How Process Control Loop Works
A typical process control system is shown in Figure. Assume the physical variable to be controlled is the temperature. Basically Industrial process control loop consists of sensors, transmitters, Control systems (PLC/DCS),…
Different Types of Diodes
Types of Diodes: Small signal or Small current diode - These diodes assumes that the operating point is not affected because the signal is small. Large signal diodes - The…
Ethernet Bus Animation
Ethernet Bus: This is a coax based Ethernet network where all machines are daisy chained using RG58 coaxial cable (sometime referred to as Thin Ethernet or Thin-net). Machine 2 wants…
Three Phase Inverter Animation
Three Phase Inverter: The topology of a three-phase inverter consists of 3 legs; each leg includes a switch in either the up or down position. The resulting eight possible switching…
Electricity Magnetism
MAGNETISM There are several relationships between electricity and magnetism. We will explore them one by one. The first relationship we will discuss is how current flowing through a wire creates…
Summary Of Transistor Bias Circuits
In figures below, npn transistors are shown. Supply voltage polarities are reversed for pnp transistors.
Methods of Transistor Biasing
In the interest of simplicity and economy, it is desirable that transistor circuit should have a single source of supply—the one in the output circuit (i.e. VCC). The following are the…
Transistor Stabilisation
The collector current in a transistor changes rapidly when (i) the temperature changes, (ii) the transistor is replaced by another of the same type. This is due to the inherent…
Transistor Collector Feedback Bias
In Figure, the base resistor RB is connected to the collector rather than to VCC, as it was in the base bias arrangement discussed earlier. The collector voltage provides the bias for…
