There are three common cooling methods for rectifiers: natural cooling, pure fan cooling, a combination of natural cooling and fan cooling. Natural cooling has the characteristics of no mechanical failure, high reliability; no air flow, less dust, which is good for heat dissipation, and no noise. Pure fan cooling has light weight and low cost. The combination of fan and natural cooling technology has the characteristics of effectively reducing the size and weight of the equipment, long service life of the fan, and strong ability to adapt to fan failure.
The simplest voltage doubling rectification (double) method is to use two sets of simple half-wave rectifications to generate two power outputs with different positive and negative directions with oppositely directed diodes, and to filter them separately. Connect the positive and negative ends to get an output voltage twice the AC input voltage. This kind of circuit is called Delong circuit (German: Delon-Schaltung). If necessary, this circuit can also provide intermediate voltage or be used as a positive and negative dual voltage power supply.
The device that turns alternating current into direct current is called a rectifier.
According to the rectifier devices used, it can be divided into mechanical, electronic tube and semiconductor types. Inductive ballast is an iron core inductive coil. The nature of the inductance is that when the current in the coil changes, it will cause changes in the magnetic flux in the coil, resulting in induced electromotive force. Its direction is opposite to the direction of the current, thus hindering The current changes.
