Power supply box with automatic cooling, EMI filter, series lamp & isolation socket.

Abstract

Power supply box with automatic cooling, EMI filter, series lamp & isolation socket. The invention relates to an insulated power supply box designed to ensure the safe power supply of electronic devices. This box includes at least two filter circuits to reduce electromagnetic interference (EMI) and mains noise, a dry-type isolation transformer ensuring safe operation of the device, and an automatic cooling system with a fan for temperature control. It also provides output distribution via multiple group sockets, at least one of which is designed to operate in series with a lamp. The box is integrated with a 4 mm jack socket for electrostatic discharge (ESD) wristband connection, and the interior is lined with fire-resistant aluminum, the exterior with fiberglass knitted fabric, and glass fuses are installed at all outputs, thus enhancing user safety. Due to its compact design, the invention is portable and applicable for the safe power supply of measuring instruments in laboratory and industrial environments.

Description

1 TARIFF Automatic Cooling, EMI Filter, Serrated Lamp & Insulation Socket Power Supply Box Technical Field The invention relates to electricity and electronics. 5 State of the Technology An isolation transformer converts electricity from the grid into electricity that the end user will use. It is a type of transformer that provides electrical insulation. It consists of 10 electrodes on an iron core. It consists of two windings. The first winding connects to the power supply, and the second winding connects to the device that needs electricity. connects. The magnetic field created by alternating current electric current in the nbr nc winding is direct br Without a connection, a complete circuit is formed by the current induced in the second coil via the iron core. It provides electrical energy with insulation. Since the second winding is not connected to grounding The risk of electric shock is eliminated. 15 Isolation transformers are used in power supplies to prevent the risk of electric shock. What kind of machines are involved in maintenance and repairs; those that perform precise measurements, and those exposed to short circuits? The electrons that should not remain are used in the power supplies of the KC devices. A series-connected lamp circuit consists of lamps connected in series along the line where the phase electricity passes, and 20 The device being worked on is connected to an incandescent filament 220VAC bulb / bulbs. In the event of a short circuit, the circuit is completed and the light bulbs light up. It is a device designed to protect the equipment being studied. Electricity is transmitted over the line that offers less resistance, based on its basic principle. It works by taking action. In the event of a short circuit in the device being worked on, which is a series-connected lamp circuit, 25 It limits the excessive current it will draw and provides protection in the absence of a short circuit. The device being tested draws its own current, ensuring normal operation. 2 EMI filters (interference filters) filter out interference coming from the mains electricity or generated by the device itself. Electromagnetic interference consists of capacitors, resistors, and inductors. It suppresses it through. Right at the entrance of the power line and the electronic device that needs to be protected. It is used immediately before the circuits. 5 Purpose of the Invention The purpose of the invention is to enable the safe power supply and testing of electrical devices. To provide EMI at the input and output of the multi-group lamp circuit connected in series. Multiple group circuit breaker with isolation transformer and filter, temperature-dependent automatic 10 Multiple low-voltage fans will create positive airflow to remove dust from inside. The goal is to combine the cooling system, which generates the pressure, into a single box. This increases safety in cases of overcurrent, short circuit, and electric shock. Electromagnetic interference is suppressed, overheating is controlled, and A safe, practical CBR testing and working environment is provided to the user. 15 Explanation of the Figures Figure 1: Front Right Top Perspective View of the Feeding Box Figure 2: Rear Right Top Perspective View of the Feeding Box Figure 3: Bottom View of the Feeding Box 20 Figure 4: Front Left Top Perspective View of the Feed Box with Lid Open Figure 5: Front view of the feed box with the lid open. Figure 6: Top view of the feed box with the top part removed. Figure 7: Front view of the feed box with the top removed. Figure 8: Simplified General Electrical Diagram 25 3 Figure 9: Electrical Diagram of the Circuits Driving the Indicator LEDs and Cooling Fans Figure 10: Display of the Electronic Board Driving the Indicator LEDs and Fans Explanations of References in the Figure 1: Power Supply Cable 5 2: Glass Fuse Holder 3: Male Socket 4: On / Off Switch 5: Side Edge 6: DC Cooling Fan 10 7: Top Part 8: Front Cover 9: Isolated Electrical Triple Socket 10: Jack Socket 11: Digital Voltmeter 15 12: On / Off Switch 13: Emergency Stop Switch 14: On / Off Switch 15: Light Bulb Socket 16: Bulb 20 17: Support Legs 18: On / Off Switch 19: Series Connected Lamp Triple Group Socket 4 20: Star-Headed Particleboard V-shaped 21: Star Headed Chipboard V-shaped 22: Side Edge 23: Glass Fuse Holder 24: Male Socket 5 25: Del k 26: Rear Part 27: Star-headed particle board V-shaped 28: Red Strip LED 29: Green Strip LED 10 30: Domed Headed Imbus V 31: Air Filter Housing Plastic Box 32: Bottom Part 33: Plastic Clamp Holder Adhesive Plastic Attachment 34: Full Camel Neck Hinge 15 35: Ball-shaped Snap Fastener Lock 36: LED and DC Cooling Fans Driver Electronics Board 36.a (x5): DC Cooling Fan Driver Circuit 36.a.1 (x5): Windshield cover holder 36.a.2 (x5): D yot 20 36.a.3 (x5): Constant Resistance 36.a.4 (x5): Bjt PNP Trans blind 36.a.5 (x5): Bjt NPN Trans blind 36.a.6 (x5): Red LED D diode 36.a.7 (x5): Green LED Diode 36.a.8 (x5): Constant Resistance 36.a.9 (x5): Constant Resistance 36.a.10 (x5): D yot 5 36.a.11 (x5): Capacitor 36.a.12 (x5): JST-XH 2 p nl socket 36.b: V-branch Terminal Socket 36.c: Indicator LED Control Circuit 36.c.1 : Constant Power Resistance 10 36.c.2: Glass Fuse Holder 36.c.3: DC-DC Voltage Regulator Integrated Circuit 36.c.4 : D yot 36.c.5 : Bob n Pulling 5 Pin Relay 36.c.6 : JST-XH 4 pin nl socket 15 37: Isolation Transformer 38: Glass Fuse Holder 39: Electronic Temperature Thermostat Board 40: DC Cooling Fan 41: DC Power Supply 20 42: Temperature Sensor 43: Plastic Cable Tray 44: Plastic Cable Channel 6 45: Transformer Inlet Terminal 46: Transformer Output Terminal 47: Transformer Grounding Terminal 48:G r ş EMI filter 49: Output EMI filter 5 50: Star Cylinder Headed V Description of the Invention Water and impact resistant, low flame risk; made from high-density fiberboard (CDF). cut; bottom (32), side (5,22), rear (26), top (7) and support legs (17) parts 10 M3.5 x 20 mm chipboard with v-shaped holes (20) according to DIN7505 standard, Figure 1, Figure 2, Figure 3 and attached to each other at the places shown in Figure 6, the front cover (8), two 12mm It is attached to the main body with a full camel hinge (34) and has a total of 500 x 300 x 220 mm It is an electrical and electronic component housing box of a certain size. The temperature that will be generated inside cannot be kept inside the box and DC cooling fans (6,40) 15 With its help, the inner surface of this box is completely lined with fiber so that it can be easily evacuated. The support is coated with high heat resistant aluminum tape. To increase durability, To increase leak tightness, the outer surface of the box is coated with 200V ester adhesive. 𝑔 / 𝑚 is covered with fiberglass fabric. In Figure 1; 15 Ampere 250 VAC withstand standard IEC C13 tp power supply cable (1 ), 20 The side piece (5) is fixed with an M3X10 star-headed chipboard screw (21), 10 Amperes. 250VAC resistant, glass fuse holder (2), on / off switch (4) IEC C14 standard power socket (3) and above it k standard 12VDC 7.5V sockets with dimensions of 40x40x20mm. There is a CFM output DC cooling fan (6). 7 On the rear part (26) which can be seen in Figure 2, there are two 40x40x20 mm standard 12VDC 7.5V cfm outlet DC cooling fan (6) and placed on the underside of the top cover as shown in Figure 3 visible red and green indicator LED strips (28,29) power supply cables There are k holes (25) that will pass. On the outward-facing surface of the front cover (8) shown in Figure 1; isolation transformer (37) 5 The output terminal (46) is connected to the output EMI filter (49), 10 Ampere 250 VAC Durable, KCD2 type on / off switch (12), insulated electric triple group without earth connection. pr z (9) and this group pr z (9) on the upper side of the body, 4 mm standard connected directly to the ground. Jack socket (10) is located. On the front cover (8); connected to the output of the EMI filter (48) is a 10 Amp 250VAC rated, 10 KCD2 tp open / close switch (18) ground connected series lamp triple group pr z (19) , this 4mm standard jack socket (10) mounted on the pr z body and also pr z sockets k standard sockets (16) are installed, k incandescent filaments with at least 100 Watts are connected to the sockets. The bulbs (16) are connected to k jack sockets (10), electrostatic (ESD) Jack connector is for 15 On the front cover (8) group of three outlets (9,19) at the top showing the voltage coming to these outlets. round TP standard DJ voltmeters (11), in the middle upper position, these pr z (9,19) KCD2 type four-pin on / off switch with 10 Amp 250 VAC rating for controlling electricity. (14) and immediately below it is a 10 Amp 250 VAC rated AC stop switch. (13) is found. 20 On the side edge (22); through the isolation transformer (37) output terminal (46) connected to the line from the output EMI filter (49) with M3X10 star head chipboard vias(27) 10 Ampere 250 VAC with 5x32mm glass fuse holder (23) attached to the side piece (22). The robust IEC C14 power socket (24) is positioned. In Figure 3, the lower part of the supply box (32) has a 120 mm x 120 mm x 25 mm DC 25 on it. cooling fan (40 ), this DC cooling fan (40) has a MERV-8 antistatic filter. The air filter housing plastic box (31) is placed in the holder. Again, this lower part (32) M5x30 domed head mbus v da(30) with washer on the inside according to ISO7380 standard passing through. and the sheet metal feet of the isolation transformer (37) shown in Figure 6, in the form of a nut, It is fixed to the bottom plate (32). 30 8 In Figure 3, red strip LED (28) and green strip LED are glued to the edges of the upper part (7). The strip LED (29) is visible. At the normal temperature inside the box, the green strip LEDs (29) light up. When the temperature inside the box rises above the normal temperature and the DC cooling fans (6,40) come on When it is seen, the green LEDs (29) are switched off and the red strip LEDs (28) start to light up. As seen in Figure 4 and Figure 5, there are 5 on the front cover (8) and on the side parts (5,22). M3x10 star head chipboard with ball bearing snap locks (35) fastened with v-shaped (21) The mechanical locking of this front(8) cover, which can be opened and closed with the help of, has been ensured. In Figure 4, on the part of the front cover (8) facing the inside of the box; when the front cover is opened 12mm full gooseneck hinges (34) that enable it to close, keeping the box inside warm. W1209 10, which provides an output to its relay at the temperature determined by measurement and has a hysteresis accuracy of 0.1 ℃. – adjustable electronic temperature thermostat boards (39), isolated electric triple group circuit boards (9) and glass fuse on the phases coming from the series connected lamp triple group pr ze(19) holders (38); indicator LEDs (28,29); four 40x40x20mm DC cooling fans (6), LED and DC cooling controlling one 120 x 120 x 25mm DC cooling fan (40). The fans driver electronic card (36) is shown. 15 In Figure 5, the top part (7) of the box shown from the front with the lid (8) open is facing inwards. on the side is a 220 VAC – 12 VDC 5 Amper 60 W DC power supply (41), next to it is the electronic temperature thermostat which gives the DC cooling fans (6) the command to operate. (39) connected 10K NTC waterproof temperature sensor(42) and this to the top part(7) plastic Plastic clamp holder adhesive plastic device (33) 20 which enables clamping. It is seen that this temperature sensor(42) acts on the principle that heated air moves upwards. It has been positioned taking this into consideration. Again, in accordance with this rule, it pushes the air inside to the outside. The location of the DC cooling fans (6) that will discharge is on the top and rear of the supply box It is designed in such a way that the heated air rising from here is discharged. ed leb lecekt r. 25 In Figure 5, the phase coming from the EMI filter (48) on the isolation transformer (37) is shown. and the terminal (45) to which the neutral line is connected, the output of the isolation transformer (37) The grounding is connected to the output terminal (46) and the housing of the isolation transformer (37). The clamen (47) is seen. 9 In Figure 6, the front cover of the supply box is shown so that the contents of the box can be easily seen. (8) fully open and top part (7) and DC power supply (41) connected to the top part, 10K NTC The image is shown with the temperature sensor (42) removed. In Figure 6, the single-phase line from the grid is connected to the output of the EMI filter (48), 220VAC-220VAC, 1000 VA dry type single phase aluminum coiled insulation 5 transformer (37), EMI filter (49) connected to the output of this transformer (37), this On the side of the elements, a 120x120x25mm 80 Cfm DC air pressure sensor provides positive TF pressure. Cooling fan (40) is seen. All the cables that will provide the connection between the components should be neatly arranged together. 16x16mm plastic cable channels (43) to ensure it stops, cut t dimensions 10 12x12 mm plastic cable channels (44) and also plastic clamps to hold the cables tightly. The plastic clamp holders with adhesive (33) are shown. These plastic clamp holders have adhesive. apparatus (33) and 12mm full gooseneck hinges (34) M3x10 star countersunk head screws (21) is fixed to the box body (32,26,5,22,7) and front cover (8). LED and DC cooling fans driver electronic card (36) electronic temperature thermostat cards (39) : 15 M3x20 star-shaped head screws (50) are attached to the inner surface of the front cover (8). Figure 7 shows a 120x120x25mm 80 cfm DC cooling fan (40) that will create positive air pressure. The electronic temperature thermostat card (39) will activate the waterproof 10K NTC temperature sensor (42) and plastic that will enable it to be attached to the surface of the rear part (26) The purpose is to show the adhesive plastic clamp holder (33). This waterproof 20 temperature sensor(42) thinking that the air flow will be minimal and the temperature will be minimal It has been settled here. Figure 8 shows the outline of the electrical diagram and its connections. The diagram Before the explanation, the general information is as follows; the power supply box is single phase and neutral 230 VAC / It operates with 50 Hz voltage values, depending on the type of isolation transformer (37) used, 25 Although it changes, the 1000 Va isolation transformer (37) given here is in the view and Maximum operating current at output is 5 amps. Red, green strip LEDs (28,29), DC cooling. fans (6,40), electronic temperature thermostat boards (39), LED and DC cooling fans Driver electronic board (36) GB auxiliary components will operate with 12 VDC voltage value. It is designed in this way. 30 Grounding, isolation transformer (37) and glass fuses (2, 38, 23) short circuit and These are protections against electric shock risks. Phase lines are brown, 1.5 mm cross-section. High-field TTR cables, neutral lines 1.5 mm cross-section. High-field TTR cables, low current draw. It is planned to use 0.75 mm single-core cables in the systems. System minimum temperature -20℃. It can operate at a maximum temperature of +55℃ and +35℃ with 95% relative humidity. 5 From the mains with a standard IEC C13 tp socket power cable (1) with a 250VAC amperage rating. After the incoming 230 VAC / 50 Hz single-phase electricity comes into the IEC C14 standard power socket (3) The phase line is connected to the KCD-1 tp on / off switch (4) with a 10 Ampere 250VAC rating, glass 8 Ampere 250 VAC resistant 5x32mm glass fuse and 10 inside the fuse holder (2) Standard AC shut-off switch (13) with amperage rating of -250 VAC and 16A – A standard EMI filter with a resistance of 250VAC comes into view of (48). In this section, the line splits into 3; 1: The phase coming from the EMI filter output (48) is connected to a 10 Ampere – 250 VAC resistant KCD2 tp open- cover switch (14), glass fuse holder (38) inside k 5 Ampere – 250 VAC resistant 15 The circuit breaker passes through the fuse and connects to a 10 Amp - 250VAC rated KCD2 TP on / off switch. (18) from here the series connected lamp triple group pr z ne (19) comes r. Series connected lamp triple group pr z (19) , k sockets (15) connected on the phase line The incandescent filament bulb (16) is arranged to be connected in series to the phase line. Series connected lamp group pr znn (19) last pr z ne incandescent filament bulbs (16) via phase 20 The neutral connection is taken directly from the output of the EMI filter (48) when getting the lamp in series. triple group pr znn (19) ground connections are made, and series connected lamp triple group pr z(19) The 4mm standard jack socket (10) mounted on the body has a ground connection. Digital voltmeter (11) showing the voltage coming from the series connected lamp triple group pr z ne(19), glass After the 5 Ampere -250VAC glass fuse in the fuse holder(38), the phase and neutral 25 It is connected parallel to the line. 11 2: The phase from the EMI filter output (48) is a 10 Ampere – 250 VAC resistant KCD2 tp open- The isolation transformer (37) is connected to the terminal block (45) via the cover switch (14). and the neutral connection is directly connected to the neutral line of the GR EMI filter (48). The ground connection, The isolation transformer (37) grounding terminal (47) is made. Insulation Phase and neutral connection taken from the output of transformer (37) rated for 16 Ampere-250VAC 5 The output is connected to a standard EMI filter (49). To avoid damaging the insulation, the output EMI The filter(49) is not connected to the ground. At this point, the line splits into two again; 2.a: The phase from the output EMI filter (49) passes through the glass fuse holder (23) Phase and neutral are connected via a 5x32mm glass fuse with a resistance of 250 VAC. The connection is made to a standard IEC C14 socket (24) with a 10 Ampere – 250 VAC rating. No ground connection is made to the socket(24). 2.b: The other phase coming from the output EMI filter (49) is inside the glass fuse holder (38) 5 5x32 mm glass fuse with 250VAC rating, 10 amp 250 VAC rating. Passing through the KCD2 tp on / off switch (12), the insulated electric triple group pr z (9) all pr zler ne, 15 The phase and neutral connections are made. This insulated electrical triple group is grounded to the sockets (9). No connection is made. The isolated electrical triple group shows the voltage coming to the sockets (digital display). voltmeter (11), 5A – 250 VAC glass fuse inside glass fuse holder (38) The phase and neutral are connected in parallel. 3: Phase, neutral and ground connection from the input EMI filter output (48) 220VAC-12VDC 5 The 60W capacitor comes to the DC power supply (41) and the 12VDC voltage obtained here. The positive and negative terminals of the k number of electron k temperature thermostat cards (39) are +12VDC and GND What terminals are connected to? 12 The terminals K0(1) and K0(2) of the electronic temperature thermostat boards (39) are 10K NTC. When the temperature inside the box increases depending on the value from the temperature sensors (42) and the temperature values ​​determined on the electronic temperature thermostat cards(39) When the voltage is exceeded, it provides a +12VDC output voltage. These outputs are used to control the LG fan and LEDs. LED and DC cooling fans driver electronics board(36) branch terminal socket NE 5 (36.b) is related. This branch V comes through the terminal socket (36.b) and the K0(1) +12VDC voltage is shown in the diagram. four DC cooling fans (6) driver circuit ( 36a (x5)) and indicator LEDs The control circuit (36.c) is connected to K0(2) and one DC cooling fan (40) is connected to the driver circuit. 36.a(x5)) and the indicator LEDs are connected to the control circuit (36.c). 10 As shown in Figure 9, the DC is connected after the terminal socket (36.b). cooling fan driver circuit (36.a) and indicator LEDs control circuit (36.c) It has been detailed. The DC cooling fan driver circuit (36.a) receives +12VDC from the terminal socket (36.b) and The indicator LEDs operate with +9 VDC continuously supplied from the control circuit (36.c). Box 15 When the indoor temperature exceeds the set value, the relevant electronic temperature thermostat boards... (39) Incoming K0(1) or K0(2) signals are inside the glass fuse holder (36.a.1(x5)) 5x32mm 1 Amp 12VDC resistant glass fuse, diode (36a.2(x5)), fixed Passing through the resistors (36.a.3(x5)), PNP transistor (36.a.4(x5)) and NPN trans stör(36.a.5(x5)) comes to the base legs and accordingly NPN trans stör (36.a.5(x5)),constant 20 Passing through the resistor (36.a.9(x5)), the 3mm green LED (36.a.7 (x5)) emits light, PNP Transistor (36.a.4(x5)) cuts off the red LED (36.a.6(x5)) and turns off the DC cooling. The fan(6,40) is running. If the temperature inside the box is within the desired values, +12VDC K0(1), K(2) signals do not arrive, NPN transistor (36.a.5(x5)) cuts off transmission, 3mm green LED (36.a.7 (x5)) It goes out. PNP trans stor (36.a.4(x5)) , constant td resistance (36.a.8(x5)) passing through 3mm 25 red LED (36.a.5(x5)) emits light. 13 This allows the DC cooling fans (6,40) to operate when they are not working or when there is any overcurrent. Therefore, the circuits of the glass fuses inside the glass fuse holders (36.a.1(x5)) In case of interruption, each DC cooling fan driver circuit (36a (x5)) red LEDs (36.a.6 (x5)) gives information to the user by emitting light. DC Cooling fans (6, 40) are activated. When you see it, you will find the 3 mm green 5 in the DC cooling fan driver circuits (36.a (x5)). LEDs (36a.7 (x5)) provide information to the user by emitting light. JST-XH socket (36a.12 (x5)), DC The cooling fans (6,40) are connected to kp nl male sockets. This socket n (36.a.12 (x5)) right behind it, the DC cooling fans (6.40) can function properly and have a long lifespan. It should have nbr number of non-polarized lenses, capacitors (36.a.11(x5)) and the positive pole reversed. b mde diode (36.a.10(x5)) is connected. 10 Indicator LEDs control circuit (36.c) generally consists of one DC-DC voltage regulator. It operates with an integrated circuit (36.c.3) and k coil puller 5 pin relay (36.c.5). ​​DC-DC voltage. The regulator integrated circuit (36.c.3) converts the +12VDC it receives from the terminal socket (36.b) to +9VDC. For use in DC cooling fan driver circuits by converting to VDC k (36.a (x5)) bjt PNP transistors send current to the terminals (36.a.4(x5)). Avoid excessive current draw. 15 To prevent this, a fixed power resistor (36.c.1) is installed in this DC-DC voltage regulator integrated circuit. (36.c.3) is connected to the GND pin. +12VDC from the terminal socket (36.b) is supplied to the glass fuse holder (36.c.2) 1A-12VDC resistant glass fuse with coil puller, 5-pin. relay n(36.c.5) common pn ne and from there via normally closed (NC) connection JST-XH 20 The 4-pin connector is connected to the socket (36.c.6). The green light is supplied via +12VDC through the normally closed contact. The colored indicator strip LEDs (29) give light. This situation is the electronic temperature thermostat. From the cards (39) K0(1) and K0(2) signals did not arrive and the box temperature was not as desired. It shows that it is at the temperature. With the increase in temperature and exceeding the specified value, K0(1) and K0(2) signals pull the coil 5 pin relay (36.c.5) to the end of the coil 25 by applying relay n(36.c.5) to close the normally open (NO) contact. +12VDC's, JST XH 4 pin nl sockets n(36.c.6) 14 Thus the green indicator strip LEDs (29) are switched off, and the red indicator strip The LEDs (28) start to light up. This is because the temperature inside the box increases and DC cooling is activated. It indicates that the fans (6,40) are working. Due to reverse induced current, the voltage peaks. To prevent this, the bobbin case should be pulled and the 5-pin relays (36.c.5) should be connected to the positive pole of the bobbin case legs. The diode (36.c.4) is connected in reverse. 5 In Figure 10, the LED and DC circuits described above are shown for better illustration. Perspective view of the Cooling Fan Driver Electronic Board (36) and the controller used. elements; Glass fuse holder (36.a.1 (x5)), D yot (36.a.2 (x5)), Fixed Resistance (36.a.3 (x5)), Bjt PNP Trans blind (36.a.4 (x5)), Bjt NPN Trans blind (36.a.5 (x5)), Red LED D yod (36.a.6 (x5)), Green LED D yod (36.a.7 (x5)), Fixed Resistance (36.a.8 (x5)), Fixed 10 Resistor (36.a.9 (x5)), D yod (36.a.10 (x5)), Capacitor (36.a.11 (x5)), JST-XH 2 pin socket (36.a.12 (x5)) , V-branch Terminal Socket (36.b) , Fixed Power Resistor (36.c.1), Glass Fuse Holder (36.c.2), DC-DC Voltage Regulator Integrated Circuit (36.c.3), Diode (36.c.4), Coil The pull-out 5-pin relay (36.c.5) and JST-XH 4-pin socket (36.c.6) are clearly shown. Industrial Application of the Invention Section 15 The invention concerns an automatically cooled, EMI filter, series lamp & insulated socket power supply. The box can be easily manufactured in industrial environments using standard production methods. The box body is waterproof, impact-resistant and flame-retardant. It can be produced from high-density fiberboard (CDF) material on woodworking machines and 20 Standard particle board can be joined with V-shaped panels. Fiber-reinforced fire-resistant aluminum tape. The inner coating is made of fiberglass knitted fabric, and the outer coating has potential electrical and fire risks. The counter-effect is increased. EMI filter, dry-type isolation transformer, DC cooling fans, electronic temperature. Thermostat boards, multi-group power supplies, light bulbs, sockets, switches, resistors, relays, 25 Cables and other circuit components can be easily obtained from local markets, and It can be combined with soldering, screwing and assembly steps. Cooling system that creates positive pressure inside with the help of commonly used DC fans, s stem n central dry tp isolation transformer for long-term use By maintaining maximum stability, it will improve the safety and performance of the device. Isolation Electromagnetic interference (EMI) located at the transformer's input and output. The filters protect against both unwanted interference from the mains and from the 5 of this power supply box. By preventing the parasites that it may create, it ensures the safe power supply of sensitive measuring instruments. It will provide. In invention, testing and measurement centers, and in maintenance and repair workshops of industrial enterprises, In electronics laboratories, production line control systems, and power supplies, directly... It is available. 10 The materials and methods required for mass production are readily available on the market, and the invention... Its repeatability and industrial applicability are complete.

Claims

16 Requests 1. The invention is a portable power supply box with an isolation transformer, the characteristic of which is; C device. to ensure safe operation of at least one dry type isolation transformer(1), at least k filters that reduce electromagnetic interference (EMI) and mains noise. circuit (2), box interior temperature control for fan automatic cooling system 5 (3) is that it must have at least two multi-group sockets (4) for electrical connection.

2. According to Requirement 1, it is a portable power supply box with an isolation transformer, and its features are: The box material is compact high-density fiberboard (CDF).

3. According to Requirement 2, it is a portable power supply box with an isolation transformer, and its features are; The box opens and closes with hinges that allow access to the inside of the front lid. 10 It is the fact that.

4. According to Requirement 2, it is a portable power supply box with an isolation transformer, and its features are: The box surface is covered with a fiber-reinforced, fire-resistant, adhesive aluminum sheet.

5. According to Claim 2, it is a portable power supply box with an isolation transformer, and its features are: The outer surface of the box is covered with NNVNL ester-bonded glass fiber knitted fabric. 15 6. According to Requirement 1, it is a portable power supply box with an isolation transformer, and its features are: Multiple group prisms, at least one of which will operate using the series-connected lamp principle. The problem is that the internal system has been changed.

7. According to Claim 1, it is a portable power supply box with an isolation transformer, and its characteristics are: Multiple group prism housings integrated with electrostatic discharge (ESD) bracelet 20 It has at least one jack socket that provides the connection.

8. According to Requirement 1, it is a portable power supply box with an isolation transformer, and its features are: at least two low-voltage devices that allow for the removal of unwanted dust from the box. The cooling fan creates positive pressure inside the box.

9. According to Request 1, it is a portable power supply box with an isolation transformer, and its feature is; 25 at least one that enables the control of low-voltage cooling fans and LEDs. pieces of electronic card casing.

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