Filters (rectifiers) of the electric type are used in various devices to stabilize the input voltage. The principle of operation of the devices is based on lowering the operating frequency.
The standard model includes a controller, resistors, as well as tetrodes. Modifications are connected via contact adapters. The main parameters of the modifications include extreme overload, operating voltage and output impedance.
Device types
Today, there are various types of electric filters. First of all, they are divided by the operating frequency. Low-frequency devices are manufactured with several resistors and have low conductivity. Controllers are most often used in the wave type and are installed with capacitors. High-frequency modifications are made with collector adapters.
The voltage index for models of this type averages 200 V. By design, the filters are ceramic, piezoelectric and band-pass. Additionally there are notch modifications. By protection, active and anti-interference devices are distinguished.
Model Assignment
The low-pass filter electric, as a rule, is used in networks with alternating current. For power equipment, it does not fit well. High-pass filters are installed on conveyors and machine tools. They can be used in AC networks.
Ceramic and strip devices are mounted on toggle switches. They can also be found in ventilation systems. It is also important to note that active devices are used for pumping stations. An electric noise canceling filter is used in drive mechanisms.
Low frequency models
Recently, low-pass filters are often installed on conveyor devices. Modifications are directly connected via an adapter. The transistors of the models are set to 120 and 200 V. Directly, the working frequency of the filters fluctuates around 20 Hz. Models are not suitable for drive mechanisms.
It is also important to note that capacitors are used in devices of various types. On average, their maximum capacitance is 5 pF. If you trust the reviews of specialists, then the model is not suitable for toggle switches. The conductivity index for low-frequency modifications is not very high. They are made in a steel case. Modifications with two-pin outputs are very rare.
The use of high frequency devices
The high-pass electric filter is great for tumblers. Controllers in devices use wave type. Directly, the frequency of filters of this type reaches a maximum of 55 Hz. Models are poorly suited for ventilation systems. Do not install filters in an alternating current circuit. Devices with 3 pF capacitors are very rare. The output connectors are most often used three-pin type.
Triggers are found only in the distribution type. Models are connected to drives via comparators. The output voltage of the filters is on average 230 V. The sensitivity indicator in this case depends on the resistors. Connection to drive conveyors is carried out through a varistor. The specified item is most often used with multiple adapters. To increase the voltage, the high-pass filter has a stabilizer.
Piezoelectric Modifications
The piezoelectric type electric filter can only be used in AC networks. Resistors in devices are used wide-type. Varicaps are often captured with 3 pF capacitors. To connect filters to the tumblers, dampers are required. These devices are often installed with low impedance adapters.
The operating resistance of the filters in this series is 20 ohms. The frequency of the models in this case depends on the capacitors. Models are poorly suited for ventilation systems. Comparators in devices are used expansion type. Mesh adapters are rare for models. It is also important to note that the filters of this type are suitable for contact toggle switches.
Strip devices
Strip modifications are used for triggers. Devices of this type have good conductivity. Models with stabilizers are quite rare. Directly resistors are used at 5 pF. Varicaps for models are set to magnetic type. For contact toggle switches, devices are not the best way. It is also important to note that the models have a high sensitivity to pulsed vibrations.
To solve problems with phase activity, variable tetrodes are used. They are connected to the filters through the lining. To protect the resistors, insulators are used. For many models, the controller has a three-pin type. For pumping stations, devices are not suitable. In this case, the problem lies in the fast overheating of the capacitors.
Piezoceramic devices
Piezoceramic modifications are used for contact toggle switches. Also, models of this type are installed in conveyor devices. Models with selectors on the market are very rare. Comparators for modifications are made with triodes. These elements have a given conductivity. The voltage indicator in the network, as a rule, does not exceed 200 V. The frequency of the filter depends on the capacitors.
Notch devices
The notch filter (rectifier) is only suitable for drive mechanisms. Triodes for models are installed with a stabilizer. Transistors are often used without a covering. Thus, their conductivity parameter is extremely low. Capacitors are directly used at 4 pF.
It is also important to note that modifications of this type are not suitable for contact toggle switches. Dinistors are most often installed analog type, and their sensitivity is 12 mV. However, in this case, it is necessary to take into account the features of specific modifications.
Active models
An active filter (rectifier) is needed to stabilize the voltage at the output contactors. Elements of the specified type are caught in ventilation systems. Also, filters can be found in drive mechanisms of various capacities. Transistors in devices, as a rule, are used of a linear type, and their capacitance is on average 4 pF.
Filter covers are extremely rare. Connection to ventilation systems is through triodes. Modifications with binary converters are extremely rare. It is also important to note that active filters with a high conductivity threshold are on the market. For pumping stations, they fit great.
Interference Suppression Modifications
The noise suppression filter is often used in contact toggle switches. It is also suitable for conveyor devices of various capacities. On average, the filter frequency of this type is 35 Hz. Modifications with wave converters are quite common. It is also important to note that devices are connected via tetrodes. Capacitors for modifications are only captured at 4 pF.
The conductivity of these elements averages 2 microns. Channel tetrodes are quite rare. An anti-interference filter is connected to the toggle switches through adapters. To lower the voltage, stabilizers are installed. Many filters of this series have an adjustable contactor. Models are not suitable for pumping stations due to low sensitivity to impulse noise.
Pilot Series Devices
The Pilot filter is used for conveyor devices. The modification consists of field-effect transistors, as well as one linear controller. It is connected to the unit through a channel adapter. If you believe the reviews of experts, then for contact toggle switches the filters of this series are not suitable. The triggers are set directly to the active type. Their sensitivity is not more than 5 mV. It is also important to note that varistors are used without facing. In this case, analog converters are not suitable for connection.
Features of modifications LC
The LC filter is mounted on contact-only switches. For drive modifications, the elements are not suitable. The controller in this case uses the active type. The conductivity parameter on the contactor corresponds to 12 microns. If you trust the reviews of specialists, then the beam capacitor in the device has good conductivity. The voltage of the filter of this type is 230 V.
The LC filter is not suitable for connection to ventilation systems. The heat loss of this element is quite high. It is also important to note that the model does not cope well with impulse noise. The insulator in this case is only behind the stabilizer. The overload indicator for the filter of the presented series is 30 A. It is forbidden to connect the modification through the varicap. For ventilation systems, the filter is not suitable.
LK device assignment
The presented filter is electric, network can be used for various pumping stations. The presented modification is highly conductive. The model has a channel transistor. The working sensitivity of the element is 4 mV. The device is not suitable for contact toggle switches. The heat loss of the filter of this series is low. The selector is applied operational type.
The comparator of the modification is missing. If you trust the reviews of experts, the capacitor overheats quite quickly. The zener diode in the modification is used open type. To connect the model to the pumping station, a converter with an adapter is required. Pentode used discrete type. Adapters are often used to increase the frequency.