out dry but the electrolyte was replaced with magnesium dioxide

It appears to me that the alkaline batteries have gotten worse. Presumably thinner shell to save money and increased performance. It also appears that the free carbon-zinc batteries from China leak

If rumors are to be believed (I know, there's a major problem with that), then some brands are considerably better than others in this respect. I have been warned never to buy name-brand "X" because