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Tape Wrapped Coils |
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Self Supporting or Bobbin Wound Dry Coils:
 Self Supporting:
- Usually used in low volume where a stock
bobbin is not available
- Wound on a mandrel
- No available room for a bobbin
- Depending upon configuration, wire size
and number of turns, the coil may require “bondable” magnet
wire - the layers of wire are bonded together
by heat, chemical or electrical bonding
- Could be used in very high volume- over
300,000 /yr where specialized winding and
material handling would assist in automation
Bobbin and/or Tube Wound Coils:
- Higher insulation value from magnetic frame-core
- Lower material handling risk-damage to magnet wire
- Better platform for providing varistors,
diodes and strain relief between the magnet
wire and lead wire
Coils Vacuum Impregnated with Varnish:
- Proven method for moisture resistance and reducing vibration impact
- Varnish is pulled in to the center of the coil at –27”–29” Hg
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