To: | "[email protected]" <[email protected]> |
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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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