Dear radio friends,
I would like to present here my second DIY project with alternative energy.
It´s a small AM / FM solar radio.
Attachment:
solarradio.JPG
In my stash I had some old radio parts and they are actually for salvaging
were too good.
It includes a rest of a FM receiver with the IC TA2003 / P, a ferrite, little housing and my favorite AM-IC TA7642
Also a solar cell from an old garden lamp was available.
Attachment:
Solarzelle.JPG
Unfortunately, I realized that the solar cell has inside a loose connection.
There was no chance to use it. So I buy a new one with 4V/40mA power value.
This cell is also much smaller and fit better into the black housing.
Attachment:
solar panel 4V_40mA.JPG
The two button- cell- accumulator, I wanted to buy, should cost 29 €. I decided
me to destroy a 8.4V battery pack (9V Block) and take out two 1,2 V cells and connect it
in series.
I try also to power up the radio, with my lovely goldcap capacitor 1F/2.5V. But there is no chance, because the current for the FM part is nearly 11mA !!
In normal sunshine radio works even without accumulator.
Attachment:
loading solar energy.JPG
Here the complete documentation. Diagram and inside view.
Attachment:
AM-FM-Solar-Radio-Schematic.png
Attachment:
inside view.JPG
Best Greetings
Joe.
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Its cool and looks great.
