Hammond PWDP13009 Alpha 77S-4 Power Transformer, 0-2400-3400V
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224-955-1644Key Features
- Power transformer for the Alpha 77S-4
- High voltage 0-2400-3400V at 0.9A
- 5V at 20A, 50V at 1.0A and 44VCT at 0.5A windings
- 120/240 VAC primary; label reads 50/60HZ
- HV outputs on 9 pin connector, all others on 15 pin connector
- Shipping weight 49 lbs (22.23 kg)
- Made in Canada; REACH and RoHS compliant
The PWDP13009 is the power transformer for the Alpha 77S-4 linear amplifier, from the Peter W. Dahl custom transformer files. It is intended for Alpha owners and amplifier technicians who need the complete multi-winding supply transformer for the 77S-4.
The drawing shows a 120/240 VAC primary; the schematic marks it 60 Hz while the label reads 120/240V 50/60HZ. The secondaries are 0-2400-3400V at 0.9A (red leads), 5.0V at 20.0A (green), 50V at 1.0A (orange) and 44VCT at 0.5A (yellow). Primary leads are black.
Connections are made through two connectors: the high-voltage outputs are in the 9 pin connector, and all other inputs and outputs are in the 15 pin connector. The drawing specifies #14 TEF leads for the primary and 5V winding, #18 TEF for the 50V and 44VCT windings and #18 SIL for the high-voltage winding.
PWDP13009 has a shipping weight of 49 lbs (22.23 kg). The label marks it Made in Canada. It is REACH compliant and RoHS compliant, with UPC 623980298368 and UNSPSC 39121301. Dahl units are usually built to order one at a time; confirm availability by phone or e-mail. Stock units can usually be shipped next business day.
Ideal For
- Alpha 77S-4 amplifier repair
- High-voltage linear amplifier supply
- Amateur radio amplifier restoration
Overview
| Series | Peter W Dahl Transformers (PWDAHL Series) |
| Part Number | PWDP13009 |
| Product Type | Power Transformer |
| Series Focus | Magnetics for Amateur Radio Products |
| Country Of Origin | Made in Canada (per drawing label) |
| Short Description | ALPHA A77S-4 POWER TX. |
| Equipment Application | Alpha 77S-4 |
Electrical
| Primary | 120/240 VAC, black leads |
| Secondary (Green) | 5.0V @ 20.0A |
| Secondary (Orange) | 50V @ 1.0A |
| Secondary (Yellow) | 44VCT @ 0.5A |
| Primary Rating (Label) | 120/240V 50/60HZ |
| High Voltage Secondary (Red) | 0-2400-3400V @ 0.9A |
| Primary Frequency (Schematic) | 60 HZ |
Identifiers
| UPC | 623980298368 |
| UNSPSC | 39121301 |
Packaging & Shipping
| Shipping Weight | 49 lbs (22.23 kg) |
Construction & Finish
| Connectors | High voltage outputs in 9 pin connector; all other inputs and outputs in 15 pin connector |
| Primary Leads | #14 TEF BLACK |
| 5V Winding Leads | #14 TEF GREEN |
| 50V Winding Leads | #18 TEF ORANGE |
| High Voltage Leads | #18 SIL RED |
| 44VCT Winding Leads | #18 TEF YELLOW |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What amplifier is PWDP13009 for?▾
The Alpha 77S-4.
What voltages does it supply?▾
0-2400-3400V at 0.9A, 5.0V at 20.0A, 50V at 1.0A and 44VCT at 0.5A.
How are connections made?▾
High-voltage outputs are on a 9 pin connector; all other inputs and outputs are on a 15 pin connector.
Does it work on 50 Hz?▾
The label on the drawing reads 120/240V 50/60HZ, while the schematic notes 60 Hz; confirm with the manufacturer for 50 Hz use.
How heavy is it?▾
The shipping weight is 49 lbs (22.23 kg).
Is this transformer kept in stock?▾
The series notes that these transformers are usually built to order one at a time, and that stock units can usually be shipped next business day. Confirming availability by phone or e-mail is recommended.
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