High Voltage (Plate) & Filament - 39 VA to 940 VA 300 Series

Universal Primary & 50/60 Hz Operation

Features

  • Primary: Universal - 100, 110, 120, 200, 220,230, 240 VAC 50/60 Hz.
    • NOTE: units are designed to operate with BOTH primary windings engaged.
    • See primary wiring information under resources.
  • Bias Tap: 50 VAC tap from high voltage secondary C.T. (except part number 379WX - uses a separate 60VAC 0.2 Amp winding).
  • Highpot tested: 2,000 VAC
  • Faraday Copper Primary Shield: Our electrostatic shield reduces the capacitive coupling from the primary - greatly attenuating higher frequency current coupling to the secondaries (shield is internally grounded to the end bell).
  • Windings: Concentric wound for low stray field and low noise.
  • Models: This series is an upgrade from our entire 200 Series range of units PLUS 2 models designed specifically for 300B tubes (Part Number 300BX) and 2A3 tubes (Part Number 302AX).
  • Finish: Black powder paint to match our 1650 series of output transformers Units can be run full wave bridge or full wave C.T.
  • Conservative designs - CSA certified (209651).
  • For a more economical, open frame, universal primary - check out our 260 Series.
  • For that "high end" look & feel check out our potted versions - the 300P Series.

Gallery

Part No. VA A.C. Bias Tap on High Filament #1 Filament #2 Filament #3 Filament #4 Dimension Quantity Price Buy Now
High Voltage Voltage secondary
Secondary with C.T Grounded  
R.M.S. (VAC) (VAC) (VAC) (VAC) (VAC) Reference  
363AX 32 200V C.T. @ 115ma. 50 5V C.T. @ 2A - - - X6 19$71.314Buy Now
369AX 40 250V C.T. @ 115ma. 50 6.3V C.T. @ 2A - - - X6 29$71.536Buy Now
369BX 39 300V C.T. @ 86ma. 50 6.3V C.T. @ 2A - - - X6 15$71.536Buy Now
363CX 119 360V C.T. @ 288ma. 50 5V C.T. @ 3A - - - X11 22$107.305Buy Now
369EX 45 380V C.T. @ 75ma. 50 6.3V C.T. @ 2.5A - - - X6 12$67.971Buy Now
369HX 120 450V C.T. @ 150ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A - - X10 6$117.635Buy Now
369KX 188 450V C.T. @ 300ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A - - X20 12$129.087Buy Now
370X 41 480V C.T. @ 46ma. 50 5V C.T. @ 2A 6.3V C.T. @ 1.5A - - X6 8$79.114Buy Now
370AX 44 480V C.T. @ 58ma. 50 6.3V C.T. @ 2.5A - - - X6 21$76.907Buy Now
369GX 50 450V C.T. @ 75ma. 50 6.3V C.T. @ 2.5A - - - X6 4$71.536Buy Now
369JX 50 500V C.T. @ 69ma. 50 6.3V C.T. @ 2.5A - - - X6 74$73.319Buy Now
370CAX 66 500V C.T. @ 81ma. 50 5V C.T. @ 2A 6.3V C.T. @ 2.5A - - X8 7$90.256Buy Now
370JX 133 500V C.T. @ 161ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A - - X20 4$133.088Buy Now
370KX 229 500V C.T. @ 322ma. 50 5V C.T. @ 6A 6.3V C.T. @ 6A - - X22 7$138.192Buy Now
370DAX 76 520V C.T. @ 104ma. 50 6.3V C.T. @ 3.5A - - - X8 5$86.913Buy Now
370BX 55 550V C.T. @ 58ma. 50 5V C.T. @ 2A 6.3V C.T. @ 2A - - X7 44$80.473Buy Now
370CX 59 550V C.T. @ 75ma. 50 6.3V C.T. @ 0.6A 6.3V C.T. @ 2.5A - - X7 11$86.913Buy Now
370DX 86 550V C.T. @ 104ma. 50 5V C.T. @ 2A 6.3V C.T. @ 3A - - X8 8$90.256Buy Now
370EX 119 550V C.T. @ 144ma. 50 5V C.T. @ 3A 6.3V C.T. @ 4A - - X11 10$99.170Buy Now
370FX 141 550V C.T. @ 173ma. 50 5V C.T. @ 3A 6.3V C.T. @ 5A - - X20 7$107.305Buy Now
370HX 180 550V C.T. @ 230ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A - - X20 1$135.919Buy Now
370LX 340 550V C.T. @ 460ma. 50 5V C.T. @ 6A 6.3V C.T. @ 9A - - X23 4$180.942Buy Now
370MX 403 550V C.T. @ 575ma. 50 5V C.T. @ 6A 6.3V C.T. @ 9A - - X24 14$183.876Buy Now
371X 63 560V C.T. @ 69ma. 50 5V C.T. @ 2A 6.3V C.T. @ 2A - - X7 11$82.456Buy Now
372BX 98 600V C.T. @ 115ma. 50 5V C.T. @ 2A 6.3V C.T. @ 3A - - X10 1$94.780Buy Now
372DX 127 600V C.T. @ 144ma. 50 5V C.T. @ 3A 6.3V C.T. @ 4A - - X11 11$104.742Buy Now
372FX 150 600V C.T. @ 173ma. 50 5V C.T. @ 3A 6.3V C.T. @ 5A - - X20 3$121.612Buy Now
302AX 198 600V C.T. @ 230ma. 50 2.5V C.T. @ 2.5A 5V C.T. @ 3A 6.3V C.T. @ 6A 2.5V C.T. @ 2.5A X13 1$143.073Buy Now
372HX 191 600V C.T. @ 230ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A - - X13 17$138.170Buy Now
372JX 243 600V C.T. @ 288ma. 50 5V C.T. @ 4A 6.3V C.T. @ 8A - - X14 4$146.661Buy Now
372KX 432 600V C.T. @ 575ma 50 5V C.T. @ 6A 6.3V C.T. @ 9A - - X21 5$200.610Buy Now
372LX 520 600V C.T. @ 690ma 50 5V C.T. @ 6A 6.3V C.T. @ 12A - - X25 4$223.034Buy Now
372X 75 620V C.T. @ 81ma. 50 5V C.T. @ 2A 6.3V C.T. @ 2.4A - - X8 4$93.599Buy Now
376X 157 640V C.T. @ 173ma. 50 5V C.T. @ 3A 6.3V C.T. @ 5A - - X20 11$147.084Buy Now
373EX 311 650V C.T. @ 345ma. 50 5V C.T. @ 6A 6.3V C.T. @ 9A - - X23 1$188.197Buy Now
373FX 386 650V C.T. @ 460ma. 50 5V C.T. @ 6A 6.3V C.T. @ 9A - - X24 6$195.684Buy Now
373DX 101 700V C.T. @ 104ma. 50 5V C.T. @ 2A 6.3V C.T. @ 3A - - X10 6$124.799Buy Now
373X 125 700V C.T. @ 127ma. 50 5V C.T. @ 2A 6.3V C.T. @ 4A - - X11 4$117.110Buy Now
373BX 187 700V C.T. @ 201ma. 50 5V C.T. @ 3A 6.3V C.T. @ 5A - - X13 25$125.200Buy Now
373HX 369 700V C.T. @ 403ma. 50 5V C.T. @ 6A 6.3V C.T. @ 9A - - X21 4$210.159Buy Now
373JX 710 700V C.T. @ 863ma. 50 5V C.T. @ 6A 6.3V C.T. @ 12A - - X26 7$379.258Buy Now
374AX 136 720V C.T. @ 138ma. 50 5V C.T. @ 3A 6.3V C.T. @ 3.5A - - X11 4$115.885Buy Now
374X 141 750V C.T. @ 127ma. 50 5V C.T. @ 3A 6.3V C.T. @ 5A - - X20 4$106.970Buy Now
374BX 200 750V C.T. @ 201ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A - - X13 26$134.136Buy Now
375X 171 800V C.T. @ 155ma. 50 5V C.T. @ 3A 6.3V C.T. @ 5A - - X20 3$191.655Buy Now
378X 237 800V C.T. @ 230ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A - - X22 10$169.905Buy Now
300BX 280 800V C.T. @ 288ma. 50 5V C.T. @ 1.2A 5V C.T. @ 3A 6.3V C.T. @ 6A - X15 25$178.841Buy Now
378CX 465 800V C.T. @ 534ma. 50 6.3V C.T. @ 6A - - - X21 16$182.429Buy Now
379WX 940 800V C.T. @ 1.06 A or 850V C.T. @ 1A 60* 6.3V C.T. @12A - - - X26 5$407.898Buy Now
379X 193 850V C.T. @ 173ma. 50 5V C.T. @ 3A 6.3V C.T. @ 5A - - X22 1$155.999Buy Now
382X 283 1,000V C.T. @ 230ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A - - X15 7$187.198Buy Now
384X 329 1,200V C.T. @ 230mA 50 5V @ 3A 6.3V @ 3A 6.3V @ 3A X15 6Buy Now

Horizontal Mount ("Z" mounting)

Part No. VA A.C. Bias Tap on High Filament #1 Filament #2 Dimensions Quantity Price Buy Now
High Voltage Voltage secondary
Secondary with C.T Grounded  
R.M.S. (VAC) (VAC) (VAC) A B C D F G H J  
370DAZ 76 520V C.T. @ 104ma. 50 6.3V C.T. @ 3.5A - 2.25 2.81 3.50 2.50 2.44 1.30 3.38 2.81 6$89.142Buy Now
373AZ 49 650V C.T. @ 46ma. 50 5V C.T. @ 2A 6.3V C.T. @ 2A 2.50 2.81 3.45 1.87 2.44 1.25 3.38 2.81 5$98.056Buy Now
373CZ 159 650V C.T. @ 173ma. 50 5V C.T. @ 3A 6.3V C.T. @ 5A 2.50 3.15 4.08 2.06 2.69 1.84 3.75 3.13 8$155.999Buy Now
373DZ 101 700V C.T. @ 104ma. 50 5V C.T. @ 2A 6.3V C.T. @ 3A 2.50 3.15 3.60 2.06 2.69 1.39 3.75 3.13 1$127.027Buy Now
369KZ 188 450V C.T. @ 300 ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A 2.50 3.12 4.25 2.06 2.69 2.06 3.75 3.12    
370KZ 218 500V C.T. @ 300 ma. 50 5V C.T. @ 6A 6.3V C.T. @ 6A 3.00 3.75 4.06 2.59 3.38 1.81 4.50 3.75    

Vertical Mount ("X" mounting)

Mtg. Dimensions G - Mtg. Slot
Style A B C D E
X6 2.50 2.75 3.06 2.00 1.69 .203 X .38
X7 2.50 3.00 3.06 2.00 1.94 .203 X .38
X8 2.50 3.25 3.06 2.00 2.19 .203 X .38
X9 2.50 3.75 3.06 2.00 2.69 .203 X .38
X10 3.13 3.50 3.81 2.50 2.19 .203 X .38
X11 3.13 3.75 3.81 2.50 2.44 .203 X .38
X13 3.75 4.00 4.56 3.00 2.81 .203 X .38
X14 3.75 4.50 4.56 3.00 3.31 .203 X .38
X15 3.75 5.00 4.56 3.00 3.81 .203 X .38
X19 3.13 4.00 3.81 2.50 2.69 .203 X .38
X20 3.13 4.25 3.81 2.50 2.94 .203 X .38
X21 4.38 5.60 5.30 3.50 4.00 .281 X .625
X22 3.75 4.19 4.56 3.00 3.06 .203 X .38
X23 4.38 4.85 5.30 3.50 3.25 .281 X .625
X24 4.38 5.10 5.30 3.50 3.50 .281 X .625
X25 4.38 6.10 5.30 3.50 4.50 .281 X .625
X26 5.28 6.60 6.36 4.25 5.00 .281 X .750

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Data subject to change without notice.