Isolation Transformer

Isolation transformer transformer principle and the general principle is the same. Are the principle of Electric transformer induction. Isolation transformer generally refers to a 1:1 transformer. As the secondary is not connected to ground. Either a secondary line and the ground potential difference between the no. Safe to use. Commonly used for maintenance of power supply.
Incomplete isolation transformer is a 1:1 transformer. Control transformer and power tube equipment is isolation transformer. Such as tube amplifiers, tube radios, and oscilloscopes and lathe control Air circuit breaker are isolation transformer. As for safety maintenance than a TV used an isolation transformer. Isolation transformer is used more and more, is also used in the air conditioning.
General transformer primary and secondary windings, although there are isolated effect of the circuit, but in the case of high frequency, the capacitance between the two windings will remain static interference between the circuit side. In order to avoid such interference, the isolation transformer primary, secondary winding generally placed on a separate column of the heart to reduce the capacitance between the two; there is also the primary and secondary windings concentrically placed, but it is set in between the windings electrostatic shielding in order to obtain high anti-jamming features.
Electrostatic shield is in the primary and secondary windings are not closed between a non-magnetic conductive copper paper, called the shield. Copper or non-magnetic conductive paper with a wire circuit breakers to the housing. Sometimes, in order to achieve better shielding effect, in the transformer, but also cover a shielded enclosure. Lead terminals are also on the winding plus shielded to prevent other external electromagnetic interference. This allows the primary and secondary windings of the magnetic coupling between the main only, and distributed capacitance therebetween may be less than the equivalent of 0.01pF, and greatly reduce the primary and secondary windings between the capacitive current, effectively suppress other circuits from the power supply and all kinds of interference.