6 Apr
2011
6 Apr
'11
7:24 p.m.
On 06/04/11 20:16, Tony Duell wrote:
Perhaps I'd metter not mention the time I had a
pair of EL34s with the
anode glowing bright orange/yellow. Of coruse I had managed to short out
the grid bias supply...
Did they still work after you cooked the plates?
One of these days I should hunt down a couple of cheap vacuum tubes and
a book on VT amp design and build an audio amp... just for the hell of it.
I think 4 transistors failed,
the small-signal ones blew themselves apart. Oh yes, and then the fuse
burned out.
Rule 1: the penalty for violating Ohm's Law is electrocution.
Rule 2: a transistor will always blow in order to protect the fuse.
Rule 3: If in doubt, see Rules 1 and 2.
--
Phil.
classiccmp at philpem.me.uk
http://www.philpem.me.uk/