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bp@www.zefox.net wrote:I think the chances of finding an 'ideal' battery are relatively slender.side, you could put it all downstream of the Pi power supplyOn second thought, this is probably wrong. If one connects
and skip line detection entirely. That's a big advantage.
to a Pi a 5 volt supply in parallel with a blocking diode
and a 6 volt battery, the diode is still forward biased
and will drain the battery eventually. Some kind of switch
is needed, controlled by line detection.
Maybe a three terminal regulator set for 5 volts out powered
by a 9 (or higher) volt battery pack could be substituted.
Still, one has to consider the idle draw of the regulator.
TI's LM340 takes 6 mA roughly. Still, that's a smallish
supply for a Pi. You'll likely want something larger.
Apologies for the red herring!
bob prohaska
Date | Sujet | # | Auteur | |
13 Mar 24 | Backup power supply | 50 | Andriy D | |
13 Mar 24 | Re: Backup power supply | 5 | Mike Scott | |
13 Mar 24 | Re: Backup power supply | 2 | Andriy D | |
13 Mar 24 | Re: Backup power supply | 1 | Mike Scott | |
14 Mar 24 | Re: Backup power supply | 2 | <bp | |
5 Apr 24 | Re: Backup power supply | 1 | Lars Poulsen | |
13 Mar 24 | Backup power supply | 27 | Vincent Coen | |
13 Mar 24 | Re: Backup power supply | 26 | Mike Scott | |
14 Mar 24 | Backup power supply | 25 | Vincent Coen | |
15 Mar 24 | Re: Backup power supply | 1 | Andy Burns | |
15 Mar 24 | Re: Backup power supply | 23 | Ahem A Rivet's Shot | |
15 Mar 24 | Re: Backup power supply | 19 | druck | |
15 Mar 24 | Re: Backup power supply | 1 | Ahem A Rivet's Shot | |
5 Apr 24 | Fwd: Backup power supply | 17 | Lars Poulsen | |
5 Apr 24 | Fwd: Backup power supply | 2 | Richard Falken | |
6 Apr 24 | Re: Fwd: Backup power supply | 1 | The Natural Philosopher | |
6 Apr 24 | Re: Fwd: Backup power supply | 14 | The Natural Philosopher | |
6 Apr 24 | Re: Fwd: Backup power supply | 1 | Ahem A Rivet's Shot | |
7 Apr 24 | Re: Fwd: Backup power supply | 5 | Bob Martin | |
7 Apr 24 | Re: Fwd: Backup power supply | 4 | The Natural Philosopher | |
7 Apr 24 | Re: Fwd: Backup power supply | 3 | Ahem A Rivet's Shot | |
7 Apr 24 | Re: Fwd: Backup power supply | 2 | The Natural Philosopher | |
8 Apr 24 | Re: Fwd: Backup power supply | 1 | Computer Nerd Kev | |
7 Apr 24 | Re: Fwd: Backup power supply | 3 | Computer Nerd Kev | |
7 Apr 24 | Re: Fwd: Backup power supply | 2 | Ahem A Rivet's Shot | |
8 Apr 24 | Re: Fwd: Backup power supply | 1 | Computer Nerd Kev | |
10 Apr 24 | Re: Fwd: Backup power supply | 4 | Lars Poulsen | |
10 Apr 24 | Re: Fwd: Backup power supply | 2 | TimS | |
11 Apr 24 | Re: Fwd: Backup power supply | 1 | The Natural Philosopher | |
11 Apr 24 | Re: Fwd: Backup power supply | 1 | The Natural Philosopher | |
15 Mar 24 | Backup power supply | 1 | Vincent Coen | |
15 Mar 24 | Re: Backup power supply | 2 | The Natural Philosopher | |
15 Mar 24 | Re: Backup power supply | 1 | Ahem A Rivet's Shot | |
13 Mar 24 | Backup power supply | 7 | Richard Falken | |
14 Mar 24 | Re: Backup power supply | 6 | Andriy D | |
14 Mar 24 | Re: Backup power supply | 4 | The Natural Philosopher | |
14 Mar 24 | Re: Backup power supply | 3 | Andriy D | |
14 Mar 24 | Re: Backup power supply | 2 | Computer Nerd Kev | |
15 Mar 24 | Re: Backup power supply | 1 | Andriy D | |
17 Mar 24 | Re: Backup power supply | 1 | Richard Falken | |
14 Mar 24 | Re: Backup power supply | 10 | Mike Scott | |
14 Mar 24 | Re: Backup power supply | 7 | <bp | |
16 Mar 24 | Re: Backup power supply | 6 | Mike Scott | |
16 Mar 24 | Re: Backup power supply | 5 | <bp | |
16 Mar 24 | Re: Backup power supply | 4 | <bp | |
16 Mar 24 | Re: Backup power supply | 1 | David Higton | |
17 Mar 24 | Re: Backup power supply | 2 | The Natural Philosopher | |
18 Mar 24 | Re: Backup power supply | 1 | <bp | |
15 Mar 24 | Re: Backup power supply | 1 | Andriy D | |
17 Mar 24 | Re: Backup power supply | 1 | Richard Falken |
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