(AI translated, from March 19, 2022)
A rather unusual bulb came into my hands: bulb Only two contacts. Based on the design, it looks like it could be a photo or some particle detector.
Applying around 4kVDC causes a discharge inside the bulb. This means the working voltage is lower.
The inscriptions don’t say much, most likely either serial numbers, batch numbers, or production dates.
The bulb itself was connected with a coaxial connector, and where it’s white, there’s a “homemade” mylar capacitor between the contacts. Quite strange, as higher current in the bulb’s electrodes caused spots—the coating fears discharges.
If anyone has handled similar bulbs, please share your thoughts.
