DIY Audio Projects Forum
 NEW  Bruce Heran outlines the details and construction of his simple DIY 6DJ8 (ECC88) Tube Hi-Fi Headphone Amplifier Project.

DIY Audio Projects Forum

Welcome to the DIY Audio Projects Message Forum. Use these forums to discuss Hi-Fi audio and to share your DIY Audio Projects. Registration is free and required to post messages and view the file attachments. Registration will only take a minute and registered users do not see any advertisements. After you have completed the online registration process, check your email (including spam/junk folder) for the verification email to activate your account. New members are under moderation - so your posts will not be visible until approved by a moderator. See the Read Me 1st, Forum RULES and Forum FAQ to get started on the forum.

It is currently 01 Nov 2014, 05:53

All times are UTC - 6 hours [ DST ]




Post new topic Reply to topic  [ 4 posts ] 
Author Message
PostPosted: 06 May 2011, 16:01 
Offline
User avatar

Joined: 23 Feb 2011, 16:31
Posts: 71
Location: Berlin / Germany
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.


This post has a file attachment. Please login or register to access it. Only Registered Members may view attached files.



Top
 Profile  
 
PostPosted: 07 May 2011, 10:51 
Offline
Editor
User avatar

Joined: 28 May 2008, 21:53
Posts: 4283
Location: Winnipeg, CANADA
Hi Joe, fantastic work on the solar power radio! :up: Its cool and looks great.

Cheers

_________________
[ DIY Mains AC Power Cable Cord ] - [ Gobo LM1875 Amp Kit ] - [ Tang Band D4-1 Horn Speaker Kit ] - [ Monoblock Push-Pull KT88 Tube Amp Kit ]


Top
 Profile  
 
PostPosted: 20 May 2011, 16:45 
Offline
User avatar

Joined: 03 May 2011, 15:16
Posts: 142
Location: Romania,Iasi City
Here is an interesting diagram of a simple solar radio from "Radio and Electronics Cookbook".Who is interested on it,pm me.
Attachment:
Solar Radio with ZN415 and TDA7052.jpeg

Components:
Resistors: 0.25 watts, 5% tolerance
R1 = 3.3 kilohms
R2 = 100 ohms
VR1 = 1 kilohm log

Capacitors
C1, C5 = 10 nanofarads (nF) ceramic
C2 = 220 microfarads (uF) electrolytic (10 V)
C3, C4 = 100 nanofarads ceramic
C6 = 10 microfarads (uF) electrolytic (10 V)
C7 = 1000 microfarads (uF) electrolytic (10 V)
VC1 = 140–300 picofarads (pF)

Semiconductors
IC1 = ZN415E (or ZN416E)
IC2 = TDA7052
D1, D2 = 1N4148
Solar panel: 9 V at 50 mA

Additional items
LS1 = 32–64 ohm miniature loudspeaker
Ferrite rod: 24 SWG enamelled copper wire
Plastic box, approx. 220 × 140 × 70 mm
Veroboard, cut to size
8-pin DIL sockets, 2 required
Knobs, 2 required
Material for speaker grille
Connecting wire


This post has a file attachment. Please login or register to access it. Only Registered Members may view attached files.



Top
 Profile  
 
PostPosted: 23 May 2011, 02:20 
Offline
User avatar

Joined: 23 Feb 2011, 16:31
Posts: 71
Location: Berlin / Germany
Hi Andrei,

do you have the "Radio and Electronics Cookbook" ?
It is possible to sent it via e-mail ?

I like these very simple radio schematics. :D
My new radio project is the very simple FM- tube radio with only 30VDC and
a 6VAC heating. I want to modify with an HF- amp. Tubes EF95 and EF98.

Best regards
Joe


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

All times are UTC - 6 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 0 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
DIY Tube Projects :: DIY Tube Amp Kits :: DIY Speaker Projects :: DIY Solid State Projects :: DIY IC / Opamp Projects :: DIY Phono Projects :: DIY Cable Projects :: HI-Fi Audio Schematics
© diyAudioProjects.com - Terms of Service - Privacy Policy