T60403-D4721-X037Transformer audio and signal brand new original importTransformers Audio & Signal Ignition Transf PTH 2:1 250uVs 600V
Transformers Audio & Signal Transf PTH 1:1:1 250uVs 500V
Drive transformers for IGBTs - insulation voltage up to 500 Vrms
In recent years, power electronics has had a decisive impact on the generation, distribution and conversion of electrical energy. Modern semiconductors enable fast and safe control and conversion of electrical energy with low losses. Key factors for progress in this area are shutdown power semiconductors such as IGBTs (insulated-gate bipolar transistors), MOSFETs (metal-oxide semiconductor field effect transistors), and GTO (gate-off thyristors). VAC products are an important factor in maintaining the efficiency and safety of semiconductor switching and low-loss power transmission.
Higher switching frequencies, higher blocking voltages and switching powers affect how semiconductors are activated and controlled, enabling safe and simple switching. The drive transformer ensures current separation while also providing switching signals and/or energy to the semiconductor drive circuitry.
Some requirements must be met:
• High dielectric strength
• Low coupling capacitance with high immunity to interference
• Compact design
• Low leakage inductance for high pulse accuracy
• Transmission of switching power supply
• Wide operating temperature range (e.g. -40°C to +105°C)
• National and international standards such as EN 50178, IEC 61800, UL508, IEC 62109, UL1741
Transformer properties:
• SMD up to 1200 V DC; PTH up to 8.5 kV rms
• Low number of revolutions
• SMD solutions available
• Lower number of revolutions; High permeability
• Usually 2 to 20 watts
• Permeability varies low and linear with temperature
• Performance designed according to relevant standards, verified by inspection and type tests
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