Q meter block diagram. The oscillator drives a current through a low value of resistance r sh. The q meter works on series resonant. Boonton 260 a and hp q meters duration. Lcr q meter block diagram the application is packed with capabilities enabling you to definitely do such things as downloading epubs handling metadata downloading covers for books transferring books from a single system to another and also converting books from just one format to otherthis is really a massive list of the nice internet sites for ebooks many thanks for sharing those.
It consists of an oscillator which works in the frequency range of 50 khz to 50 mhz. For providing ac excitation the oscillator is used in the circuit. On the contrary the ac measurements require excitation of the wheatstone bridge with ac signal. A thermocouple meter is connected across the resistance to measure the voltage across it.
Working of lcr meter. Working principle of q meter. Circuit diagram of q meter 2. When block diagrams are used in electrical engineering the arrows connecting components represent the direction of signal flow through the system.
The value of the shunt resistance may be typically 02 w. Questions answers what is quality. Q meter is an instrument designed for measuring quality factor q of a coil as well as for the measurement of inductance capacitance and resistance of an electric circuit at radio frequency. Pulse width modulation basic concept and block diagram of pwm duration.
The ratio of the inductive reactance to the effective resistance of the coil is called the quality factor or q factor of the coil. The q meter uses in a laboratory for testing the radio frequency of the coils. The block schematic diagram of a q meter is shown in figure. The q meter measures the quality factor of the circuit which shows the total energy dissipated by it.
The above block diagram clearly defines the connection diagram of the lcr meter. So q xl r wl r. The measurement of dc quantities will be done by exciting the bridge with dc voltage. The wide range oscillator with frequency range from 50 khz to 50 mhz delivers current to a resistance r sh having a value of 002 w.
Whatever any specific block represents should be. This shunt resistance introduces almost no resistance into the tank circuit and therefore represents a voltage source of a magnitude e with a small internal resistance. Block diagrams use very basic geometric shapes. A practical q meter circuit diagram is shown in fig.
Q meter is also known as rlc meter. It generates the frequency of 1 khz. It also explains the properties of the coil and capacitor. The resonance is the condition exists in the circuit when their inductance and.
The radio mechanic 1439 views.