2013年12月29日 · ef806s是世界上最好的ef86，精选出的超低噪声长寿命管。 左边是皱玻璃月牙顶带拼接缝的 EF806S ，右边是最常见的瘦环坑屏 EF806S 。 富豪 VALVO EF86 D 环 / 网屏

2018年7月19日 · My EF86 tubes so far. 1960 Mullard EF86 mesh plate, 1970 Mullard EF86 solid plate, Tesla EF806S (not JJ), and bidding on Telefunken EF86 chrome plate and early Valvo …

2021年8月8日 · 在电子管的线性区内以等距平行斜线来拟合电子管的特性曲线族，忽略跨导和内阻在伏安平面内的变化，可以使问题大大简化。 斜线的斜率的倒数就是管内阻ri；相邻两斜线与 …

2009年8月26日 · EF184, EF95, EF80 [etc..etc] can substitute the EF86 only after the whole circuit has been redesigned. Simply, the EF86 is usually designed to run about 1 to 3mA (where it …

EF86 page sheet date 1 1 1970.01 2 2 1970.01 3 3 1970.01 4 4 1970.01 5 FP 1999.08.16. Title: EF86 Author: Philips (scanned by Frank Philipse) Created Date:

Super low noise and microphonics, radio broadcast quality. Great for Neumann U67...

Low noise pentode intended for use as R.C. coupled A.F. EF86 voltage amplifier, particularly in the early stages of high-gain audio amplifiers, microphone pre-amplifiers and magnetic tape …

The EF86 is the standard early stage audio pre-amplifier valve. This exhibit is of unknown make but is unusual in that the outer screen is a cylindrical metal tube and not made of mesh. The …

La lampe EF86 - tube EF86. Pentode. Page avec 1 photo, brochage, caractéristiques (datasheet). Lampe présente dans 36 appareils décrits dans la base de données du Grand Livre de la TSF.

The Svetlana EF86 features: • Low microphonics and low heater hum induction - suitable for input stages in high-gain microphone preamps, phono preamps or as a gain stage in condenser …