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Hi!
I'll be short - thanks for you input. Indeed I might borrow few things.
For now I will keep doing engineering, and considering holidays period, I might take some time. I might come back to you in September when I have my PCBs populated.
Anyway, for thanks to all for your input! Very...
Hi there! Thanks, noted!
And yes, if you could send the schematics, I will be very interested to take a look/analyze and borrow good solutions :>...
Cheers
Tomasz
Hi guys & thanks for your feedback!
@FvM: since it is OK to have direct connection of solar panels and battery, one of the variants I will do in near future is as per This Link.
BUT, I quickly put together Buck Converter from components I have, resulting in this:
Works!
But I am lost a bit...
Hi There!
Inspired by lack of electricity on my camping site, I am trying to put together a DIY solar battery charger. At the first attempt, I will try to do something simple.
Here is the concept I have in my head:
I found few circuits that follow the same concept: Link 1, Link 2, Link 3...
Hi,
Powering down memory for sure will make it immune to latch-up :). Bit upsets will be handled by software means.
I am still looking for COTS components that have some high impedance state when powered down.
Thanks for the comment & interest though!
Tom
Well, the problem is not with power consumption. In my case the idea is to power them down not to make them prone to single event effects caused by space radiation, latch-ups. So the requirement of powering down it quite important.
Unless there are some memories that can handle the VCC=0V with...
Yes, indeed. But I managed to find memories which were partially working (only two out of three lines were loaded :) )... moreover, there is AUP family of TI buffers that different type of input which allows them to be unpowered and connected to the bus.
Maybe there are some automotive memories...
Hi folks,
I am working on a project where there are few SPI memories on the bus. To have a cold sparing, some memories are turned off with an aim to be turned on when there is a problem with the power ones.
I have tested few SPI memories, but whenever you have unpowered SPI device on the bus...
Thanks for the input!
The models are the same, the pspice options in LTSpice are the same as in Orcad (anyway, Orcad has more options)... are there any others that I could try to tweak/change?
I don't get it :) ... 27deg bot results are the same, 50deg they differ..
Here are screenshots...
Hi there!
I started to play with temperature simulation of small analog circuit (including two PNPs, PN2907). Just "by accident" I started to do it in two spice simulators: OrCAD 16.6 and LTSpice IV.
In temperature 27 deg I get the same results. If I change simulated temperature (let say to 50...
Hi there,
I accidentally pressed combination 'P' 'Y' while in PCB editor in Altium 10 and grids were gone... I checked on other PCB and this combination removes grids. The problem is that I can't restore them.. any idea?
Thanks for any help!
Tom
IR camera
Hi!
I've been looking for simple IR camera. I tried to remove IR filter form webcam and it seems to work - with some external IR diodes I could record pictures in dark. Now the question:
Does anyone knows some shop/www with cheap (<100$) digital cameras modules? I guess I'd prefer to...
Hi there!
I'm not sure if that's the right place to write, but I'm looking for as complete as possible solution to gather and digitalize signal from analog telephone line.
I've been thinking of buying ~12bit ADC, gather signal, soft-process with some a-law table and then playing with that. But...
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