Hello, today i present my micro generating plant for a water-tap. The hydropower is used to charging my smartphone.
Montag, 30. September 2013
Charging the smartphone on a water-tap
Donnerstag, 19. September 2013
Fahrrad Dynamo-Windkraft Generator
Die Bauanleitung zu diesem kleinen Schnelläufer habe ich dem Büchlein
"Windkraft? Ganz einfach!" aus der sehr empfehlenswerten Büchserserie
"Einfälle statt Abfälle" (siehe e-bay.de) entnommen.
Dietrich Drahtlos:
Altbekanntes, geschickt verbunden,
schon ist Neues erfunden.
Magnetic Loop antenna for repeater operation
You can use the benefits of magnetic loop antennas not only for one single frequency but also for two spaced frequencys.
I have made two experimental antennas: one for 70 MHz and 74.5 MHz (f-shift 4,6 MHz) and an other one for 145.1 MHz and 145,7 MHz (f-shift 600 kHz).
The loops are in a 90° angle to each other.
In the ensuing pictures you see the measurments and pictures for the 70 MHz version.
This solution is maybe interesting in ambients where is to much RF in the air and the RX is overloaded.
I have made two experimental antennas: one for 70 MHz and 74.5 MHz (f-shift 4,6 MHz) and an other one for 145.1 MHz and 145,7 MHz (f-shift 600 kHz).
The loops are in a 90° angle to each other.
In the ensuing pictures you see the measurments and pictures for the 70 MHz version.
This solution is maybe interesting in ambients where is to much RF in the air and the RX is overloaded.
Freitag, 13. September 2013
2 X 10 W - Push-Pull - tube amplifier with ECL 82 (6BM8)
Diesen Röhrenverstärker habe ich bewusst in ein "heavy - metall" Chassis aus Stahl gebaut um meinem bevorzugten Musikstil zu huldigen. Die Leistung von 2 X 10 Watt habe ich ebenso für einen "kernig - rockigen" Hörgenuss gewählt. Zusammen mit meinem Maranz-CD-Spieler und meinen B&W DM-602 Boxen ist der Höreindruck exzellent.
Mittwoch, 11. September 2013
Overvoltage conductor for the antenna cable
I'm used a EPCOS EC 90 X as discharger for max. 100 W-TX-power.
The attenuation between 1 MHz and 150 MHz is good.
The math to 50 Ohm is verry good for the shortwave-range (SWR better 1:1,1).
The math to 50 Ohm on the 2 mb-VHF-range is not so good (SWR better 1:1,6).
Montag, 9. September 2013
Nappy spender
Here i present a verry useful projekt to keep in order the bathroom if a family member is still in one's swaddling clothes
The dimensions are for medium sized napkin's.
Use wood with a smooth surface - so the napkin's glides easely.
Freitag, 6. September 2013
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