A doubler is a device that is designed to convert ripple voltage. This process occurs in cascades. A standard AC 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 in screens. The main parameters of the 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 operation of the doubler
The principle of operation of the doubler is based on voltage conversion. For this, the device has a whole chain 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 switched on. The specified element is able to work at certain frequencies.
In this case, much depends on the manufacturer of the modification. Some models use a lining that acts as an insulator. DC models pass through a capacitor circuit. The rectification takes place on the module, which is an integral element of the diode. At high output voltages, pulsed noise often occurs. Also, the weaknesses of the voltage gain can be attributed to the disadvantages of doublers. Transformers do not have such problems.
Low ripple models
The low ripple voltage doubler is suitable for controllers and is often installed on comparators. Many models operate at low conductivity. Stabilizers are used with diode-based expanders.
You can make a 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 about 15 V. Moreover, the deviation coefficient can reach 10%.
High ripple devices
A high ripple voltage doubler is used in AC power. Quite often, devices can be found in household appliances. These modifications are distinguished by good conductivity, since they use several pairs of capacitors. Installed models through the thyristor. Many modifications are made with a lining and have good security. The main disadvantage is the high threshold sensitivity. Additionally, you should pay attention to the diodes. On some models, they are used without an expander. A 12-volt DC voltage doubler operates at a frequency of 30 Hz.
Features of low-frequency models
Low frequency doublers are installed on comparators of small power. If we consider a simple voltage doubler, then he uses three capacitors. The diode in this case is mounted on a linear resistor. Conductivity in devices can increase quite a lot. In this case, the frequency is maintained by the stabilizer. Many models have several insulators. In this case, the connection of the doubler can occur through the transceiver. The most common models are considered to be two triodes.
High frequency devices
A 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 in doublers of this type 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 the modifications are not able to work with pulsed interference.
Laser Pumping Devices
The voltage doubler for pumping the laser operates at a high frequency. Modules for devices are used only on a capacitor basis. Many models show good conductivity, but the nominal voltage is not more than 10 V. The devices use different types of diodes.
It is also worth noting that on the market are modifications with open stabilizers. They have no problems with heating, but the models are not able to provide high frequency. Connecting devices through triodes. There are also modifications on transceivers. They have a high pole conduction parameter. However, the disadvantages include the rapid wear of the capacitors caused by heat loss.
Devices for X-ray systems
In X-ray systems, doublers with wire-type capacitors are quite common. They have good conductivity, but there are problems with a reduced frequency. Many modifications are able to work 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, overload in this case is 2 A with a deviation of 10%. Some modifications are distinguished by capacitive capacitors. Such devices are connected only through transceivers.
Models for Highlights
Doublers for backlighting work only at a low frequency, and the nominal voltage, as a rule, is about 10 V. Different types of capacitors can be installed on models. The voltage doubler is calculated based on the value of the output conductivity and resistance.
The overload coefficient is basically 2 A. Filters are installed on insulators and have good protection. Many models use several skins. Stabilizers are not very common. Resistors are used with or without an adapter. Finding modifications for highlighting on the market is quite simple. The phase resistance indicator starts at 30 Ohms.
Display Devices
Display doublers are made with paired capacitors. In this case, filters are installed only open type. Some modifications work at a frequency of 20 Hz. They have low conductivity with high sensitivity. Also on the market are modifications at 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.
Models for lamps
Doublers for lamps are characterized by high sensitivity. Their minimum frequency is 20 Hz. Models are not afraid of overloads; they have a noise filter installed, which greatly helps 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 conductivity is on average 5 microns. The contacts in the devices are made of copper. Connecting doublers as a standard through a transceiver.
Doublers in ion pumps
Linear capacitors doublers are suitable for ion pumps. Many modifications are capable of delivering a frequency of more than 3 Hz. Devices differ in security and have different conductivity. Moreover, their sensitivity, as a rule, is not more than 5 microns. The rated voltage for doublers starts from 10 V. It is also worth noting that for pumps often used modules on feed-through capacitors. They have high sensitivity. At the input, the conductivity is provided at a level of 4 microns. Thyristors are selected with contact adapters. Doublers are connected through a triode. Stabilizers in devices are rarely used.
Models for air ionizers
Models often have channel capacitors with high capacitance. These devices are distinguished by a quick conversion process, and their operating frequency is approximately 33 Hz. Extenders for models are used of the conductor type. They are able to work in an economical mode and consume little electricity.
Stabilizers are always mounted contact type. Some models work from a pulse triode. The reducibility is at least 10 microns. If we consider the doubler of a constant voltage, then it has transition capacitors, which have a low capacitance. The sensitivity indicator in this case starts from 6 mV. These devices are great for comparators.