[sdiy] eye tubes

[metasonix at earthlink.net]

>>I have a small quantity of NOS Telefunken EM87 tubes that i want to
>> incorporate into my future modular as indicators.
>> Does someone have a schematic diagram of an indicator using that tube?


See Vacuum Tube Valley, issue 18. My article therein
covers eye tubes extensively, and includes
diagrams for using some of the most common types.





E. Barbour
metasonix