LP-88-28

Power Transformers Overview

The LP-88-28 is a semi-toroidal power transformer manufactured by Signal Transformer. It features dual primary windings rated for 115 VAC and 230 VAC input voltages. The secondary configuration provides two independent outputs: one delivering 44 VAC at 56 mA, and the other providing 88 VAC at 28 mA. This component utilizes through-hole mounting with PC pin termination styles. It belongs to the LP series and is designed for general-purpose power applications requiring isolated voltage conversion.

Power Transformers Feature Summary

• Semi-toroidal construction utilizing hum-bucking design to minimize electromagnetic interference
• Dual primary winding capability supporting both 115 VAC and 230 VAC operational standards
• Dual secondary winding architecture providing separate independent voltage outputs

Power Transformers Applications

• General purpose AC to DC power supply circuits
• Industrial control panel power distribution
• Electronic equipment requiring isolated low-voltage secondary rails

Power Transformers Procurement Notes

Verify that the specific lot received matches the required insulation class and voltage ratings. Confirm physical dimensions align with PCB layout constraints, specifically the maximum height of 16.50 mm. Ensure terminal compatibility with standard through-hole assembly processes before finalizing procurement orders.

Power Transformers Selection Notes

Select this model when dual independent secondary voltages are required from a single transformer unit. The semi-toroidal design offers superior noise reduction compared to standard EI cores. Verify that the total secondary current demands do not exceed the individual winding limits of 56 mA and 28 mA respectively during peak operation.

Power Transformers Part Context

The LP-88-28 is part of the broader LP series of power transformers produced by Signal Transformer. This series is characterized by its use of semi-toroidal (hum-bucking) core technology. These components are widely utilized in applications where low acoustic noise and reduced magnetic field leakage are critical design requirements.

Power Transformers Replacement Considerations

Direct replacements must match the 115/230 VAC primary rating and the specific 44V@56mA / 88V@28mA secondary specifications. Alternative semi-toroidal transformers from other manufacturers may be considered if they meet the exact electrical and dimensional constraints.