View Single Post
  #8   Report Post  
Posted to alt.binaries.schematics.electronic
mick[_2_] mick[_2_] is offline
external usenet poster
 
Posts: 272
Default a small valve amp

On Sun, 04 Jan 2009 20:08:36 +0000, Fleetie wrote:

http://cgi.ebay.com/LOT%2F2-RAYTHEON...-PENTODE-TUBE-

PAIR-NIB_W0QQitemZ120352344397QQcmdZViewItemQQimsxZ2008 1220?
IMSfp=TL081220111004r23386

I'm having a "stupid moment": They are sold as pentodes, yet have only 5
leads. What about the heaters? Well, the heater connections must be
exposed, else they wouldn't work, so what about the other 2 electrodes?


Martin - obviously missing something


They are pentodes. http://www.radiomuseum.org/tubes/tube_ck5886.html

--
Mick (Working in a M$-free zone!)
Web: http://www.nascom.info
Filtering everything posted from googlegroups to kill spam.