Electronic transformers and semiconductor switching devices, semiconductor rectifier devices, capacitors together, known as the four main components in the power supply device. According to the role in the power supply device, electronic transformers can be divided into:
(1) Power supply transformers, power transformers, rectifier transformers, inverter transformers, switching transformers, pulse power transformers that play the role of voltage and power conversion;
(2) Broadband transformers for transmitting broadband, audio, mid-cycle power and signal functions, audio transformers, mid-cycle transformers;
(3) Pulse transformers, drive transformers and trigger transformers that transmit pulse, drive and trigger signals;
(4) The isolation transformer that acts as the primary side and the secondary side insulation and isolation, and the shielding transformer that acts as shielding;
(5) the phase number conversion transformer that changes the phase phase from single phase to three phase or three phase transition to single phase, and the phase conversion transformer that changes the output phase (phase shifter);
(6) Frequency doubling or frequency division transformers that change the output frequency;
(7) A matching transformer that changes the output impedance to match the load impedance;
(8) Stabilizing voltage transformers (including constant-voltage transformers) or stabilizing current transformers that stabilize output voltage or current, regulating voltage transformers that regulate output voltage;
(9) Filter inductors that play the role of AC and DC filtering;
(10) Electromagnetic interference filter inductors that inhibit electromagnetic interference, noise filter inductors that inhibit noise;
(11) An absorbing inductor for absorbing surge current and a buffer inductor for slowing down the rate of current change;
(12) An energy storage inductor that plays the role of energy storage, a reversing inductor that helps the semiconductor switch to reverse;
(13) Magnetic switching inductors and transformers that play a switching role;
(14) Controllable inductors and saturated inductors that play the role of adjusting inductance;
(15) Voltage transformer, current transformer, pulse transformer, DC transformer, zero flux transformer, weak current transformer, zero sequence current transformer, Hall current voltage detector from the conversion voltage, current or pulse detection signal.
It can be seen from the above listing that whether it is DC power supply, AC power supply, or special power supply, electronic transformers are inseparable.
Some people define the power supply as the DC power supply and the AC power supply transformed by the high-frequency switch. When introducing the role of soft magnetic components in power supply technology, various electromagnetic components in high frequency switching power supplies are often cited as examples.
At the same time, in the soft magnetic electromagnetic components used in electronic power supply, various transformers play a major role, so transformers are used as representatives of soft magnetic components in electronic power supply, and they are called “electronic transformers”.
The article information comes from the Internet
Post time: Jul-26-2024