Title: 6EW7 Author: RCA Subject: FP-2002-02-03 Created Date: 2/3/2002 10:05:03 PM

Tube 6EW7 or Röhre 6EW7 ID4829, Double Triode, Noval, 9 pin miniature (USA pico-9) B9A and shown. Radio tubes are valves.

Bold designators are close or identical, Italic designators are different ratings, different pinouts or different filament voltages. Please see the substitutes at the top of the page for more details.

Good walk-through of technical design principles. [from German] 22 tubes make sense, if they are very small, and you have enough time on you hands to over-engineer something like this. Bravo! [from German] Nice tall, thin power tubes with improvised (?) caps for a cool new look.

Sep 3, 2020 · 6ew7を2本入手したので6de7シングルアンプに差し替えてみた。 6ew7と6de7はピンコネが一緒で特性もほぼ同じ。6de7の電力増幅3極ユニットのpp maxが7wなのに対し、6ew7のそれは10wと大きくなっている。真空管の形状は太くなっているが、ベースはmt9ピンで …

Mar 6, 2003 · It just means that the 6SN7 and 6CG7/6FQ7 are electrically identical tubes, they just use a different type of socket. With heater variants I meant that the 12CG7/12FQ7 is the same electrically as the 12SN7, the 8CG7/8FQ7 is the …

Feb 17, 2019 · I rarely use the circuit but it's very easy to test and compare with actual results to other totem pole or SRPP type circuits. The lowest distortion single tube gainstage that I have ever played with was a mu follower using the 6N16B, even better than the venerable 6SN7.

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I have come up with super-triode SRPP circuits in the past, but they used the SRPP stage to make a single triode behave in a super fashion. Note that the bottom 6SN7 gets the super treatment from the SRPP output stage, not the other way around.

Dissimilar double triode utilizing the 9T9 bulb and pin configuration. The tube is designed to serve as a combined vertical deflection oscillator and amplifier.