Emitters (ultrasonic) are actively used in echo sounders. Additional devices are used in receivers. Modern modifications are distinguished by high frequency and have good conductivity. The sensitivity of the emitter depends on many factors. It is also worth noting that the models use terminals that affect the overall resistance level.
Device Diagram
Standard device circuit contains two terminals and one capacitor. The rod is used with a diameter of 1.2 cm. The magnet for the operation of the system will require a neodymium type. At the bottom of any emitter is a stand. Capacitors can be attached through an expander or terminals. The winding of the selenoid is used with a conductivity of 4 microns.
Ring modification
Ring submersible ultrasonic transducers, as a rule, are made for echo sounders. Most models have dipole capacitors. Linings under them are selected from rubber. The total resistance level in devices of this type is 50 ohms. Terminals are used withadapter and without it. At the top of the selenoid is a protective ring. The rod is used with a diameter of at least 2.2 cm. In some cases, channel-type capacitors with a protection system are used. Their discharge conductivity is at least 5 microns. In this case, the frequency can vary greatly. In this case, much depends on the sensitivity of the element.
Yar device
The ultrasonic emitter for the yar humidifier is considered to be very common. If we consider the standard model, then it has three capacitors. As a rule, they are used in the three-channel type. The total resistance level for emitters of this type is 55 ohms. They are often placed on echo sounders and low frequency receivers. Also models are suitable for converters. Magnets are used with a diameter of 4.5 cm. Stands are made of brass or steel. The discharge conductivity is not more than 5.2 Mk.
Some modifications are used with the top position of the yar. As a rule, it is located above the stand. It should also be noted that there are emitters with single-pole adapters. Solenoids are suitable for them only with high conductivity. Several rings are used on the top of the device. The discharge sensitivity is approximately 10 mV. If we consider modifications on resistor capacitors, then their total resistance level reaches a maximum of 55 ohms.
Double wound model
Emitters (ultrasonic) with double winding have recently been produced with an amplifier. Such devices are widely used inconverters. Some emitters are made with double capacitors. Windings are used with a wide tape. The rods are suitable with a diameter of 1.3 cm. The terminals must have a conductivity of at least 5 microns. The frequency of devices depends on many factors. First of all, the diameter of the rod is taken into account. It should also be noted that the expanders are used with and without pads.
DIY reflector emitters
From reflectors you can make an ultrasonic emitter with your own hands. First of all, a neodymium magnet is prepared. The stand is used with a width of about 4.5 cm. Stroke is allowed to be installed only after the rod. It should also be noted that the magnet is fixed on the lining and closed with a ring.
Terminals for the device are selected conductor type. Conductivity during discharge should be about 6 microns. The total resistance level for emitters of this type is no more than 55 ohms. Capacitors are used in different types. Directly reflectors are selected small thickness. To install the elements will have to use a blowtorch. The upper part of the rod is twisted on the film. In this case, it is important not to overlap the terminals.
Devices for echo sounders
Emitters (ultrasonic) for echo sounders have good conductivity. The diameter of the rod for the standard model is 2.4 cm. Rings are usually used in a tight-fitting type. Modern models are made with conical stands. They are light in weight and can work in conditionshigh humidity. Solenoids are used in different diameters. Electrical tape must be wound at the bottom of the devices. If necessary, the emitter for the echo sounder can be made independently. Capacitors for this purpose are used of a two-channel type. If we consider a device with a 2.2 cm rod, then its total resistance level will be 45 ohms.
Modifications for fish finders
Emitters (ultrasonic) for fish finders are produced with terminals of different conductivity. The most popular are modifications with adapters and sensitivity at the level of 12 mV. Some devices are equipped with compact single-channel capacitors. Their conductivity when loaded is 2 microns. Magnets on emitters are installed with different diameters.
Most models are made with low stands. It should also be noted that the devices are distinguished by high frequency. The terminals have good conductivity, but in this case a lot depends on the thickness of the rod. Protective rings are installed in the upper part of the winding. To increase the conductivity of the emitter, terminals with a sensitivity of 15 mV or more are used.
Low impedance models
Ultrasonic emitter for air humidifier with low wave impedance stands out with its compact size. Windings are used with a thickness of 0.2 cm. Magnets are installed on stands or linings. Terminals are fixed at the topdevices. The standard modification includes three capacitors.
The indicator of the total resistance is not more than 30 ohms. Capacitors for some models are used in a two-channel type. In this case, the conductivity is approximately 2 microns. There are also modifications with large diameter rods. They are used in echo sounders. Most emitters are made specifically for transducers. Clamp rings are made of rubber or plastic. On average, the rod diameter of the modification is 2.2 cm.
High Impedance Devices
Modifications of this type are usually made for receivers. Their total conductivity level is 4 microns. Most devices operate from contact terminals. It should also be noted that there are devices with a sensitivity of 15 mV. Capacitors for modification are selected three-channel type. There are also resistor models. They have a common resistance level starting at 55 ohms. Magnets on a powerful ultrasonic emitter are installed only neodymium type. The average part diameter is 4.5 cm. Stands can be produced with pads or protective insulating films.
Models with unijunction capacitors
Devices of this type are capable of providing conductivity at the level of 5 microns. They have a fairly high sensitivity. The rods on the ultrasonic emitter are installed with a diameter of 2 cm. Windings are used only with rubber rings. In the lower partdevices use dipole terminals. The total resistance level when loaded is 5 ohms. Capacitors are allowed to be installed on emitters through expanders. Adapters are used to extend low frequencies.
If necessary, you can make a modification to two capacitors. For this, the terminals are installed with a conductivity of 2.2 microns. The rod is selected with a small diameter. It should also be noted that a short aluminum alloy stand is required. Electrical tape is used as insulation for the terminals. Two rings are attached to the top of the emitter. The capacitors are directly mounted through a dipole expander. The total resistance level should not exceed 35 ohms. Sensitivity depends on the conductivity of the terminals.
