Datasheet for Mullard 5-20 PP UL Output Transformer EL34 28 Watt 3300 ohms/valve VTP203200
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Specification
- Valve Type: EL34
- Primary Circuit Type: Ultra-pushpull-Univ
- Secondary Circuit Type: Univ-ls
- Valve Res.Load Anode (ohms): 3300
- Power Output Watts: 28
- Construction: Interleaved Grain Oriented Core
- Winding: Multiple Interleaved Sections
- Treatment: Vacuum Varnish Impregnated
- Application: Ultra Linear Push Pull Valve Power Output
- Range: Standard
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Mounting arrangement
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Mechanical Dimensions
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Size
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Width (W)
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Depth (D)
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Height (H)
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Core/frame (L)
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Fix Centres (FWxFHxFD)
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Fix Size
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Pin Length(P)
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Weight
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Patt78x1/1/4 FR
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3 7/8 inch(98mm)
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2 3/4 inch(70mm)
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3 1/4 inch(83mm)
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2 3/8 inch(60mm)
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2 1/2 inch x 2 1/2 inch x 1 7/8 inch(64mm x 64mm x 48mm)
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3/16 inch(M4)
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1/4 inch(6mm)
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Circuit
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Connections
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Function
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Connection
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Anode A
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Pin 16
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Ultra Linear (Grid) 43% A
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Pin 15
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Ultra Linear (Grid) 20% A
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Pin 14
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Centre Tap (Ht)
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Pin 13
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Ultra Linear (Grid) 20% B
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Pin 12
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Ultra Linear (Grid) 43% B
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Pin 11
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Anode B
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Pin 10
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Output common
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Pin 17
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Output 3 to 4 ohms
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Pin 18
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Output 7 to 8 ohms
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Pin 19
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Output 15 to 16 ohms
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Pin 20
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Application Notes
- Safety note: Warning. This part may be connected to high voltage. Disconnect then discharge for 5 minutes before working on circuit.
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