What is the speedometer generator?

The speedometer generator is a tool that measures the shaft rotation speed using an internally generated electrical signal. This reference signal or voltage is generated by providing a direct connection to the shaft with a rotating internal generator at the same speed as the shaft. The generated voltage is then read by the tachometer circuits and displayed on the deduction or brought to an external device such as the speed control. The devices are accurately calibrated and the accurate generator output voltage at any given speed is a known factor that causes accurate speed rotation values. Regarding operation and construction, speedometer generators fall into three basic categories: direct current (DC), AC current (AC) and permanent magnet types.

The exact speed of rotation speeds are decisive for the proper operation of many machines, especially in terms of variable load and power inputs. Installation equipment as engine speed controllers often use GE output voltageThe speedometer's non -reservoir as a link to control the speed of the engine it controls. These small generators are powered by engine or machines output shafts either using a direct connection that gives a rotary ratio of 1: 1 or carefully calibrated auxiliary drive. As the machine rotates, it is controlled by a generator that produces a voltage that differs in size and frequency according to the speed of rotation. This voltage is then sent to a deducted device or engine speed controller.

The basic constructions of all types of speedometer generator closely monitor conventional electric motors with rotor, which rotates in the stationery stator. DC Tachometers have a set of permanent magnets around the inner surface of the stator and a rotor with several sets of windings connected to the commutator. When the rotor is turned inside the stator, the electric current is generated in its winding. This current is transferred from the speedometer using a carbon card setAh that runs on a commutator.

AC types have two sets of wire coils in the stator, one of which comes with an alternating current. This induces the secondary voltage in the second coil similar to the secondary coil in the transformer. The AC speedometer rotor offers a short -circuit path for AC -like rotor in the squirrel cage engines. When the rotor is turned into two stator windings, it affects the relationship between the primary and secondary winding, which in turn affects the secondary voltage. This means that the secondary voltage depends on the speed at which the rotor rotates, giving the known reference voltage to measure the speed of the rotary machine.

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Permanent Magnet generator is in operation a similar type of DC, except for the reversed arrangement of the magnet set on the rotor and coil in the stator. When the rotor rotates inside the stator, the electrical reference current is induced on the stator winding. In all three cases, the voltage produced by the speedometer generator directly proportional to the speed at which OTáčí. This allows independent circuits to either display the speed of rotation in a graphical reading or use information as a link to check the speed of the machine.