Voltage Doubler: Features and Principle of Operation

A doubler is a device that is designed to convert a pulsating voltage. This process takes place on cascades. The standard doubler of alternating voltage 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 modifications include pole conductivity, threshold voltage and overload. In order to better understand the doublers, it is worthwhile to consider the principle of the model.

Principle of operation of the doubler

The principle of the doubler's operation is based on the transformation of voltage. To do this, the device has a whole chain of capacitors. They differ in polar conductivity and capacitance. Diodes in this case are attached to contactors. When the voltage is applied to the doubler, a thyristor is activated. This 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. The direct current of the models passes through a chain of capacitors. Straightening occurs on the module, which is an integral part of the diode. When the output voltage is high, impulse noise often occurs. Also to the disadvantages of doublers can be attributed a weak increase in voltage. Transformers have no such problems.

Models of low pulsation

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 expanders on a diode basis.

It is possible to make a voltage doubler with two condensers. Directly the diode is fixed on the transceiver. If to speak about indicators, the maximum overload makes at models approximately 15 In. Thus the factor of a deviation can reach 10%.

Devices of high pulsation

A high voltage ripple doubler is used in an alternating current network. 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 a thyristor. Many modifications are made with an overlay and have good protection. The main disadvantage is the high threshold sensitivity. In addition, pay attention to the diodes. In some models they are used without an expander. A dc voltage doubler of 12 volts operates at a frequency of 30 Hz.

Features of low-frequency models

Low-frequency doublers are installed on comparators of low power. 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 by the stabilizer. Many models have several isolators. In this case, the doubler connection can occur via a transceiver. The most common are the two triode models.

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 about 55 microns. It is also worth noting that in doublers of this type a fairly high sensitivity. Some modifications are collected 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 capable of working with impulse noise.

Laser pumping devices

The voltage doubler for laser pumping works 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. In the devices used diodes of different types.

Also worth noting that the market is represented by modifications with open stabilizers. They have no problems with heating, but models are not capable of providing high frequency. The devices are connected via triodes. Also there are modifications on transceivers. They have a high pole conductivity parameter. However, shortcomings include the rapid wear of capacitors caused by thermal losses.

Devices for X-ray systems

In X-ray systems, doublers with capacitors of a wired type are quite common. They have good conductivity, but there are problems with 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 a good sensitivity, the overload in this case is 2 A with a deviation of 10%. Some modifications are distinguished by capacitive capacitors. Connect these devices only through transceivers.

Models for highlights

Doubles for highlights work only at low frequency, and the nominal voltage, as a rule, is about 10 V. The models can be equipped with capacitors of different types. The voltage doubler is calculated based on the value of the output conductivity and resistance.

The overload factor is basically 2 A. Filters are installed on insulators and have good protection. Many models use several plates. Stabilizers are not found very often. Resistors are used with or without an adapter. Find modifications for lighting in the market is quite simple. The phase resistance index starts at 30 ohms.

Display Devices

Doubles for displays are produced with paired condensers. In this case, the filters are installed only in an open type. Some modifications work at a frequency of 20 Hz. They have low conductivity at 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

Doubles for lamps are characterized by high sensitivity. The minimum frequency is 20 Hz. Models are not afraid of overload, they have a filter against interference, 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 an ordinary dc voltage doubler, then the input conductivity averages 5 microns. Contacts in devices are made of copper. The doubler connection is standard via the transceiver.

Doubles in ion pumps

For ion pumps, doublers on linear capacitors are suitable. Many modifications can produce a frequency of more than 3 Hz. The devices differ in security and have different conductivities. At the same time, their sensitivity, as a rule, is no more than 5 microns. The nominal voltage of the doublers starts from 10 V. It is also worth noting that modules for loop 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. The doublers are connected via a triode. Stabilizers in devices are rarely used.

Models for air ionizers

Models often have channel capacitors, which have high capacitance. These devices are distinguished by a fast conversion process, and their operating frequency is approximately 33 Hz. Expanders for models are of the conductor type. They are able to work in an economical mode and consume little power.

Stabilizers are always installed contact type. Some models operate from an impulse triode. Reduction is not less than 10 microns. If we consider a doubler of constant voltage, then it has transient capacitors, which have a low capacitance. The sensitivity index in this case starts from 6 mV. These devices are great for comparators.