Modern incubators are made with high-quality temperature controllers. Some of them have microcontrollers. For a conventional incubator, a thermostat can be made independently. However, in this case, much depends on the type of model. To understand this in more detail, you should consider specific configurations.
Do-it-yourself model for the Kwochka MI-30 incubator
The temperature regulator circuit for the Kvochka incubator includes field effect transistors, as well as a rectifier. The controller in this case is provided with a dinistor. Directly capacitors are used open type. In order to independently assemble the modification, a conventional insulator will be required. The microcircuit in the specified incubator uses the PP20 series.
Model layout for the Cinderella incubator
The temperature controller circuit for the Cinderella incubator consists of a rotary controller. The rectifier is used with two contacts. To assemble the modification yourself, one dinistor is used. The overload indicator of this thermostat fluctuates around 2 A. The input voltage of the circuit is not more than 12 V. The resistors in the system are used both field and tuning type. In this case, transceivers are not required for assembly.
Device for incubator "Mother hen"
The temperature regulator circuit for the Nasedka incubator includes a modular rectifier. Transceivers are field type. In total, three capacitors are used in the circuit . Their input capacitance is 12 pF. The sensitivity of the system itself fluctuates around 3 microns. The expander for the thermostat is installed semiconductor type. The stabilizer is not used for the model. The output voltage of the device is 10 V.
Device for K157UD2
The temperature regulator circuit for the incubator on K157UD2 consists of a modular rectifier. The controller in this case is used with a dipole resistor. A total of five capacitors are provided in the circuit. Their capacity is not more than 3.5 pF. The expander in the model is used without a stabilizer. An amplifier is installed at the output. In total, the model uses two diodes. The chip is provided for the PP20 series. The dinistor in this case is absent.
Microcontroller devices
The temperature controller circuit for the incubator on the microcontroller includes a modular rectifier. In order to independently assemble the modification, a rotary regulator is required. The extender is most often used as a switched type. Transceivers are used both unipolar and bipolar type.
If there is no modulator, a kenotron is used. The sensitivity parameter maximum must reach 5 microns. The system output voltage must not exceed 12 V.
Modifications with pulse triodes
This type of temperature controller circuit for an incubator, created by oneself, includes a capacitor modulator. Microchips are most often used multi-channel type. For the purpose of self-assembly of a modification, a single-pole transceiver is used. In total, two dinistors will be needed in the work. A powerful transistor is installed at the output of the circuit. Directly pulsed triodes are used with a stabilizer. On average, the sensitivity of the thermostat should not exceed 6 microns. The output voltage indicator is 10 V. In order to protect the device from failures, fuses of various kinds are used.
Using operational triodes
Operational triodes in devices are installed quite rarely. The incubator circuit includes tuning resistors. Many models use trimmer transistors. Triodes are installed directly behind the rectifiers. In order to independently assemble the model, you can not do without a high-quality modulator.
In this case, three field-type transistors are required. Their capacity should not exceed 2.2 pF. Directly transceiver is installed behind the regulator. The stabilizer is used only linear type. It is installed on the chip. The output voltage of devices of this type is about 12 V. In turn, the sensitivity of thermostats is not more than 6 microns.
Single channel transistors for temperature controllers
With single-channel transistors, the temperature regulator circuit for the incubator (it is not difficult to make a device with it yourself) consists of a modular rectifier, as well as a microcircuit. Regulators for these models are taken with two resistors. The expander is more often used trimmer type. For the purpose of self-assembly of the modification, only semiconductor thyristors are used. Total isolators for the circuit will require two. Capacitors can be used capacitive type. As a rule, the overload indicator is at the level of 4.3 A. In this case, the output voltage reaches a maximum of 13 V.
Dual Channel Transistor Circuit
This do-it-yourself temperature controller circuit for an incubator involves the use of semiconductor resistors. Direct rectifiers are standardly used with a modulator. There are three capacitors in the circuit.
The stabilizer is used with high throughput. The dinistor for the temperature controller is suitable only for the analog type. An expander in the circuit is installed behind the modulator. The regulator itself is provided with a rotary type. Diodes in this case are installed behind the rectifier.
Low Capacitor Device
The scheme of the thermostat of this type involves the use of a modular rectifier. The capacitor itself is used with a capacitance of not more than 2.3 pF. Resistors for the model are selected tuning type. In total, the device has three expanders. Safe operation of the device is ensured by insulators.
The dinistors in the circuit are of the analog type. In total, one stabilizer is required for the model. There are no transceivers in this case. The output voltage of the thermostat is at around 10 V. The sensitivity of the modulator is not more than 6 microns. The device overload indicator is at 3.3 A.
Selective Capacitors
Selective condenser thermostats are common. The standard circuit of the device consists of a modular rectifier and two diodes. An extender is used to transmit the signal to the chip. In total, two resistors are provided in the circuit.
Only one transceiver is used. The sensitivity indicator in this case is at the level of 4 microns. The regulator is used as a standard rotary type. It is also important to note that there are modifications with microcontrollers. The input voltage of the devices does not exceed 13 V. On average, the overload parameter is 3.6 A.
Resonant Capacitor Circuit
With resonant capacitors, the temperature controller circuit for the do-it-yourself incubator includes a code expander. The sensitivity index of the system is not more than 5 microns. The rectifier for models is only suitable for modular type. As a rule, resistors are used by tuning amplifiers. The transceiver is in the circuit behind the regulator.
To increase the level of throughput, dinistors are used. In some cases, thermostats are made with kenotrons. Most often they are used of the frequency type. If we talk about the parameters, the capacitance of the capacitors does not exceed 5.2 pF. In this case, the voltage is at 13 V. On average, the overload parameter is 3 A.