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Monday, September 6, 2010


+ SORT THROUGH APPROPRIATE POWER TRANSFORMERS
+ TEST 2 POSSIBLE TRANSFORMERS:

   - FENDER TYPE - VOLTAGE (UNLOADED)
      + RED-RED: 345VAC        HV B+
      + BRN-BRN: 41.7VAC        BIAS
      + GRN-GRN: 7.25VAC        HEATER

   - FISHER (ORIGINAL) - VOLTAGE (UNLOADED)
      + RED-RED/YEL: 178VAC        HV B+
      + BRN-OR: 25.2VAC        BIAS
      + BLU-WHT: 7.0VAC        HEATER
      + GRN-YEL: 7.1VAC        HEATER (ACC - SMALLER GAUGE)

      + * FISHER PWR USES VOLTAGE DOUBLER TO ACHIEVE
         430VDC B+; ALSO VERY HEAVY, AS IT WAS DESIGNED
         FOR MORE TUBES/CURRENT

   - CONSIDER STANDBY SWITCH LOCATED AT OUTPUT TUBES CATHODES
      + SEE TUT1, P 6-58

   - RE: REVERB CIRCUIT ADD-ON, CONSIDER ADDITIONAL
      HEATER CURRENT REQUIREMENTS
      + SEE TUT1, P 8-23 FOR POSSIBLE SOLID STATE VERSION
      + 2N5485 N-CH JFET, MTP2N45 (OBSOLETE) N-CH PWR MOSFET

      + 10K:2 OHM TRANSFORMER - POSSIBLY USE HAMMOND
         125E UNIVERSAL O/P XFMR
      + IMPEDANCE MATCH NEGLIGIBLE: USE 9AB3C1B
         ACCUTRONICS TANK: LONG REVERB, 6 SPRINGS, LONG DECAY

      + ANOTHER THOUGHT - ADD ON AN ADDITIONAL
         TRANSFORMER FOR EXTRA TUBE AND ADDITIONAL
         SOLID STATE (RELAY) SWITCHING
 
+ NEED TO LOOK FOR POSSIBLE CHASSIS


(2.5HRS)

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