2A3 @ The Valve Museum - r-type.org
The 2A3 is an audio power triode that is still used in amplifier designs. Modern manufacture reproduces this directly heated design. The 2A3 is normally used in a push-pull arrangement and care needs to be taken in the bias settings for each valve as a small change in grid bias will greatly alter the standing anode current and any mismatch will ...
2A3, Tube 2A3; Röhre 2A3 ID2827, Triode, vacuum - Radiomuseum
Tube 2A3 or Röhre 2A3 ID2827, Triode, vacuum, UX-Base (4 Pins (2 thick, USA 1924, UX) and Power/Output shown. Radio tubes are valves.
2 A 3 MOTHER o F H National Union Single-Plate 2A3 (1934); Arcturul Single-Platl! 2A3 (1934); Raytluon Triple Triode 2A3H (1936) J G H ReA Bi-Plate 2A3 (19401); RCA 2A3 (um 1940,); ReA. Bi_Plate 6A3 (19401) Raythcon's "Four Pillar" 2A31-1, pro duced in 1936, was an oddiry. The original version had three
Design Of A Single Ended 2A3 Valve Amplifier - Part 1
2015年5月30日 · This graph shows a series of curves representing the relationship between voltage across the valve and the current through the valve for different grid voltages. Let's consider the classic 2A3 operating point, i.e. how the valve is "set up": 250V, 60mA, …
2A3s in push pull; class A - diyAudio
2007年6月20日 · Since the 6B4G and 2A3 are electrically equivalent, except for basing and filament voltage, it's safe to say that the 2A3 is well suited to PP circuitry. AAMOF, the lower filament voltage means less trouble with residual hum, when AC heating is employed
VinylSavor: Tube of the Month : The 2A3 - Blogger
The 2A3 is a directly heated output tube which enjoys continued popularity over the decades and is even still made to day by various manufacturers. It shares the same UX4 base and pinout with other triodes like the 45, 300B, 10Y and many more. In single ended operation it is good for 3.5W of glorious output power.
2a3-test
2000年6月10日 · All valves where compared in the "Legacy" Amplifier. It allows very quick "like for like" comparisons of all sorts of 4-Pin DHT's. All 2A3's where tested with 750 Ohm Cathode Resitance and 250V Anode - Cathode Voltage, as per RCA Specification.
AliExpress 2A3B, 2A3C, 2A3D experience/reviews - diyAudio
2023年9月10日 · Linlai, Guiguang, PSVane, and Fire Crew all make versions of what they call 2A3B, 2A3C and 2A3D. The primary difference between the letter designations appears to be the shape of the envelope. Any experience or reviews with any of these tubes would be appreciated.
2A3 tube review - diyAudio
2004年11月22日 · I've heard three types of 2A3 tubes in my bottlehead paramour amps. (1) the stock Valve Arts. I found these very lush and romantic. overly so really, often descending into mushy and kind of bloated.
50s RCA 2A3 vs new JJ 2A3: electrical differences?
2017年10月25日 · The Asano 2A3 amp uses the 75A to drive the 2A3, with a 5V4G for regulating the power. Here's a link to the manual. I've read the JJs are more of a 300B in drag than a traditional 2A3, and I'm wondering if anyone can explain the differences between the JJ and a …