Re: 2N2207 replacement in 547.


Bob Koller <testtech@...>
 

In the past I was able to, at least partially, alleviate the HV transformer problem by doing the following, YMMV of course.
Replace the 5642 HV rectifier tubes with fast recovery HV silicon rectifiers, and removing the filament leads, this reduces the load on the HV oscillator circuit.
Replace C808 with a high quality cap, mine was leaky, causing loss.

Also, I have a few NOS 151-0063/ 2N2207 Tek parts available, contact me off list if interested.

Join TekScopes@groups.io to automatically receive all group messages.