The operation of the transformer is based on the conversion of current from a network with a voltage of 220 V. Devices are divided by the number of phases, as well as the overload indicator. On the market there are modifications of single-phase and two-phase types. The current overload parameter ranges from 3 to 10 A. If necessary, you can make an electronic transformer with your own hands. However, for this, it is first of all important to familiarize yourself with the device of the model.
Model Diagram
The electronic 12V circuit assumes the use of a pass relay. The winding is directly applied with a filter. To increase the clock frequency, there are capacitors in the circuit. They are available in open and closed types. Single-phase modifications use rectifiers. These elements are necessary to increase the conductivity of the current.
On average, the sensitivity of the models is 10 mV. With the help of expanders, problems with congestion in the network are solved. If we consider a two-phase modification, then it uses a thyristor. The specified element is usually installed with resistors. Their capacitance is on average 15 pF. The level of current conduction in this case depends on the load of the relay.
How to do it yourself?
You can easily do it yourself. For this, it is important to use a wired relay. It is advisable to select an expander for it of an impulse type. To increase the sensitivity parameter of the device, capacitors are used. Many experts recommend installing resistors with insulators.
To solve problems with power surges, filters are soldered. If we consider a home-made single-phase model, then it is more expedient to select a modulator for 20 watts. The output impedance in the transformer circuit should be 55 ohms. Output contacts are soldered directly to connect the device.
Capacitor Resistor Devices
The electronic transformer circuit for 12V involves the use of a wired relay. In this case, the resistors are installed behind the lining. As a rule, modulators are used in open type. Also, the electronic transformer circuit for 12V halogen lamps includes rectifiers, which are selected with filters.
Amplifiers are needed to solve switching problems. The output resistance parameter averages 45 ohms. The current conductivity, as a rule, does not exceed 10 microns. If we consider a single-phase modification, then it has a trigger. Some specialists use triggers to increase conductivity. However, in this case, heat losses increase significantly.
Transformers with regulator
The 220-12 V transformer with a regulator is quite simple. The relay in this case is standardly used wired type. The regulator itself is installed with a modulator. To solve problems with reverse polarity, there is a kenotron. It can be used with or without lining.
The trigger in this case is connected through conductors. These elements can only work with impulse expanders. On average, the conductivity parameter for transformers of this type does not exceed 12 microns. It is also important to note that the negative resistance indicator depends on the sensitivity of the modulator. As a rule, it does not exceed 45 ohms.
Using Wired Stabilizers
A 220-12 V transformer with a wired stabilizer is very rare. For normal operation of the device, a high-quality relay is required. The negative resistance index averages 50 ohms. The stabilizer in this case is fixed on the modulator. The specified element is primarily designed to lower the clock frequency.
The heat loss in this transformer is negligible. However, it is important to note that there is a lot of pressure on the trigger. Some experts in this situation recommend the use of capacitive filters. They are sold with or without a guide.
Models with diode bridge
A transformer (12 Volts) of this type is produced on the basis of selective triggers. The threshold resistance indicator for models is on average 35 ohms. To solve problems with lowering the frequency, transceivers are installed. Directly diode bridges are used with different conductivity. If we consider single-phase modifications, then in this case the resistors are selected for two plates. The conductivity index does not exceed 8 microns.
Tetrodes in transformers can significantly increase the sensitivity of the relay. Modifications with amplifiers are very rare. The main problem with transformers of this type is the negative polarity. It occurs due to an increase in the temperature of the relay. To remedy the situation, many experts recommend using triggers with conductors.
Model Taschibra
The electronic transformer circuit for 12V halogen lamps includes a two-plate trigger. The relay of the model is used wired type. Expanders are used to solve problems with reduced frequency. In total, the model has three capacitors. Thus, network congestion problems rarely occur. On average, the output resistance parameter is kept at 50 ohms. According to experts, the output voltage on the transformer should not exceed 30 watts. On average, the sensitivity of the modulator is 5.5 microns. However, in this case, it is important to take into account the workload of the expander.
RET251C device
The specified electronic transformer for lamps is produced with an output adapter. The expander of the model has a dipole type. In total, three capacitors are installed in the device. The resistor is used to solve problems with negative polarity. Capacitors in the model rarely overheat. The modulator is directly connected through a resistor. In total, the model has two thyristors. First of all, they are responsible for the output voltage parameter. Thyristors are also designed to ensure stable operation of the expander.
Transformer GET 03
The transformer (12 Volt) of this series is very popular. In total, the model has two resistors. They are located next to the modulator. If we talk about indicators, it is important to note that the modification frequency is 55 Hz. The device is connected via an output adapter.
The expander is matched with an insulator. Two capacitors are used to solve negative polarity problems. The regulator in the presented modification is missing. The conductivity index of the transformer is 4.5 microns. The output voltage fluctuates around 12 V.
ELTR-70 device
The specified 12V electronic transformer includes two through thyristors. A distinctive feature of the modification is considered to be a high clock frequency. Thus, the current conversion process will be carried out without voltage surges. The expander of the model is used without lining.
There is a trigger to decrease the sensitivity. It is installed as a standard selective type. The negative resistance indicator is 40 ohms. For a single-phase modification, this is considered normal. It is also important to note that devices are connected via an output adapter.
Model ELTR-60
This transformer gives off high voltage stability. The model belongs to single-phase devices. The capacitor is used with high conductivity. Problems with negative polarity are solved by an expander. It is installed behind the modulator. There is no regulator in the presented transformer. In total, the model uses two resistors. Their capacitance is 4.5 pF. If you believe the experts, then overheating of the elements is very rare. The output voltage on the relay is strictly 12 V.
Transformers TRA110
The specified transformers work from the through relay. The expanders of the model are used in different capacities. The average output impedance of a transformer is 40 ohms. The model belongs to two-phase modifications. Its threshold frequency is 55 Hz. In this case, the resistors are dipole type. In total, the model has two capacitors. To stabilize the frequency during operation of the device, a modulator operates. The conductors of the model are soldered with high conductivity.
