With the primary winding effectively across the battery, the current increases at a rate proportional to the supply voltage divided by the inductance.
22.
For example, a 4000 : 5 CT secondary winding will supply an output current of 5 amperes when the primary winding current is 4000 amperes.
23.
The ratio of turns in the secondary winding to the number of turns in the primary winding, is called the " turns ratio ".
24.
The primary winding of the transformer, fixed to the stator, is excited by a sinusoidal electric current, which by electromagnetic induction induces current in the rotor.
25.
Note that the high-voltage ( HV ) side always comes before the low-voltage ( LV ) side, regardless of which is the primary winding.
26.
The relay's primary winding is supplied from the power systems current transformer via a plug bridge, which is called the plug setting multiplier ( psm ).
27.
The incoming audio signal passes through a resistor ( A8 ) and the primary winding of the coil ( A3 ) which passes it to the speaker ( A1 ).
28.
At the same time, current exits the coil's primary winding and begins to charge up the capacitor ( condenser ) that lies across the open breaker points.
29.
The primary winding on the ferrite core, the core, and the discharge form a transformer, with the discharge being a one-turn secondary on that transformer.
30.
A varying current in the transformer's primary winding creates a varying magnetic flux in the transformer core and a varying field impinging on the transformer's secondary winding.
