Power Factor Meter Principle
A power factor meter is a type of electrodynamometer movement when it is made with two movable coils set at right angles to each other. The method of connection of…
Ampere Hour Meter
The ampere-hour meter registers ampere-hours and is an integrating meter similar to the watt-hour meter used to measure electricity usage in a home. Typical ampere-hour meters are digital indicators similar…
Three Phase Wattmeter
Total power in a 3φ circuit is the sum of the powers of the separate phases. The total power could be measured by placing a wattmeter in each phase (below…
Count and Pack Objects from Conveyor using PLC Ladder Logic
This is a PLC Program to count and pack objects from the conveyor. Learn the PLC programming with this example problem and solution.
PLC Program to Drain Same Products from Two Tanks
This is a PLC Program to drain the same products from two tanks. Learn the PLC programming with this simple example.
Wattmeter
The wattmeter is an instrument which measures DC power or true AC power. The wattmeter uses fixed coils to indicate current, while the movable coil indicates voltage (as shown in…
Ohm Meter
The ohm meter is an instrument used to determine resistance. A simple ohm meter (Below Figure) consists of a battery, a meter movement calibrated in ohms, and a variable resistor.…
How to implement SR Flip Flop using PLC Ladder Logic
This is the PLC Program to implement SR flip flop in PLC. Learn the PLC programming with this example logic.
Ammeter
The ammeter measures electric current. It may be calibrated in amperes, milliamperes, or microamperes. In order to measure current, the ammeter must be placed in series with the circuit to…
Voltmeters
A simple DC voltmeter can be constructed by placing a resistor (RS), called a multiplier, in series with the ammeter meter movement, and marking the meter face to read voltage…
