designing of a low cost metal detector for demining project
... magnetism & listening between the pulses for signals due to eddy current set up in any metal object present in the field. Despite their sensitivity they have few important drawbacks. Their battery consumption is heavy due to the power required by the pulsed transmitter, and they are extremely sensit ...
... magnetism & listening between the pulses for signals due to eddy current set up in any metal object present in the field. Despite their sensitivity they have few important drawbacks. Their battery consumption is heavy due to the power required by the pulsed transmitter, and they are extremely sensit ...
Capacitive element based sensor
... shown in Figure 2.2.7, say, more in secondary coil 1 than in coil 2, then more emf is generated in one coil i.e. coil 1 than the other, and there is a resultant voltage from the coils. If the magnetic core is further displaced, then the value of resultant voltage increases in proportion with the dis ...
... shown in Figure 2.2.7, say, more in secondary coil 1 than in coil 2, then more emf is generated in one coil i.e. coil 1 than the other, and there is a resultant voltage from the coils. If the magnetic core is further displaced, then the value of resultant voltage increases in proportion with the dis ...
Solid State Timers and Controllers Switching
... Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . An inductive load is any device which has a coil of wire which, when energized, generally performs some kind of mechanical work. The magnetic field caused by the curre ...
... Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . An inductive load is any device which has a coil of wire which, when energized, generally performs some kind of mechanical work. The magnetic field caused by the curre ...
Characteristics of Series and Parallel Circuits
... Characteristics of parallel circuits: more than 1 path for current 1. current is different in different resistances, but the total current is equal to the sum of the currents in all the branches IT = I1 + I2 + I3 2. voltage is the same across all resistances VT = V1 = V2 =V3 3. total resistance is l ...
... Characteristics of parallel circuits: more than 1 path for current 1. current is different in different resistances, but the total current is equal to the sum of the currents in all the branches IT = I1 + I2 + I3 2. voltage is the same across all resistances VT = V1 = V2 =V3 3. total resistance is l ...
ElectromagneticInductionExperiments
... 1 x lab power supply set on 3V (see diagram); switch; bar magnet; 2.5V light bulb in holder; variable resistor; SHARED powerful magnet; pair of magnadur magnets with iron yoke (as used for the electric motor); 5 x ordinary wires. ...
... 1 x lab power supply set on 3V (see diagram); switch; bar magnet; 2.5V light bulb in holder; variable resistor; SHARED powerful magnet; pair of magnadur magnets with iron yoke (as used for the electric motor); 5 x ordinary wires. ...
Physics Review
... 14. Draw a circuit diagram that has three cells in series to each other, that has a second parallel branch that is identical to the first. All the cells that make up the battery are 1.5V. This battery is connected to a circuit that has three light bulbs. One bulb is series to the whole circuit, and ...
... 14. Draw a circuit diagram that has three cells in series to each other, that has a second parallel branch that is identical to the first. All the cells that make up the battery are 1.5V. This battery is connected to a circuit that has three light bulbs. One bulb is series to the whole circuit, and ...
Basic Electricity
... Multiplier (this times the first two digits !gives you the value in Pico-Farads) ...
... Multiplier (this times the first two digits !gives you the value in Pico-Farads) ...
Tutorial Number 01 file
... 5. A coil of 200 turns is rotated at 3000r/min in a magnetic field having a uniform density of 0.1T, the axis of rotation at right angles to the direction of the flux. The mean area per turn is 40cm2. Calculate The frequency, the period, the maximum value of the generated e.m.f.. The value o ...
... 5. A coil of 200 turns is rotated at 3000r/min in a magnetic field having a uniform density of 0.1T, the axis of rotation at right angles to the direction of the flux. The mean area per turn is 40cm2. Calculate The frequency, the period, the maximum value of the generated e.m.f.. The value o ...
Galvanometer
A galvanometer is a type of sensitive ammeter: an instrument for detecting electric current. It is an analog electromechanical actuator that produces a rotary deflection of some type of pointer in response to electric current through its coil in a magnetic field.Galvanometers were the first instruments used to detect and measure electric currents. Sensitive galvanometers were used to detect signals from long submarine cables, and to discover the electrical activity of the heart and brain. Some galvanometers use a solid pointer on a scale to show measurements; other very sensitive types use a miniature mirror and a beam of light to provide mechanical amplification of low-level signals. Initially a laboratory instrument relying on the Earth's own magnetic field to provide restoring force for the pointer, galvanometers were developed into compact, rugged, sensitive portable instruments essential to the development of electrotechnology. A type of galvanometer that records measurements permanently is the chart recorder. The term has expanded to include use of the same mechanism in recording, positioning, and servomechanism equipment.