Manufacture of custom wound components, chokes, coils, transformers, relays and assembly from a single piece
DSW Elektronik GmbH
91085 Weisendorf (headquarters)New on Amplifa
About DSW Elektronik GmbH
DSW Elektronik GmbH from Weisendorf near Nuremberg manufactures custom wound components: chokes, coils with and without bodies, transformers, transducers, relays and electronic assemblies. Production takes place in small and medium series from a single piece with no minimum order value, entirely in Germany. The portfolio includes air coils, toroidal, EI, UI and ETD ferrite-core transformers, self-bonded wire coils hot-air cured, RFID coils and layer winding of large coils up to 1.30 m diameter and 2 m length. Materials include enameled copper wire and self-bonding wire, copper strip, soft iron and ferrite cores, electrical sheet steel as well as aluminum, plastic and glass-fiber reinforced materials for in-house coil bodies from the company's own toolmaking with turning, milling and a 3-axis machining center. In addition, DSW offers assembly work, laser engraving and own products such as inrush current limiters, speed controllers and membrane keyboards. Customers come from railway technology, device manufacturing, metrology, power supply and consumer electronics.
- Site
- Weisendorf
- Processes
- Coil winding (wound goods, coils with and without bodies), Choke production (interference suppression chokes, choke coils), Transformer and transducer production (dry-type transformers, toroidal, EI, UI and, Relay production (PASI relays), Self-bonded wire winding with hot-air curing, Layer winding of large coils (up to 1.30 m diameter, up to 2 m length), Assembly work (device assembly, wiring, module assembly), Milling and drilling (small series, contract manufacturing)
- Materials
- Enamelled copper wire, Self-bonding wire, Copper strip, Aluminum, Plastic, Hard paper, Hard fabric laminate, Glass-fiber reinforced material
- Certificates
- DIN EN ISO 9001:2008, ISO 9001
- Founded
- 1983
- Industries
- Railway technology / public transport, Device manufacturing, Metrology, Power supplies / power supply units, Consumer electronics, Printed circuit board / electronics industry
- 01
Engineering and consulting
- 02
Toolmaking (turning, milling, 3-axis machining center)
- 03
Coil body production
- 04
Coil winding (manual and machine winding, self-bonded wire winding, layer
- 05
Relay and assembly production
- 06
Assembly
- 07
Laser engraving
- 08
Testing and shipping
Materials and processes
Enamelled copper wire
Standard winding wire for chokes, coils and transformer windings.
Self-bonding wire
Is hot-air cured so that dimensionally stable coils are created without bodies.
Copper strip
For transducers with high currents at low power losses.
Soft iron cores
For pulse and isolation transformers as well as Rogowski coils.
Ferrite cores (EI, UI, ETD, RM)
Core material for transducers, transformers and high-frequency windings.
Electrical sheet steel
Sheet cores made in Germany for dry-type transformers.
Aluminum
Material for coil bodies to customer specification.
Plastic
Material for milled coil bodies in the in-house toolmaking department.
Hard paper and hard fabric laminate
Material for stable coil bodies and test coils.
Glass-fiber reinforced material
For particularly stable coil bodies in one-off production and series.
Sites
Weisendorf
DEHeadquarters, administration and production
- Part weight / size
- Coils up to 1.30 m diameter, 2 m length
- Lot size
- Single piece to small/medium series
- Materials
- Enamelled copper wire, self-bonding wire, copper strip, soft iron/ferrite cores, electrical sheet steel, aluminum,
- 3-axis machining center (21-tool changer)
- Pleuger layer winding machine
- Toroidal winding machines
- Long-coil winding machine
- Unwinding system
- Laser engraving unit
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Coil winding (wound goods, coils with and without bodies)Assembly | – | – | – | 1 piece | Enamelled copper wire, Self-bonding wire, Copper strip |
| Choke production (interference suppression chokes, choke coils)Assembly | – | – | – | 1 piece | Enamelled copper wire |
| Transformer and transducer production (dry-type transformers, toroidal, EI, UI andAssembly | – | – | – | 1 piece | Enamelled copper wire, Copper strip, Soft iron cores, Ferrite cores, Electrical sheet steel |
| Relay production (PASI relays)Assembly | – | – | – | – | – |
| Self-bonded wire winding with hot-air curingAssembly | – | – | – | – | Self-bonding wire |
| Layer winding of large coils (up to 1.30 m diameter, up to 2 m length)Assembly | – | 2 m × 1.30 m diameter | – | – | Copper wire |
| Assembly work (device assembly, wiring, module assembly)Assembly | – | – | – | – | – |
| Milling and drilling (small series, contract manufacturing)Machining | – | – | – | – | – |
| TurningMachining | – | – | – | – | – |
| Toolmaking (in-house toolmaking, coil body production)Engineering | – | – | – | – | Aluminum, Plastic, Hard paper, Hard fabric laminate, Glass-fiber reinforced material |
| Laser engravingSurface treatment | – | – | – | – | – |
| Own products: inrush current limiters, speed controllers, membrane keyboardsAssembly | – | – | – | – | – |
6 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| 3-axis machining center | – | 1 | 21-tool changer | 1999 | Weisendorf |
| Toroidal winding machine | – | at least 2 | – | 2011/2012 | Weisendorf |
| Long-coil winding machine | – | 1 | – | 2011/2012 | Weisendorf |
| Layer winding machine | Pleuger | 1 | up to 1.30 m diameter, up to 2 m length | 2016 | Weisendorf |
| Laser engraving unit | – | 1 | – | 2011/2012 | Weisendorf |
| Unwinding system | – | 1 | – | – | Weisendorf |
Additional services
Reference customers
Quality
Production has been certified to DIN EN ISO 9001 since 2004. Test coils and assemblies are manufactured to customer specifications, also with temperature sensors.
| Evidence | Weisendorf |
|---|---|
| ISO 9001 |
Company history
- 1983
Founded by Horst and Anton Richter as well as Dipl.-Ing. Heinz-Jürgen Hendrich in Weisendorf; began with interference suppression chokes for consumer electronics.
- 1985
Expansion to include assembly work: fan heater assembly for AEG Nuremberg, wiring of small robots, component production for Carrera.
- 1987
Start of small-series production of custom-made transducers and transformers.
- 1992
Expansion of coil production; RFID coils and miniature coils.
- 1996
Production of dot-matrix displays for an outfitter of public transport vehicles; approximately 10 additional employees.
- 1997
Takeover of production of a large share of the PASI relays from PASI/Berlin (Schaltbau Group).
- 1999
Expansion by a 3-axis machining center; milling and drilling work for small series, start of coupling production for railway technology.
- 2002
Klaus and Winfried Richter take over the company shares of Horst Richter.
- 2004
Certification to DIN EN ISO 9001:2008.
- 2006
Klaus and Winfried Richter take over complete company management; Hendrich leaves the company.
- 2009
Crisis: jobs secured; introduction of own products (inrush current limiters, speed controllers, membrane keyboards).
- 2010
First own trade fair stand at the Hannover Messe.
- 2011/2012
Investments in a laser engraving unit, toroidal winding machine and long-coil winding machine.
- 2013
Renovation of the company buildings.
- 2014
Installation of a 25-kW solar system for own consumption and feed-in.
- 2016
Pleuger layer winding machine: coils up to 1.30 m diameter and 2 m length.
- 2017
First professional own trade fair appearance at PCIM Nuremberg.
- 2018
Second trade fair appearance at PCIM Nuremberg.