VTH12924-1300 - Mullard 3-3 stereo HT Transformer

Links


  • Order Code: VTH12924-1300.
  • Issue: 11.
  • Page Updated: 26 Aug 2019.
  • Change Request: X50599.
  • Release Note: Y11656.
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Specification

  • Primary: 10-0-200-220-240 VRMS 50/60Hz.
  • Output: 300-0-300 VRMS 160mA 6.3ct 2A 6.3V 1A Mullard 3-3 stereo.
  • Construction: Iron Laminated. Double insulated.
  • Treatment: Vacuum Varnish Impregnated.
  • Application: HT Anode and Heater supplies.
  • Range: Standard.

Mounting Arrangement

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Mechanical Dimensions

  • Size (SZ) = Patt78x1/1/4 DT.
  • Width (W) = 3 3/4 inch(95mm).
  • Depth (D) = 3 1/8 inch(79mm).
  • Height Above (HA) = 2 3/8 inch(60mm).
  • Height Below (HB) = 3/4 inch(19mm).
  • Fix Centres (FWxFD) = 3 1/8 inch x 2 1/2 inch(79mm x 64mm).
  • Cutout Hole (CWxED) = 2 1/2 inch x 1 7/8 inch(64mm x 48mm) Corrected.
  • Fix Size (FZ) = 3/16 inch(M4).
  • Weight (WT) = 4lb 3oz(1.9KG).

Circuit

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Connections

Function Connection
10 Volts Pin 17
0 Volts Pin 18
200 Volts Pin 22
220 Volts Pin 23
240 Volts Pin 24
HT Anode A Pin 16
HT Centre(Ground) Pin 15
HT Anode B Pin 14
Rectifier Filament A Pin 13
Rectifier Filament B Pin 12
Heater A Pin 11
Heater Centre Pin 10
Heater B Pin 9

Connection Layout

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Below


Application Notes


  • Safety note: Warning. This part may be connected to high voltage. Disconnect then discharge for 5 minutes before working on circuit.
  • See also Links on Left of this page.

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