[ARC5] Protecting Battery Tubes in the Learavian P-10A

Robert Eleazer releazer at earthlink.net
Tue Jul 30 19:43:57 EDT 2013


Dave:

Put in a small transformer, convert the filaments to DC and use an LM 317T or similar to regulate to 7.5 VDC.  Cheap, easy and safe.

Wayne 


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