Audio dual rectifier tube made by KR Audio Electronics!
The "274A/274B" is an audio dual rectifier tube made by KR Audio Electronics, using carbon-coated nickel plates. It utilizes carbon-coated nickel plates, which reduces secondary electron emission. Additionally, its robust proprietary structure makes it resistant to vibrations. 【Features】 ■ Uses carbon-coated nickel plates ■ Filament support with fishing rod springs ■ Strong against vibrations due to its robust proprietary structure ■ Employs SCHOTT glass ■ Handmade by a Meister (master craftsman), etc. *For more details, please download the PDF or feel free to contact us.
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basic information
【Maximum Ratings】 ■Choke Input ・AC Plate Voltage (each plate) RMS: 660V ・DC Output Current: 225mA ・Minimum Input Choke Inductance: 2H ■Capacitor Input ・AC Plate Voltage (each plate) RMS: 450V ・DC Output Current: 160mA ・Minimum Plate Load Impedance: 100 Ohms (each plate) ・Connecting capacitors should not exceed 10μF *For more details, please download the PDF or feel free to contact us.
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Company information
Teksor Co., Ltd. is a company located in Hamamatsu City, Shizuoka Prefecture, that deals with vacuum tubes, electronic tubes, optical devices (spectrometers, OTDRs), and more.