How to make a magnetostrictive radiator with your own hands: description, scheme and recommendations

To generate ultrasound, special magnetostrictive type radiators are used. The main parameters of the devices include resistance and conductivity. The allowable frequency value is also taken into account. The design of the device may differ. Also it should be noted that the models are actively used in echo sounders. To understand the emitters, it is important to consider their scheme.

Device Diagram

The standard magnetostrictive ultrasound emitter consists of a stand and a set of terminals. Directly the magnet is fed to the capacitor. There is a winding at the top of the device. A clamping ring is often installed at the base of the radiators. The magnet is suitable only for neodymium type. At the top of the models is a rod. To fix it, a ring is used.

Ring modification

Ring devices operate with a conductivity of 4 microns. Many models are made with short stands. It should also be noted that there are modifications to field capacitors. To collect the magnetostrictive radiator with your own hands, the coil of the solenoid is used. In this case, it is important to establish a low threshold voltage. A ferrite rod is more suitable for selecting a small diameter. The clamping ring is put in the last turn.

Device with a yarn

It is quite easy to make a magnetostrictive radiator by oneself. First of all, the rod for the rod is prepared. Further it is important to cut out the stand. You can use a metal disk for this. Experts say that the stand in diameter should be no more than 3.5 cm. The terminals for the device are selected at 20 V. At the top of the model, a ring is fixed. If necessary, you can rewind the electrical tape. The resistance index of the radiators of this type is in the region of 30 Ohm. They work with a conductivity of at least 5 microns. Winding in this case is not required.

Dual winding model

Devices with a double winding are produced in different diameters. The conductivity of the models is at the level of 4 microns. Most devices have high impedance. To make a magnetostrictive radiator with your own hands, only a steel stand is used. The isolator in this case is not required. The ferrite rod can be mounted on the lining. Specialists recommend pre-packing the O-ring. It should also be noted that a field-type capacitor is required to assemble the radiator. The input resistance of the model should not exceed 20 ohms. Windings are installed next to the rod.

Radiators based on reflector

Emitters of this type are distinguished by high conductivity. Models operate at 35 V. Many devices are equipped with field capacitors. Make a magnetostrictive radiator with your own hands is quite problematic. First of all, you need to pick up a rod of small diameter. In this case, the terminals are prepared with a conductivity of 4 microns.

The impedance of the device should be 45 ohms. The plate is mounted on a stand. The winding in this case must not touch the terminals. At the bottom of the device must be a circular stand. To fix the ring, a usual tape is often used. The condenser is soldered over the manganite. It should also be noted that the rings are sometimes used with overlays.

Devices for echo sounders

For echo sounders, a magnetostrictive ultrasonic radiator is often used. How to prepare a model yourself? Self-made modifications are made with a conductivity of 5 microns. The impedance of their average is 55 ohms. To make a powerful ultrasonic generator with your own hands, the rod is applied at 1.5 cm. The winding of the solenoid is wound with a small step.

Experts say that it is more expedient to select racks for radiators from stainless steel. In this case, the terminals are used with low conductivity. The capacitors are of different types. The limiting voltage of the emitters is at 14 watts. Rubber rings are used to fix the rod. At the base of the device, tape is wound. It is also worth noting that the magnet should be installed last.

Modifications for Fishermen

Devices for fishermen are collected only with wire capacitors. First you need to install a rack. It is more advisable to use rings with a diameter of 4.5 cm. The winding of the solenoid must fit snugly against the rod. Quite often, the capacitors are soldered at the base of the emitters. Some modifications are made to two terminals. Ferrite rod must be fixed on the insulator. To strengthen the ring is used tape.

Low-impedance models

Low-impedance devices operate at 12 V. Many models have two capacitors. In order to assemble an ultrasound generating device with your own hands, a 10 cm rod will be required. At the same time, the capacitors on the radiator are installed in a wired type. The winding is wound in the last turn. It should also be noted that a terminal is required to assemble the modification. In some cases, field capacitors of 4 microns are used. The frequency parameter will be quite high. It is better to install the magnet over the terminal.

High-impedance devices

Ultrasound transducers of high resistance are well suited for short wave receivers. Collect the device on its own can only be based on transient capacitors. In this case, the terminals are highly conductive. Quite often the magnet is mounted on a rack.

Stand for the radiator is used at low altitude. Also it should be noted that one rod is used to assemble the device. To isolate its base, an ordinary electrical tape is suitable. In the upper part of the radiator there must be a ring.

Rod devices

The scheme of the ultrasonic radiator of the rod type includes a conductor with a winding. Condensers are allowed to use different capacities. In this case, they can differ in conductivity. If we consider a simple model, the stand is prepared in a circular shape, and the terminals are set to 10 V. The winding of the solenoid is wound in the last turn. It should also be noted that the magnet is selected neodymium type.

The rod is directly applied to 2.2 cm. The terminals can be installed on the lining. It should also be mentioned that there are modifications to 12 V. If we consider devices with field capacitors of high capacity, then the minimum diameter of the rod is allowed 2.5 cm. In this case, the winding must be wound up to the insulation. A protective ring is installed in the upper part of the radiator. Stands are allowed to be made without a lining.

Models with unijunction capacitors

Radiators of this type give out conductivity at a level of 5 microns. At the same time, the wave impedance index reaches a maximum of 45 ohms. In order to independently manufacture the radiator, a small stand is prepared. At the top of the stand must be a rubber lining. It should also be noted that the magnet is prepared by the neodymium type.

Experts advise to install it on the glue. The terminals for the device are selected at 20 watts. Directly the condenser is installed over the cover plate. The rod is used with a diameter of 3.3 cm. At the bottom of the winding there must be a ring. If we consider models for two capacitors, then the rod can be used with a diameter of 3.5 cm. The winding must be wound up to the very base of the radiator. In the lower part of the drain tapes are glued. The magnet is installed in the middle of the rack. At the same time, the terminals must be on the sides.