A doubler is a device that is designed to convert pulsating voltage. This process takes place in cascades. A standard AC voltage doubler consists of a set of capacitors and a diode.
It is also worth noting that there are low-frequency modifications that are made with stabilizers. Most often they are found on screens. The main parameters of modifications include pole conductivity, threshold voltage and overload. In order to understand the doublers in more detail, it is worth considering the principle of the model.
The principle of the doubler
The principle of operation of the doubler is based on voltage conversion. To do this, the device has a whole circuit of capacitors. They differ in pole conductivity and capacitance. Diodes in this case are mounted on contactors. When voltage is applied to the doubler, the thyristor is activated. The specified element is capable of operating at certain frequencies.
In this case, much depends on the manufacturer of the modification. Some models use a lining that acts as an insulator. Direct current for models passes throughcapacitor circuit. Rectification occurs on the module, which is an integral element of the diode. At a high output voltage, impulse noise often occurs. Also, the disadvantages of doublers include weak voltage amplification. Transformers do not have such problems.
Low ripple models
The low ripple voltage doubler is suitable for controllers and is quite common on comparators. Many models operate at low conductivity. Stabilizers are used with diode based expanders.
You can make a do-it-yourself voltage doubler with two capacitors. Directly the diode is fixed on the transceiver. If we talk about indicators, then the maximum overload for models is approximately 15 V. At the same time, the deviation coefficient can reach 10%.
High Ripple Devices
The high ripple voltage doubler is used in AC mains. Quite often, devices can be found in household appliances. These modifications are distinguished by good conductivity, since they use several pairs of capacitors. Models are installed through a thyristor. Many modifications are made with lining and have good security. The main disadvantage is the high threshold sensitivity. Additionally, it is worth paying attention to the diodes. For some models, they are used without an expander. A 12 volt DC voltage doubler operates at 30 Hz.
Features of low-frequency models
Low-frequency doublers are installed on low power comparators. If we consider a simple voltage doubler, then it uses three capacitors. The diode in this case is installed on a linear resistor. Conductivity in devices can increase quite a lot. In this case, the frequency is maintained due to the stabilizer. Many models have multiple insulators. In this case, the connection of the doubler can occur through the transceiver. The most common are considered to be models for two triodes.
High frequency devices
The high-frequency voltage doubler is assembled on the basis of an adjustable capacitor. The models use two diodes. Their conductivity is approximately 55 microns. It is also worth noting that doublers of this type have a rather high sensitivity. Some modifications are assembled with capacitive stabilizers. Models are well suited for comparators. However, they are not used in lamps. The problem in this case is the overheating of the capacitors. It is also worth noting that modifications are not able to work with impulse noise.
Laser Pumping Devices
The voltage doubler for pumping the laser operates at high frequency. Modules for devices are used only on a capacitor basis. Many models show good conductivity, but at the same time the nominal voltage is no more than 10 V. Different types of diodes are used in the devices.
It is also worth noting that the marketmodifications with open stabilizers are presented. They have no problems with heating, but the models are not able to provide high frequencies. Devices are connected via triodes. There are also modifications on transceivers. They have a high pole conductivity parameter. However, the disadvantages include rapid wear of capacitors caused by heat loss.
Devices for X-ray systems
Doublers with wire-type capacitors are quite common in x-ray systems. They have good conductivity, but there are problems with low frequency. Many modifications are capable of operating at high voltage. It is also worth noting that devices of this type are often used in lamps. Many models are equipped with several pole diodes. They have good sensitivity, the overload in this case is 2 A with a deviation of 10%. Some modifications are distinguished by capacitive capacitors. Connection of such devices is carried out only through transceivers.
Models for highlights
Doublers for backlights work only at low frequency, and the rated voltage, as a rule, is about 10 V. Different types of capacitors can be installed on models. The calculation of the voltage doubler is based on the value of the output conductivity and resistance.
The overload factor is generally 2 A. The filters are installed on insulators and have good protection. Many models use multiple covers. Stabilizers are not very common. Resistorsused with or without an adapter. Finding modifications for backlighting on the market is quite simple. Their phase resistance index starts from 30 ohms.
Display Devices
Doublers for displays are made with paired condensers. In this case, filters are installed only of an open type. Some modifications operate at a frequency of 20 Hz. They have low conductivity with high sensitivity. Also on the market are modifications to 30 Hz. They use linear capacitors, and the diode is mounted on the plates. Stabilizers are often used with an adjustable expander. Many doublers are not suitable for comparators. At the input, the conductivity barely exceeds 5 microns.
Lamp Models
Doublers for lamps are characterized by high sensitivity. Their minimum frequency is 20 Hz. The models are not afraid of overload, they have an anti-interference filter installed, which helps a lot with increased voltage. Many modifications are made with several capacitors, in which the capacitance is not more than 50 pF. It is also worth noting that models with several diodes are produced. If we consider a conventional DC voltage doubler, then the input conductance is on average 5 microns. The contacts in the devices are made of copper. The connection of doublers is standardly carried out through the transceiver.
Doublers in ion pumps
For ion pumps suitable doublers on linearcapacitors. Many modifications are capable of delivering a frequency of more than 3 Hz. Devices differ in security and have different conductivity. At the same time, their sensitivity, as a rule, is no more than 5 microns. The rated voltage for doublers starts at 10 V. It is also worth noting that modules on feed-through capacitors are often used for pumps. They have high sensitivity. At the input, conductivity is provided at a level of 4 microns. Thyristors are selected with contact adapters. Doublers are connected through a triode. Stabilizers are rarely used in devices.
Models for air ionizers
Models often have channel capacitors with a high capacitance. These devices are distinguished by a fast conversion process, and their operating frequency is approximately 33 Hz. Expanders for models are used conductor type. They are able to work in economical mode and consume little electricity.
Stabilizers are always installed contact type. Some models work from a pulsed triode. The reducibility is at least 10 microns. If we consider a DC voltage doubler, then it has transition capacitors that have a low capacitance. The sensitivity indicator in this case starts from 6 mV. These devices are great for comparators.
