Search found 5 matches

by UnKaiF
Sun Mar 04, 2018 2:02 pm
Forum: DSO Shell
Topic: Li-ion power mod
Replies: 144
Views: 184699

Re: Li-ion power mod

Please forgive me if I was somewhat rude. You are partly right. Of cource, the regulator MAY be unstable when difference between the input and output voltages becomes small. But it does not stop regulating ! Simply, the characteristic becomes nonlinear, which facilitates self-oscillations. Whether i...
by UnKaiF
Sat Mar 03, 2018 6:26 pm
Forum: DSO Shell
Topic: Li-ion power mod
Replies: 144
Views: 184699

Re: Li-ion power mod

[sarcasm ON]
OK. If you need a theoretically and "racially correct" solution for this little toy - use something like this.
[sarcasm OFF]
Suggestions on the drafts above is a tradeoff, why don't you understand ?
by UnKaiF
Fri Mar 02, 2018 3:43 pm
Forum: DSO Shell
Topic: Li-ion power mod
Replies: 144
Views: 184699

Re: Li-ion power mod

As far as regulating the 3.3V supply directly from the Li-Ion battery, it is a bad idea. Draining a Li-Ion battery down to 3.0V or even 2.8V is perfectly acceptable... Yes. You are 100% right. On my drafts only the principle is reflected. The protection devices are not shown there. Moreover, a low ...
by UnKaiF
Thu Mar 01, 2018 5:41 pm
Forum: DSO Shell
Topic: Li-ion power mod
Replies: 144
Views: 184699

Re: Li-ion power mod

So, I don't like to join debates, but: 1. We are geeks, I think. We, usually, do not looking for "easy way", right ? :) 2. It is so difficult - to replace TWO components ? Advantages: 1. Increased battery lifetime [or/and] small size battery can be used. (More free space in the case.) 2. L...
by UnKaiF
Tue Feb 27, 2018 6:16 pm
Forum: DSO Shell
Topic: Li-ion power mod
Replies: 144
Views: 184699

Re: Li-ion power mod

Hi guys !
Some geek's comics:
bad design.png
Look at DSO150 little closer:
dso150_simplified_power_flow.png
Yes, we are guilty of global warming. :lol: What now ?
right design.png
Something else ? Yes !
perfect design.png