Many home appliances have the ability totune. This process is carried out with the help of a special regulator. Today, a triac subtype has been allocated to a separate category, but many people know little about this element. In fact, the feature of this part is a two-way action. Perhaps this is due to the anode, as well as the cathode. As a result of their movement in the device, the current direction changes.
Some believe that triacs may wellbe replaced by contactors, relays and starters. However, this opinion is erroneous. First of all, the durability of these regulators should be noted. In terms of switching frequency, they are practically unlimited and this is good news. Wear parts at the same time is minimal. Additionally, it should be noted the complete absence of sparking in devices of this type. At times of zero mains current, regulators are capable of switching. Due to this interference in the circuit is significantly reduced.
The circuit of the power regulator on the triac includesyourself a single chip, as well as a set of thyristors. They can be located in the circuit after the condenser or immediately at the board. Variable resistor, as a rule, the device has one. He is in the regulator is responsible for interference. Voltage resistor is able to withstand the most diverse. In this case, much depends on the liberty of the device. The resistor, which is located behind the capacitor, must withstand the limiting resistance at 3 Ohms. In turn, the output element is set slightly weaker. Also the power regulator circuit on the triac includes a fuse.
This triac differs in that it is capablework with switched alternating current. In this case, the voltage in the system is maintained up to 5 A. The power regulator on the triac "KU208g", as a rule, is compact and can be used in various equipment. As an example, you can bring a soldering iron.
Power controller soldering iron on the triac inchip does not need. There are two transistors in the standard circuit. They are installed in some cases of bipolar type. The first one should be located directly near the power supply. At this time, the second bipolar transistor is located behind the triac.
A distinctive feature of such regulatorsIt is considered to be the presence of weak-stabilitrons. Most often, these items on the market can be found with the marking "KD2". This suggests that the Zener diode can withstand a voltage of 2 V. In turn, the alternating current in the system can be a maximum of 5 A. A capacitor in the circuit is always installed only one. Solder it in some cases immediately after the bipolar transistor.
This element in the device is responsible forcurrent conversion. Resistors power controller on the triac has a different type. Analog elements on the input impedance withstand a maximum of 2 ohms. In turn, the zener diodes are set to variable-type resistors with increased frequency. They can work in both directions.
The power regulator on the simistor vacuum cleaner consistsfrom a set of diodes, as well as resistors with a single capacitor. For good conductivity, the triac is in some cases supplied with a finned heat sink. This additionally helps in stabilizing the voltage. Capacitors in the system cope with pulses. Transistors mainly use silicon.
They can only pass through themselvesD.C. The output impedance in the system must not exceed 4 ohms. Otherwise, a high voltage is applied to the triac. Much in this situation also depends on the current transfer ratio. It is affected by the collector with the emitter installed.
Микросхемы в таких регуляторах применяются low frequency. This is necessary for a quick conversion process. Zener diodes are used quite rarely. The phase change in the system occurs due to the switching of the capacitor to the upper position. To stabilize the voltage, the phase power regulator on the triac has two thyristors, and they work in pairs in a circuit. Due to the high frequency at the cathode, the diodes are soldered very rarely.
Simple noiseless power controller onThe triac is usually used on devices with voltages above 200 V. In this case, dual-channel chips are used. A diode system is installed near the capacitors. Variable transistors in the circuit are not used. The maximum resistance of a capacitor is required to withstand up to 3 ohms. Directly control the power of the device by using the receiver.
Impulse Fill Levelthis is changing. Capacitors in the system pass only direct current through themselves. The frequency of the clock transistor depends on the division ratio of the counter. Microcontrollers in the system are used to suppress interference. The frequency of the pulses at the input depends solely on the limit register.
A simple power control on the simistor "TS80"able to boast good heat conductivity. The conversion process itself is carried out in a transformer. The limiting frequency depends only on the voltage in the network. In general, regulators with triacs of this type are characterized by increased reliability, and they are capable of working for a long time. However, they also have disadvantages.
First of all it should be noted a small level.stabilization. This is due to the large load that is on the thyristor. In order to cope with current stability, special filters are used in some cases. However, it does not help with household equipment. Thus, it is best to use regulators of this type on receivers and other low-frequency devices.
Simulator power control "TC 125"Used for powerful power supplies. Resistance it is able to withstand a maximum of 4 ohms. In this case, the heat conductivity is at a high level. Additionally, it should be noted that triacs of this type are equipped with indicators. These devices are designed to combat electromagnetic interference.
In some cases, the display systemset to active. This involves the use of a low frequency controller. This element in the system works on a pair of limiters. Pass it through itself only alternating current. In case of negative polarity, capacitors are included. To go to the mains voltage there are a number of transistors.
Дистанционный регулятор мощности на симисторе в necessarily equipped with a controller. Diodes in the system are installed only analog type. The chip for the normal operation of capacitors requires a three-channel. Resistors, as a rule, need only three. One of them is needed to transmit and stabilize the signal from the transformer. The remaining two resistors are installed opposite the capacitors. In this case, the amplitude of interference is significantly reduced and this should be taken into account.
Дополнительно в регуляторах имеются converters. The nominal load of these elements is kept at 5 A. Variable resistors in the circuit are used quite rarely. This is due to the fact that high voltage power sources are available. Filtration systems are installed exclusively in front of the transformer. In this case, the accuracy factor will be maximum.
Для плавного пуска в регулятор мощности на simistor insert a special block. Its main task is dual integration. This happens by definition of the limit value of polarity. The display system in the regulators is quite rare. Such devices can be used at temperatures from -20 to +30 degrees. The power source of the system can be a unit with power up to 10 V. The sensitivity of the device depends solely on the types of resistors. If analog elements are used in the system, current conversion is much faster.
Синфазное напряжение регулятором способно maintained at 5 V. The capacitors in the device are installed with a limiting resistance of 6 ohms. In this case, their minimum capacity should be 2 pF. All this will significantly stabilize the output voltage. The diodes in the regulator are soldered to low power. They must be able to withstand the maximum load at 5 A.
For devices such as electric hob, resistorscurrent limiting required. The Zener diode in the system uses only one. Transistors in the device can be up to three units. In this case, much depends on the type of power supply. If the voltage limit is less than 30 V, then only one transistor is required at the beginning of the circuit. Resistance it must be able to withstand 5 ohms. A triac in the system is installed between two capacitors. Current is supplied to the primary winding only after it has passed through the transformer.
