[sdiy] Vox continental - one other thing...

[Dave Manley]

Tom Wiltshire wrote:
> Sorry, there's one other question I've got about the Continental.
>
> Why do the OC71 germanium transistors have *four* legs?!
>
> http://www.electricdruid.com/continental.gif
>
> It looks like a basic transistor flip flop, but I don't get the 
> four-legged transistors drawn as a black box. What's going on?
>
According to this they don't: 
http://homepages.nildram.co.uk/~wylie/Mullard/Mullard.htm
(scroll down to find a pic of an OC71).

I think whoever drew the schematic just took a short cut, similar to how 
you often find multiple transistors all controlled by the same base 
connection, with all the bases tied together, with the schematic showing 
a 'lead' on the same side as the collector and emitter.  If you look at 
the OC71's on the left side, they only have three leads.

-Dave