transformer

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transformer

 [trans-for´mer]
an induction apparatus for changing electrical energy at one voltage and current to electrical energy at another voltage and current, through the medium of magnetic energy, without mechanical motion.
step-down transformer one for lowering the voltage of the original current.
step-up transformer one for raising the voltage of the original current.

transformer

[-fôr′mər]
Etymology: L, transformare, to change shape
an electric apparatus that changes alternating current of one voltage into a different voltage of the same frequency.

transformer,

n an electrical device that increases or reduces the voltage of an alternating current by mutual induction between primary and secondary coils or windings.
transformer, auto-,
transformer, Coolidge filament,
n.pr a step-down transformer that reduces line voltage of 110 volts to 12 volts, which in turn heats the tungsten filament of the Coolidge tube for the production of electrons.
transformer, step-down,
n a transformer in which the secondary voltage is less than the primary voltage.
transformer, step-up,
n a transformer in which the secondary voltage is greater than the primary voltage.

transformer

an induction apparatus for changing electrical energy at one voltage and current to electrical energy at another voltage and current, through the medium of magnetic energy, without mechanical motion.

transformer fluid
may cause poisoning due to its polychlorinated biphenyl content.
step-down transformer
one for lowering the voltage of the original current.
step-up transformer
one for raising the voltage of the original current.
References in periodicals archive ?
Our first optimization goal was to see how a gap between the nested primary and shorter secondary windings would affect the results.
sec] are number of primary and secondary windings turns, respectively, [U.
In selecting the inducting load to the secondary winding in the circuit of the transformer you muse uncheck the capacitor in the RLC branch of Figure 7 to select the inductive load than write the values of the inductor or capacitor you want of your desired.
s] and I are the RMS currents and voltages of the primary and secondary windings respectively.
The primary and secondary windings of the transformer may be a star or triangle are connected to the network.
Taking into account the above mentioned remarks, the block wave winding can serve as a basis for analysis of multiphase secondary windings not only for motors with a segment stator, but also for linear induction motors.
The secondary winding in Figure 1c has a center-tap, which makes the transformer useful as a balanced signal splitter; excellent amplitude and phase balance are obtainable with well designed RF transformers having this configuration.
Since the saturation network is also a short circuited secondary winding, but with a high resistance, a small current exists in and heats the metal in the saturation network.
The function of either is to make and break the primary circuit winding of the spark-coil, causing expansion and abrupt collapse of lines of magnetic force across the secondary winding of the coil, inducing a flow of current to, and a spark across the spark plug point-gap just before the engine piston reaches top dead-center during the fuel/air compression stroke.
Secondary winding is completely isolated allowing the optimization of protection schemes for each.
Frequency spectra of transformer secondary winding current is presented in Fig.