PNP Transistor
Basically, in this type of transistor construction the two diodes are reversed with respect to the NPN type giving a Positive-Negative-Positive type of configuration, with the
Basically, in this type of transistor construction the two diodes are reversed with respect to the NPN type giving a Positive-Negative-Positive type of configuration, with the
When used as an AC signal amplifier, the transistors Base biasing voltage is applied in such a way that it always operates within its “active”
We have seen in this series of turorials about the transformer, that when the primary winding of a transformer is energised, it produces a secondary
In the previous tutorial we saw that the standard Bipolar Transistor or BJT, comes in two basic forms. An NPN (Negative-Positive-Negative) type and a PNP (<b”>Positive-Negative-Positive) type.</b”> The most commonly used
As well as stepping up (increase) or stepping down (decrease) a signal voltage, transformers also have one very other useful property, isolation. Since there is no
Thus far we have looked at the construction and operation of the single-phase, two winding voltage transformer which can be used increase or decrease its
Multiple Winding Transformers generally have one single primary winding with two or more secondary windings. But the beauty of transformers is that they allow us
Unlike the previous voltage transformer which has two electrically isolated windings called: the primary and the secondary, an Autotransformer has only one single voltage winding which is
The Current Transformer ( C.T. ), is a type of “instrument transformer” that is designed to produce an alternating current in its secondary winding which is proportional to the
This magnetic circuit, know more commonly as the “transformer core” is designed to provide a path for the magnetic field to flow around, which is
In the previous transformer tutorials, we have assumed that the transformer is ideal, that is one in which there are no core losses or copper
One of the main reasons that we use alternating AC voltages and currents in our homes and workplace’s is that AC supplies can be easily