PL-22, -23, -24, -42, -43, -44
Vishay Dale
Low Power Transformers
Dual Primary - Dual secondary
115/230 Volts
FEATURES
• PC pin mounting.
PL-22, PL-23, PL-24
• Provides isolation from power line.
• Dual Primary for operation at 115V or 230V, 50/60Hz.
• Dual Secondary for series connection obtains twice winding voltage with
center tap or for parallel connection obtains twice winding current rating.
• Modification to these standard items are available as specialty products.
• Laminated construction for low-cost industrial applications, including power
supplies, controls and instrumentation.
• Mounting brackets and bobbin standoff are available.
• PL-22, PL-23, PL-24: Concentric windings for increased coupling, decreased
leakage reactance and improved regulation.
• PL-42, PL-43, PL-44: Split-section winding for increased dielectric strength
between primary and secondary windings plus reduced interwinding
capacitance.
PL-42, PL-43, PL-44
ELECTRICAL SPECIFICATIONS
SCHEMATICS
Input Voltage: 115V 60Hz or 230V 50-60Hz.
Basic Style
Output Power Rating:
PL-22, PL-42 = 1.5VA.
PL-23, PL-43 = 4.5VA.
PL-24, PL-44 = 10.0VA.
5
1
6
7
2
3
8
4
Dielectric Strength: Between primary windings and
secondary windings and core:
PL-22, PL-23, PL-24 = 1500V.
Options
PL-42, PL-43, PL-44 = 2500V.
5
5
6
Between secondary windings to core: All units = 1000V.
From primary to primary windings: All units = 500V.
From secondary to secondary windings: All units = 500V.
1
1
2
Volts
Output
6
7
2
230V
Input
3
7
3
8
4
8
4
MECHANICAL SPECIFICATIONS
Primary Series
Connected
Secondary
Series Connected
Temperature Class:
PL-22, PL-23, PL-24: Insulation Class A, 105°C.
PL-42, PL-43, PL-44: Insulation Class B, 130°C;
A UL approved Class B Insulation System can be
furnished on request.
5
1
5
1
2
6
6
7
2
3
7
115V
Input
3
Volts
Output
Terminals: Brass, solder coated.
4
8
4
8
Weight: (reference)
Primary
Parallel Connected
Secondary
Parallel Connected
PL-22, PL-42 = 100 grams.
PL-23, PL-43 = 160 grams.
PL-24, PL-44 = 240 grams.
Document Number 34072
Revision 11-Dec-02
For technical questions, contact: Magnetics@vishay.com
www.vishay.com
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