RD7
TRIPLE INSULATED SECONDARY TRANSFORMER CONSTRUCTION
{ TAPE
{ TAPE
6, 7
9, 10
3
4
1
2
SECONDARY
BIAS
PRIMARY
WINDING INSTRUCTIONS
Primary
Start at Pin 2. Wind one complete layer (about 58 turns)
of 37 AWG heavy nyleze wire from left to right. Insulate
first layer using 1 turn of polyester film tape, 8.3 mm
wide, 0.056 mm thick. Wind remaining 58 turns from
right to left for a total of 116 turns. Finish at Pin 1.
Basic Insulation
Apply 1 layer of tape for basic insulation.
Bias Winding
Start at Pin 4. Wind 14 turns parallel bifilar of 37 AWG
wire from left to right in a single layer. Finish at Pin 3.
Basic Insulation
Apply 1 layer of tape for basic insulation.
Secondary Winding
Start at Pins 9, 10. Wind 6 turns parallel bifilar of 26 AWG
triple insulated wire from left to right. Finish on Pin 6, 7.
Outer Insulation
Apply 3 layers of tape for basic insulation.
Final Assembly
Assemble and secure core halves.
Impregnate uniformly with varnish.
* Triple insulated wire sources.
P/N: T27A01TXXX-3
Rubudue Wire Company
5150 E. La Palma Avenue
Suite 108
Anaheim Hills, CA 92807
(714) 693-5512
(714) 693-5515 FAX
P/N: order by description
Furukawa Electric America, Inc.
200 Westpark Drive
Suite 190
Peachtree City, GA 30269
(770) 487-1234
(770) 487-9910 FAX
P/N: order by description
The Furukawa Electric Co., Ltd
6-1, Marunouchi 2-chome,
Chiyoda-ku, Tokyo 100, Japan
81-3-3286-3226
81-3-3286-3747 FAX
Figure 14. Construction Details of Transformer TRD7.
PI-2275-070298
8
B
4/99