The transformer will work on the conversion of current from a network with a voltage of 220 V. The devices are divided by the number of phases, as well as the overload indicator. On the market 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 model device.
Model outline
The electronic transformer circuit for 12V halogen lamps involves the use of a pass-through relay. Directly winding is applied with a filter. There are capacitors in the circuit to increase the clock frequency. They are available in open and closed type. For single-phase modifications, rectifiers are used. These elements are necessary to increase current conductivity.
The average sensitivity for models is 10 mV. With the help of extenders, problems with network congestion are solved. If we consider a two-phase modification, then it uses a thyristor. The specified element is usually installed with resistors. Their average capacitance is 15 pF. The level of current conductivity in this case depends on the load of the relay.
How to do it yourself?
Making an electronic transformer with your own hands is easy. For this, it is important to use a wired relay. It is advisable to select an expander for it of a pulse type. Capacitors are used to increase the sensitivity parameter of the device. Many experts recommend installing resistors with insulators.
Filters are soldered to solve problems with power surges. If we consider a home-made single-phase model, then the modulator is more appropriate to select at 20 watts. The output impedance in the transformer circuit must be 55 ohms. The output contacts are soldered directly to connect the device.
Capacitor Resistor Devices
The electronic transformer circuit for 12V halogen lamps involves the use of a wired relay. In this case, the resistors are installed behind the lining. As a rule, modulators are used open type. Also, the electronic transformer circuit for 12V halogen lamps includes rectifiers that are selected with filters.
Amplifiers are needed to solve switching problems. The output impedance parameter averages 45 ohms. Current conductivity, as a rule, does not exceed 10 microns. If we consider a single-phase modification, then it has a trigger. Some experts use triggers to increase conductivity. However, in this case, heat losses are significantly increased.
Transformers with regulator
A 220-12 V transformer with a regulator is arranged quite simply. The relay in this case is standardly used wired type. Directly, the controller 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 via conductors. The indicated elements are capable of working only with pulse 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 index 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. Negative resistance is an average of 50 ohms. The stabilizer in this case is fixed on the modulator. The specified element is primarily intended to lower the clock frequency.
In this case, the heat loss of the 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 and without a conductor.
Models with a diode bridge
A transformer (12 Volts) of this type is made on the basis of selective triggers. The threshold resistance for models is on average 35 ohms. To solve problems with lower frequencies, 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 on two plates. The conductivity does not exceed 8 microns.
Transformer tetrodes can significantly increase the sensitivity of the relay. Modifications with amplifiers are very rare. The main problem with transformers of this type is negative polarity. It occurs due to an increase in the temperature of the relay. To correct 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 model relays use a wired type. To solve problems with reduced frequency, expanders are used. In total, the model has three capacitors. Thus, network congestion problems are rare. On average, the output impedance parameter is kept at 50 ohms. According to experts, the output voltage on the transformer should not exceed 30 watts. The average sensitivity of the modulator is 5.5 microns. However, in this case, it is important to consider the workload of the expander.
RET251C device
The indicated electronic transformer for lamps is made with an output adapter. The expander in the model has a dipole type. In total, the device has three capacitors. The resistor is used to solve problems with negative polarity. Capacitors in the model rarely overheat. The modulator is connected directly 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 provide stable operation of the expander.
Transformer GET 03
The transformer (12 Volts) 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. In order to solve problems with negative polarity, two capacitors are used. The controller in the presented modification is absent. The transformer conductivity is 4.5 microns. The output voltage fluctuates around 12 V.
ELTR-70 device
The specified electronic transformer 12V includes two loop-through thyristors. A distinctive feature of the modification is the high clock frequency. Thus, the current conversion process is carried out without voltage surges. The expander in the model is used without cover.
To lower the sensitivity there is a trigger. It is installed as a standard selective type. The negative resistance is 40 ohms. For a single-phase modification, this is considered normal. It is also important to note that devices are connected through an output adapter.
Model ELTR-60
This transformer emits high voltage stability. The model relates to single-phase devices. The capacitor is used with high conductivity. Problems with negative polarity are solved by the expander. It is installed behind the modulator. The regulator in the presented transformer is missing. In total, the model uses two resistors. Their capacitance is 4.5 pF. According to experts, overheating of elements is observed very rarely. The output voltage of the relay is strictly 12 V.
Transformers TRA110
These transformers operate from a feed-through relay. The expanders for the model are used in different capacities. The average output impedance of a transformer is 40 ohms. The model belongs to two-phase modifications. The threshold frequency indicator for her is 55 Hz. In this case, the resistors are of the dipole type. In total, the model has two capacitors. To stabilize the frequency during operation of the device operates a modulator. The conductors of the model are soldered with high conductivity.