Dual-Polarity Power Supply
AssemblyTransformer-based isolated supply delivering ±15 V (or ±18 V) with active ripple filtering, maintaining sub-microvolt noise floor. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Dual-Polarity Power Supply parts and their functions
7 top-level parts · 9 parts in total · full bill of materials below
| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | Power Transformer | 1× | Toroidal transformer, dual secondary for ±15 V |
| 2 | Rectifier Assembly | 1× | Bridge rectifier with ultra-low phase noise |
| 3 | Supply Filter Capacitor | 2× | Large electrolytic capacitors per rail (4700 µF) |
| 4 | Voltage Regulator IC | 2× | Precision regulators for each rail (LM317/LM337 or equivalent) |
| 5 | Active Supply Filter | 1× | RC or active filter reducing supply ripple below noise floor |
| 6 | Thermal Fuse | 1× | Protection against over-current |
| 7 | Connector | 1× | IEC C14 AC inlet with rocker switch |
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Bill of materials for Dual-Polarity Power Supply
7 top-level lines · 7 rows shown · 9 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Power Transformer | phono-preamp-mains-transformer | 1× | 1 | · | part |
| 2 | Rectifier Assembly | phono-preamp-rectifier | 1× | 1 | · | part |
| 3 | Supply Filter Capacitor | phono-preamp-filter-capacitor | 2× | 2 | · | part |
| 4 | Voltage Regulator IC | phono-preamp-reg-ic | 2× | 2 | · | part |
| 5 | Active Supply Filter | phono-preamp-active-filter | 1× | 1 | · | part |
| 6 | Thermal Fuse | thermal-fuse | 1× | 1 | · | part |
| 7 | Connector | connector | 1× | 1 | · | part |
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Where the dual-polarity power supply is used
1 product across 1 domain contain it, directly or inside a sub-assemblyUsed in 1 assembly
Sourcing: possible vendors
Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
|
🇨🇳Foxconn
foxconn.com ↗
|
Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| flex.com ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| dixoninfo.com ↗ | Noida, IN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| bydelectronic.com ↗ | Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| venture.com.sg ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |