[Drake] Drake L-75 Amplifier Question

D C _Mac_ Macdonald k2gkk at hotmail.com
Mon Feb 20 11:31:01 EST 2017


Several years ago, I bought a "new" L-75 amp on eBay.  It turned out that it was really new, but had never been used.  Plate transformer came in its unopened original shipping box.  The L-75 had been opened, but the 3-500Z tube had been removed, along with the plate cap and parasitic suppressor.


I have replaced all the missing components and am planning to slowly bring plate voltage up to hopefully reform the never used electrolytic filter capacitors.


I am a bit puzzled by the primary 120.240 Volt primary fusing.  The repro manual I have shows a single primary fuse, but my amp (S/'N 286 w/ build date of May 14, 1981) has TWO fuses on rear panel.


Does anybody have a schematic in a forwardable format of the amp with two rear panel fuses?


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* 73 - Mac, K2GKK/5 *
* (Since 30 Nov 53) *
* Oklahoma City, OK *
* USAF, Ret'd 61-81 *
** FAA, Ret'd 94-10 *
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