Many people like to experiment by preparing different dishes at home. But at the same time...
Nowadays, we increasingly use devices powered by various batteries. Sealed gel batteries (6 and 12V) are also often used, in sources uninterruptible power supply, portable portable receivers with fluorescent light bulbs. When such batteries are used separately in other devices, there is a need to charge them.
Faced with the problem of charging such elements, I searched the Internet and found a simple circuit, with a slight adjustment of which an adjustable power supply was also introduced.
The scheme has been duplicated on many sites, the original source probably can’t be found, but it can’t be found on any site printed circuit board. After spending a little time, I drew a printed circuit board in the form of a modular block in the Sprint-Layout 5.0 (6.0) program.
Proposed combined charger has the following characteristics:
– charging batteries with a voltage of 6V;
– charging batteries with a voltage of 12V;
– setting the charging current, five fixed values: 0.15; 0.35; 0.45; 0.75; 1.5A;
– adjustable power supply, voltage from 1.2 to 28V, with a maximum load current of 1.5A.
The circuit is simple, but during installation it is easy to get confused in the wiring of variable resistors and toggle switches. Taking this point into account, an installation diagram was also drawn.
In the wiring diagram, the variable resistors and toggle switches are located facing you.
As a case, we used a case from a computer power supply of the AT form factor (stripped down), with a slight alteration, namely cutting out part of the case and installing a fiberglass insert instead.
The socket is equipped with: variable resistors R7 - R9, toggle switches SA2, SA4, five-position current mode switch, output connectors.
Additionally, the circuit includes a cooling cooler with a diode bridge connected to one of the transformer arms.
Unfortunately, there is no photo of the assembled module, because it is already mounted inside the case. Here is a screenshot of the printed circuit board design:
Details.
The TP-160-2 power transformer used in my version can be replaced with any one with similar parameters, two 12V secondary windings and a load capacity of at least 1.5A.
The printed circuit board is made of 1.5mm thick foil fiberglass. Variable linear characteristic resistors. An analogue of the kr142en22 microcircuit is LT1083. The remaining elements and their characteristics are shown in the diagram.
Photo of the finished device.
A little about operation.
As a result of the first launch, expectations were met and everything worked. When using a 6V battery in charging mode, you need to set the charge voltage to 7.34V (adjustment from 1.2 to about 8V), for a 12V battery, set the charge voltage to 14.7V (adjustment from 1.2V to about 18V). The charging current is set depending on the battery capacity, normally no more than 10% of it.
The circuit diagram and wiring diagram attached to the article were made in the SPlan 7.0 program, the file has two tabs.
Files:
Equipment of serial BKTP
High voltage switchgear (RU-VN).
Small switchgear switchgear type R.M. -6 with gas insulation (produced by EZOIS under license Schneider Electric).
At the customer's request, SF6 monoblocks of other types (manufactured by ABB, Siemens ). It is also possible to perform RU-VN on the basis of KSO cells from Russian manufacturers. The possibility of using cells of the proposed type must be agreed with EZOIS. We have our own production of 6-10 kVA equipment.
Power transformer.
BKTP standard designs are equipped with power transformers (25; 40; 63; 100; 160; 250; 400; 630; 1000; 1250; 1600) with oil-cooled sealed type (TMG) from various manufacturers. At the customer's request, cast resin transformers can also be used various types and manufacturers.
Low voltage switchgear (RU-LV).
BCTS are made using 0.4 kV switchgear of various designs (racks, panels, cabinets) with switching and protective devices of various types (load switches, fuses, circuit breakers) and from different manufacturers.We have our own production of 0.4 kVA equipment.
Automatic transfer system (ATS).
To ensure the required degree of reliability of power supply to consumers, package transformer substations produced by the plant can be equipped with devices for automatically switching on backup power.
ATS in standard package transformer substations can be carried out on the HV side (AVR-VN) or on the LV side (AVR-LV). In both options, the ATS circuit operates in the following emergency situations:
· violation of the phase sequence;
· loss of voltage on one, two or three phases (decrease below permissible level(0.7*Unom) on any of the phases or on all three).
Scheme with AVR-VNis implemented by equipping the drives of the RU-VN switching devices with gear motors and contacts for signaling the position of the devices. The switching control is carried out by an automation cabinet, which monitors the presence of voltage on the LV side.
Scheme with AVR-NNimplemented either on contactors or on motor-driven circuit breakers. The AVR-NN device is a set of two identical panels (cabinets), each of which is installed in the room of the corresponding section (circuit beam) of the package substation. AVR-NN can be built into RU-NN when automatic switches are used as input and sectional devices.
Reactive power compensation devices (RPC).
Depending on the design parameters of the operating mode of the low voltage distribution network, transformer substations can be equipped with reactive power compensation devices.
UKRM can be either of the type specified by the project or selected according to design parameters (power, number of control stages). Structurally, the UKRM can be made as a separate device or be built into the RU-NN.
If the substation contains UKRM, the layout of the package transformer substation may differ from the standard one and is developed individually.
System of own needs (lighting, heating, heating of equipment).
The auxiliary system (SN) provides power for lighting and space heating, ventilation systems, forced heat removal (if available), and equipment heating. The auxiliary circuit provides manual or automatic power backup in the presence of two sources (in two-transformer transformer substations). If the balance of the premises is different (of the power supply company and the subscriber), the circuit allows for independent switching on of power to its parts.
Lighting system substations includes equipment for working and emergency lighting (lamps, batteries, automation devices) of the unit, as well as equipment for pit lighting (typically sockets for connecting a portable lamp).
Heating of KTP blocks is carried out due to the heat generated by the power transformer. For the northern version (or at the customer’s request), electric heaters with a control device (regulator with air temperature sensor) are installed in the RU-NN and RU-VN rooms. Anti-condensation heating of equipment (compartments of relay protection and automation equipment RU-VN, gear motors of drives of switching devices) is provided regardless of the regional design of the package transformer substation.
Electricity measurements and metering.
Measurementelectrical quantities (current and voltage) in serial PTS are carried out on the low voltage side, at the input to the RU-NN. Measuring instruments are located in the auxiliary power supply cabinet (YASN or ShPSN). It is also possible to place measuring instruments in RU-NN. At the customer's request, various types of measuring instruments can be used.
Electricity metering also carried out on the low voltage side. If necessary, electricity metering can be performed both at the input and output lines of the RU-NN. In addition, RU-NN can be manufactured with preparation for electricity metering on outgoing lines (with wiring for metering circuits, but without installing current transformers).
Alarm systems.
At the customer's request, the KTP can be equipped with security and fire alarm systems. They are carried out according to standard projects and include a full set of equipment (sensors, control equipment and warning equipment).
Telemechanics system.
The equipment of the transformer substation can be prepared in preparation for equipping it with a telemechanics system. To carry out telemetering, telesignaling and telecontrol in this case, standard package transformer equipment is equipped with additional options:
· contacts for signaling the position of switching devices RU-VN and RU-NN;
· contacts for signaling the position of switching devices of the MV system;
· gearmotors and releases for remote control of devices;
· sensors of electrical quantities (current and voltage transformers).
In addition, fire and burglar alarm are made with the ability to transmit signals to the telemechanics system.
At the customer's request, the list of signals transmitted to the telemechanics system and functions for remote control of equipment can be expanded in accordance with the provided project.
The telemechanics system can be supplied as a complete set with the package transformer substation, or purchased separately and installed by the customer independently at the site.
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Manufacturer TM "Infrakar" is a manufacturer of multifunctional devices such as a gas analyzer and a smoke meter.
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The META plant is a manufacturer of the most reliable instruments for technical inspection. The STM brake tester is produced at this plant.
If you can repair the device yourself, then our engineers can provide you with a complete set of necessary technical documentation: electrical diagram, TO, RE, FO, PS. We also have an extensive database of technical and metrological documents: technical specifications (TU), terms of reference(TK), GOST, industry standard (OST), verification methodology, certification methodology, verification scheme for more than 3500 types of measuring equipment from the manufacturer of this equipment. From the site you can download all the necessary software (program, driver) required for the operation of the purchased device.
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At the customer's request, verification or metrological certification is provided for each measuring device. Our employees can represent your interests in such metrological organizations as Rostest (Rosstandart), Gosstandart, Gospotrebstandart, CLIT, OGMetr.
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LLC "Zapadpribor" is a supplier of ammeters, voltmeters, wattmeters, frequency meters, phase meters, shunts and other instruments from such measuring equipment manufacturers as: PA "Electrotochpribor" (M2044, M2051), Omsk; OJSC Instrument-Making Plant Vibrator (M1611, Ts1611), St. Petersburg; OJSC Krasnodar ZIP (E365, E377, E378), LLC ZIP-Partner (Ts301, Ts302, Ts300) and LLC ZIP Yurimov (M381, Ts33), Krasnodar; JSC “VZEP” (“Vitebsk Plant of Electrical Measuring Instruments”) (E8030, E8021), Vitebsk; JSC "Electropribor" (M42300, M42301, M42303, M42304, M42305, M42306), Cheboksary; JSC "Electroizmeritel" (Ts4342, Ts4352, Ts4353) Zhitomir; PJSC "Uman plant "Megommeter" (F4102, F4103, F4104, M4100), Uman.
Reference data for transformers of the TS-160 series - TS-160, TSSh-160, TSSh-170, TSSh-170-3. Photos, winding connection diagram. Voltages and currents of input-output windings, number of turns and wire diameter.
Transformer TSSh-160 is similar to transformers TSSh-170, TSSh-170-3. Made on an armored core Ш30х60. All transformers are interchangeable. The difference between TSSh-170 and TSSh-170-3, in the latter the network winding is made only at 220 volts (diagram 2 in Figure 1), the primary winding terminals are 1 - 2 and further numbering of the windings continues from number 3 (in TSSh-160, TSSh -170 from number 7), that is, if instead of TSSh-170 you install TSSh-170-3, then wires suitable for petals 7-8 of TSSh-170, etc. are soldered to petals 3-4 of TSSh-170-3. The network voltage is 220 volts for TSSh-160 and TSSh-170, connected to terminals 1 and 6, with a jumper installed between terminals 2 and 5. For the transformer TSSh-170-3 (diagram 2 in Figure 1), a voltage of 220 volts is connected to the terminals 1 and 2.
Diagram and winding data of transformer TS 160-4
The mains voltage of 220 volts is connected to terminals 1 and 1".
Diagram and winding data of the transformer TSSh-160
