Connecting LEDs: the scheme. Connecting LEDs to 220V
Today, LEDs are manufactured in various capacities. Power supplies are suitable for them the most diverse. Also note that the model connection depends on the type of device driver (if any). Nowadays, you can find good and bad LED switching schemes. To understand this issue in more detail, it is necessary to look at models of different capacities.
5 V network connection
In a network with a voltage of 5 V, the connection of LEDs (the diagram is shown below) most often occurs in a sequential order. In this case, much depends on the nominal resistance in the network. If this parameter exceeds 10 ohms, it is more expedient to use pulse power supplies.
In this case, with electromagnetic interference in the circuit will allow to handle a pass capacitor. In this case, the connection of LEDs is best done with linear type resistors. In turn, open analogues resistance maximum able to withstand 13 ohms.To increase the conductivity of the LED system modulators are used.
If we consider models with contact drivers, then for them it is necessary to select controllers separately. Most often they are used with a special amplifier. In this case, the threshold voltage will be at the level of 6 V. In order to solve the problem with negative polarity in the network, many experts recommend the use of operational amplifiers.
12 V network connection
The connection of LEDs to 12 volts can be carried out both in series and in parallel order. If we consider the first option, then power supply units it is more expedient to select a pulse type. You should also be aware that you can connect the LEDs to 12 volts without amplifiers. However, if more than three pieces are installed, they should be foreseen. Models with resonant drivers should only be connected to low-impedance amplifiers.
If we consider the parallel connection of LEDs, then in this case it is important for the circuit to choose two open type resistors. In this case, the first one should be installed in front of the amplifier.The current carrying capacity must be not less than 3 A .. The parameter of the threshold voltage in the device should not be allowed below 4 A. As a rule, the negative resistance of this type of models is small. At the same time maintaining linearity is achieved through the use of high-quality drivers.
LEDs in the 220 V network
What features in this case has the connection of LEDs? 220V provides, as a rule, sequential order. Power supplies in this case are mainly used of the reducing type. To prevent the increase in frequency, the connection of the LEDs to the 220V network should be carried out with operational amplifiers.
Also note that their sensitivity depends on the types of filters. In order to minimize magnetic interference, experts advise installing low-impedance filters. In this case, much depends on the LED driver. If we consider the analog type, then for him the controller will need a rotary. To cope with nonlinear distortions in this situation, low-frequency adapters are used. They are installed, as a rule, near amplifiers.
Wiring diagram of devices to the computer
The connection of the LEDs to the computer can be carried out in different ways. As a rule, for this purpose only phase type capacitors are used. In this case, the resistors can be used open, but the threshold voltage they must withstand not less than 5 V. Additionally, you should pay attention to the frequency of the LED.
If we consider the standard model, they are connected to the power supply through amplifiers. In this case, the resistors must be located at the end of the circuit. If we consider high-power LEDs, then they require an integrated amplifier. In this case, drivers are welcome with high coverage. The conductivity of the device depends solely on the power of the power supply. Directly connection of the LED occurs in this case through a surge protector.
Connect to a low-frequency power supply
To the low-frequency power supply unit the connection of the LEDs (the diagram is shown below) can be carried out only in the network with a constant current. In this case, resistors are used open type. In this case, the minimum power of the LED must be 5 V.An amplifier for him can pick up the operating type. If we consider the model with drivers, they are often soldered together with pass capacitors.
In this case, the conductivity parameter is closely related to their capacitance. To enhance the sensitivity of the device, many experts advise the use of broadband converters. In this case, anti-interference adapters are not suitable. However, it makes sense to install different filters. Additionally, it should be noted that the regulators in the chain can be used both of a rotary and a button type.
Connecting LEDs to a high-frequency power supply
To high-frequency power supplies, the connection of the LEDs occurs only through the auxiliary adapter. In this case, the type of driver plays an important role. If we consider single-pole models, they have a high conductivity parameter. In this case, the negative resistance in the circuit should be kept at 10 Ohms. If only one LED is connected, it is not necessary to use an operational type amplifier.
Otherwise, it is better to install it to solve problems with nonlinear distortions.Additionally, it should be noted that electrode drivers for connecting to high-frequency power supplies are not suitable. This is due primarily to the high sensitivity of such devices. In this situation, the LEDs will burn pretty quickly. In this case, power control will not help.
The connection of the LEDs in series is carried out using zener diodes. Find them in the store today is quite simple. They are installed, as a rule, on a special magnetic grid. To fix them on the board, you will have to use a blowtorch. Also note that the power supply must have a powerful amplifier. In this case, the resistors, many experts recommend to install the pectronic type.
The level of nominal resistance, they must withstand at least 4 ohms. In turn, the load parameter is welcomed at 20 A. The problem with magnetic interference can be solved by setting the output filter. To raise the sensitivity of the device, both variable and static capacitors are used.In size, they are quite different. In this regard, on this issue it is necessary to approach each time individually.
Capacitive capacitor circuits
Connecting high-power LEDs with capacitive capacitors, at first glance, is quite simple. However, in this situation, you must first take into account the power resistors. It is also important to remember that the parameters of LED drivers can be quite different. In this connection it is necessary to select capacitors for the device very carefully. First of all, it is directly evaluated by the power supply to which the amplifier is connected. If we consider modifications with a threshold voltage of 20 V, then the capacitive capacitor in this case, you can use one.
Otherwise, they are set to two to solve problems with nonlinear distortion. In turn, the sensitivity of the device can always be adjusted using the controller. Directly drivers are most often used of the pulse type. In turn, the modulators can be installed various. Problems with polarity in this case should not arise.As a result, with a power supply unit of 20 V, the threshold current must be maintained at 3 A. In this case, the frequency may fluctuate depending on the voltage surges in the network.
Using damping capacitors
Connecting LEDs with damping capacitors implies the use of 15 V power supplies. In this case, only open-type resistors are used. As a result, the parameter of negative resistance in the circuit does not exceed 30 Ohms. Also note that only low power LEDs can be used. Directly capacitors are installed near power supplies. In this case, for normal operation of the device, amplifiers are not required.
Due to the high sensitivity of the models, their threshold voltage is at least 15 V. The maximum load depends on the power of the LEDs. Drivers for models, as a rule, select the latitudinal type. Solving the problem with negative polarity in such a situation can be quite simple. Filters for this purpose should be installed behind amplifiers. Also in this case, integral tetrodes will help to cope with the problem.
The use of absorbing filters
Filters of this type are most suitable for LEDs at 20 V. At the same time, they are not capable of operating with pulsed power supplies. Additionally, it should be borne in mind that they do not solve problems with nonlinear distortions. In turn, stabilize the frequency filters are capable of pretty quickly. Due to this, problems with sensitivity in such models are very rare.
LED receivers with wave receivers
LEDs of this type are usually connected directly to the power supply. In this case, amplifiers in the network are not required. However, in this case it is important to remember the type of resistor. If it is used open, filters will have to be installed. Additionally, it should be noted that for a serial connection of LEDs, these receivers are ideal. At the same time parallel connection can provoke nonlinear distortions. The sensitivity of the device will depend on the input voltage parameter.
LEDs with magnetic drivers
LEDs with magnetic drivers are connected, usually in a sequential order. At the first stage it is very important to estimate their power.Additionally, the negative resistance parameter in the circuit should be considered. If we consider low-power models, they are connected to power supplies through an amplifier. Otherwise it is better to use surge protectors.
In this case, absorption modifications can lead to magnetic interference. How to solve problems with increased frequency in this case? Experts recommend using single-channel resistors. In this modulators for the scheme, you can pick up a variety of.