Red spots appeared on 300B anode

If they glow, this is the place to be
User avatar
Dave the bass
Amstrad Tower of Power
Posts: 12276
Joined: Tue May 22, 2007 4:36 pm
Location: NW Kent, Darn Sarf innit.

#31

Post by Dave the bass »

Nick wrote:
Just needs to remember Ia ≠ Ik in the case of A2
:idea: 'cos current flow is out through the grid too in A2? So Ia = Ig + Ik?

DTB
"The fat bourgeois and his doppelganger"
User avatar
Nick
Site Admin
Posts: 15751
Joined: Sun May 06, 2007 10:20 am
Location: West Yorkshire

#32

Post by Nick »

Yep, your light bulb is correct sir, or

Ik = Ig + Is + Ia

for a pentode.

In fact

Ik = Ig + Ia

Is always true for a triode, but in A1 Ig = 0
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
User avatar
Mike H
Amstrad Tower of Power
Posts: 20189
Joined: Sat Oct 04, 2008 5:38 pm
Location: The Fens
Contact:

#33

Post by Mike H »

Nick wrote:
Mike H wrote:Va - Vk x Ia. Seemples!

Thats what I said :-)
I know, but sometimes you have to persevere more:

"Look, V.." <slap> "a.." <slap> "minus.." <slap> "V.." <slap> .... :lol:

 
 
"No matter how fast light travels it finds that the darkness has always got there first, and is waiting for it."
Post Reply