![xenon tube for beseler 45a xenon tube for beseler 45a](https://www.replacementlightbulbs.com/flashtubeft92uv.jpg)
The standard ECC83s has plates like a frame grid tube, and it appears that this technique can further reduce noise and microphonics, very important in a phono amp. Have you tried ECC83s and ECC803s from JJ/Tesla? I'm interested in opinions, especially in critical phono stage use.
![xenon tube for beseler 45a xenon tube for beseler 45a](https://www.xenonflashtubes.com/33-large_default/l-4040-glass-flashtube-40x40mm.jpg)
Sorry to disturb you guys but I've just been browsing through this thread and noticed Giaime's question:
![xenon tube for beseler 45a xenon tube for beseler 45a](https://www.beselerphoto.com/wp-content/uploads/2018/09/45M-Condenser-Lightsource.jpg)
Probably easier than modifying an existing lamp array, but still, for 6 or 10 bucks, pulling apart one of these lamps might be worthwhile. I think this is what a few folks have already been doing here. Simply solder the LEDs in rows and columns as needed, run a few bare wires along the columns, and there you go.
Xenon tube for beseler 45a Pc#
I haven’t done it yet, but you could buy one of those common prototyping PC boards with copper-ringed holes placed on 0.1” centers. I bought 500 red HP LEDs for $3 at a hamfest. Keep an eye out for bags of cheap surplus single LEDs. And who knows if these LEDs have the sharp I-V knee that characterizes the low impedance LEDs? I thought I read in this forum (SY, you?) that the older red LEDs seemed to exhibit the lowest impedance.
Xenon tube for beseler 45a series#
Maybe there’s just a series resistor to flatten the sharp knee? So you’d have to modify the PCB to convert it to series-parallel connection according to your audio voltage needed. There is a clue in the ad about how they can be connected to twice the voltage (220V) although with shortened life. I wouldn’t be surprised to learn that there is also some current-limiting device in series. I doubt that there could be much “wiring” at this price. The LEDs are bound to be in series, as Gingertube says, and they must be soldered into a PC card carrier that connects them at way. These 110 V screw-in lamps are certainly cheap enough to experiment with. I don’t suggest an expensive and silly-looking taillight (although the 13 to 14 volts they’re designed to run on is a lot closer to what an EL84 might need in the cathode). Sick, huh? But maybe the basic idea of using an existing LED lamp array is worth pursuing. Whenever I see these massive LED arrays blinking in front of me at a stop light (itself an LED array.hmmm), I can’t help but think of audio. I had jokingly suggested to SY a long time ago to find a pair of Cadillac taillights for his next project.