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Re: LF: OT, Remote site, garden progress, Solar battery charger

To: "[email protected]" <[email protected]>
Subject: Re: LF: OT, Remote site, garden progress, Solar battery charger
From: Spring Global <[email protected]>
Date: Tue, 30 Sep 2014 11:37:47 +0200
In-reply-to: <[email protected]>
References: <4B47B680CCBD46B69C3FB841C5A3081F@AGB> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <143F048B24A040058ED88A15AE211979@MichaelSappPC> <[email protected]> <trinity-1e9e02bd-7788-4919-af05-35f3b6f90b22-1409856610207@3capp-gmx-bs39> <[email protected]> <trinity-09c9db3c-1191-4e81-a314-0185cf637077-1410455778510@3capp-gmx-bs65> <873BC5A1589F4B79B2142360B52A648F@White> <trinity-1ce63e72-a969-4c63-b67a-88cf3a20b3dd-1410531339488@3capp-gmx-bs66> <trinity-a50be462-bc6a-41f3-ac94-b1ea3f8e0b18-1410624964410@3capp-gmx-bs12> <[email protected]> <trinity-41959bac-fcb5-4328-99ac-7859bc49bf43-1410711157753@3capp-gmx-bs15> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
Interesting, will need to build something like this shortly, need to get parts 
first 

PE3ES

> On 27 sep. 2014, at 00:51, DK7FC <[email protected]> wrote:
> 
> Hi all,
> 
> Since today, my solar powered battery in the garden is charged by this solar 
> battery charger, 
> https://dl.dropboxusercontent.com/u/19882028/20140927_004153.jpg
> It took some time until i found the circuit that suits my requirements. The 
> losses are very low! The supply current of the circuit is just 40 uA!. The 
> circuit is a comparator design which generates no QRM during ON and OFF 
> times. The switching transients are relatively slow (not like in usual switch 
> mode supplies). The hysteresis causes a switch-off voltage of 13.9V and a 
> switch-on voltage of 13.3V. The high current diode which is a very low 
> forward voltage drop is taken from an old SMPS...
> 
> Just in case someone want to play with similar stuff and likes to have some 
> ideas...
> 
> 73, Stefan/DK7FC
> 
> PS: Yes yes yes, of course the may be similar circuits in the web and someone 
> has done it before. But it wasn't the goal to do something the first time, as 
> usual :-)
> 
> 


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