Tube EF 83 or Röhre EF83 ID1190, Vacuum Pentode, Noval, 9 pin miniature (USA pico-9) B9A and Audio Frequency shown. Radio tubes are valves.

The EF83 is a variable-mu AF voltage amplifying pentode. The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 48 mm tall. References: Data-sheet, 3002 & …

2021年11月10日 · The EF83 is a variable gain (mu) pentode, usually use in constant level applications. I'm not sure, that using as VAS stage it's the best choice. The 180F is super VAS …

The E83F Mullard pentode is a special quality version of the EF83. The valve was designed for class A audio amplification in telephone equipment where long life was very important. The …

2010年8月29日 · I've been designing an EL34 SIPP-amp, and since I've zero experience on the sound of small signal pentodes, plus I need ample gain and swing, I decided to try pentode …

2004年4月21日 · If you use the search function, you will find several hits for PL84. Regarding it's use, it is electrically equivalent to EL86 except for the heater voltage/current. There are many …

2005年5月11日 · For the record, The E83F (used as output driver in e.g. UE100 and V76) is just a special quality version of the EF83. Interchangeable, but the EF83 may have lower life time …

2008年5月1日 · 积分 37440 金币 25 铜板 37389 交易积分 0 技术积分 26 rmb 0 注册时间 2008-5-1

Tube E 83F or Röhre E83F ID4037, Vacuum Pentode, Noval, 9 pin miniature (USA pico-9) B9A and Universal shown. Radio tubes are valves.

The EF83 is a variable-mu AF voltage amplifying pentode. Lorenz is a German company that was taken over by the American ITT corporation. Through the expanded metal screen can be seen …