[Boatanchors] Question for Tektronix Folks

David Stinson arc5 at ix.netcom.com
Sun Jul 1 17:28:25 EDT 2012


My bench scope is a Tek. 454 (have two of them).  
The vertical amp railed and I found one of the 2N4275 
transistors open-collector.
The specs for a 2n2222 show it more robust that the
4275, but it tops at 250 mHz vs. the 4275's 400 mHz,
plus the 2222 has double the collector capacitance,
8 pFd vs 4 pFd.  Still pretty small.
So will a 2222 work for now or am I going to mung it up
while I wait for the right transistor?

TNX ES 73 DE Dave AB5S


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