70021 ACME ELECTRIC, 70021 Datasheet - Page 8

• Manufacturer Part Number: 70021
• Description: Toroidal Transformer
• Manufacturer: ACME ELECTRIC

Specifications of 70021

• Power Rating: 5VA
• Secondary Voltages: 2 X 9V
• Secondary Current Nom: 2mA
• Transformer Mounting: PC Board
• Weight: 144g
• Transformer Type: Toroidal
• Secondary Current Aac: 278mA
• Output Current, Secondary Series: 278mA
• Frequency: 60Hz
• Output Current: 278mA
• Rohs Compliant: Yes
• Primary Voltages: 2 X 115V
• Mounting Type: PC Board
• Features: Low Profile
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Weight Comparison: Toroid vs. E-I Transformer
Completing a “King-size” Toroid
COMPARISON DATA
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Height
Width
Depth
Volume
Dimensional
Adaptability
Weight
Mounting
Requirements
No-load Loss
Continuity of
Magnetic Path
Air Gaps
Magnetic
Properties
of Core
Coupling Factor
Long-term
Reliability
Overall Comparison of 250 VA E-I Core Isolation Transformer
Feature
vs. 250 VA E/I-Core AMVECO Isolation Transformer
E-I Core Transformer
78.8 sq. in. (508.4 cm
welding, banding, etc.
degrade performance
Affected by clamping
Thermal cycling and
(60 laminations x 3)
Approximately 180
Limited by bobbin
Four corner bolts
vibration steadily
width and layers
4.7" (119 mm)
4.3" (109 mm)
perpendicular
10 lb. (4.5 kg)
3.9" (99 mm)
available dies
50% of grain
of windings
Limited by
10.0 W
2
)
35.0 sq. in. (225.8 cm
winding distribution
winding and remain
Optimized prior to
Maximized by even
All dimensions can
& close proximity
Lifetime Warranty
grain orientation
through center
4.5" (114 mm)
4.5" (114 mm)
2.2" (56 mm)
100% parallel
5 lb. (2.3 kg)
be adjusted
Single bolt
AMVECO
to core
stable
1.5 W
None
2
)
6