operations management multiple choice questions and answers pdf
300W ATX Power Supply Schematic Diagrams : Full Text Matches - Check >> Found in: fulltext index (97) atx 300w.rar: 16/10/04: ATX 300 W power supply scheme: 87 kB: 32462: InWin:. Step 2 - Check if the input of your strip is 12V, 24V or 48V DC. Check the product specifications or markings on the strip. It is important to check because wrong voltage input may result in malfunction or other safety hazards. Also, some strip lights use AC high voltage and do not require a power supply.
Power supply is a reference to the source of electrical power. Most electronic circuits require a DC power supply. Chances are you have one at home already, and can use it for physical computing projects. The most common operating voltages for microcontrollers and digital processors are 5V and 3.3V. You can find power supplies in many voltages .... Dec 23, 2014 · Browse through a total of 11 Some interesing DC/DC converter circuits for 1.5V, 3V, 6V, 9V and 12V.. Apr 03, 2009 · be applied for the circuit to function. DC is the basis for most circuit designs that goes into everyday products. If a circuit has no power a circuit would not be able to perform its desired function. A variable DC power supply, seen in every electronics lab, on the market today costs around $300. These lab power supplies are very good for .... Electronic Fuse. This is adjustable elctronic fuse that can be used to protect power supplies from short circuits or can be also used to limit the current usage. It can be adjusted for currents. 2021. 11. 22. · AC to DC power supplies circuits, schematics or diagrams. ... two linear amplifiers are ment for use with QRP SSB/CW/FM/AM transmitters on the amateur bands 15 and 17 meters can be powered from a 12 volt DC supply. The design is a good balance between ... 12V to 110V/220V DC-AC 300W Inverter- Schematic only __ Designed by.
super cheap diy pond filter
veredus over reach boots
2023 specialized epic evo
Description. H ere is the circuit diagram of 9 V regulator using popular 7809 IC. The 7809 is a 9 Volt voltage regulator IC with features such as internal current limit, safe area protection, thermal protection etc. A 16 V transformer brings down the 230V mains, 1A bridge rectifier rectifies it and capacitor C1 filters it and 7809 regulates it. 2021. 3. 8. · Then we rectify the 9V AC to 9 V DC using a diode bridge rectifier [Full wave rectifier]. After the rectifier, we have used Capacitors to filter the ripple from the circuit and fed it to the input of the 7805 voltage regulator. 7805.
creek county jail phone number
is usdt safe
mature tampon pics
Apr 17, 2016 · Unless your designs are pushing the tubes right to their limits, most tube amplifier circuits operate equally well with power supply variations as large as +/- 20%. For our transformer that means somewhere between 192v and 287v. Suddenly exactly matching that 239v number doesn't seem nearly so important.. Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free.
dubai packages 4 nights 5 days with flights
bolts made in australia
The CSI3710A is a programmable bench top electronic DC load with finely adjustable voltage and current inputs. This fully programmable DC electronic load is capable of supporting a maximum of 150 watts of power in any combination of 360 volts and 30 amps. This DC electronic load's large capacity makes it useful with a huge combination of. 2020. 2. 18. · Output voltage and dual supply connection. The output voltage is set by the resistor divider (R1, R2, and R3) connected to the LT108x feedback pin, which is regulated at 1.25V below the output. For details, refer to the LT108x. The PSM Series DC power supplies provide an isolated and regulated 24 volt DC output from a voltage input of either 120 volt AC or 24 volt AC. Each power supply model is UL listed for use in Class 2 circuits. ... STOCK DC POWER SUPPLY CALIBRATED TO 12VDC OUTPUT: 99.96 ... Output Current:PSM24/PSM19: 300 mA @ 24 VDC, 125 mA @ 12 VDC, 116 mA @ 10.
Mar 19, 2009 · Mar 19, 2009. #1. I am looking for a super simple circuit for a 300 to 320 volt dc power supply. I made a bank of 50 photo flash capacitors for various experiments and projects. the flash circuit from the cameras just dont have the ooomph to charge them all up. Besides its much more fun to build my own. It doesnt really matter if its powered by ....
brothers and sisters song 1990s
2011. 12. 12. · Here this circuit diagram is for +12V regulated (fixed voltage) DC power supply.This power supply circuit diagram is ideal for an average current requirement of 1Amp. This circuit is based on IC LM7812.It is a 3-terminal (+ve) voltage regulator IC. It has short circuit protection , thermal overload protection. LM7812 IC is from LM78XX series.
fat quarter baby quilt patterns free
565 vs 582 bbc
river city residential services
Look at the pic of how to connect the batteries and where to take a 24vDC wire from. 3> R1 is to set the PWM duty cycle to 220v. Connect a voltmeter to the AC output of your inverter and vary VR1 till the voltage reads 220V. 4> R2 is to set the frequency to 50 or 60 Hz (R2 range is between 40Hz to 75Hz), so guys that do not have a frequency .... The data sheep provides several simple circuit examples. You should be able to find a line stepdown transformer easy enough that will take mains down to around 30 Volts and a few rectifiers to comprise a full wave bridge. For example TRANSFORMER, LOW POWER, 117V, 50/60HZ, 28.0VCT @ 2.000A, LEADS. Instead, she has access to several "power supply" units which convert 120 volt AC power from a power receptacle into low-voltage DC power that is adjustable over a range of 0 to 15 volts. Each of these power supplies is a box with a power cord, voltage adjustment knob, and two output terminals for connection with the DC voltage it produces:. DC Power Connectors. DC Power Connectors are available at Mouser Electronics from industry leading manufacturers. Mouser is an authorized distributor for many DC power connector manufacturers including CUI Devices, Kobiconn, Kycon, Switchcraft & more. Please view our huge selection of DC power connectors below. Products (914) Datasheets. Images.
your name 360p download
coquette stores near me
anime brush photoshop
change color of svg circle
league of legend crack
Feb 13, 2018 - Schematic diagram and theory of operation of a 12 volt AC to DC SMPS power supply. Includes PCB layout, ... Feb 13, 2018 - Schematic diagram and theory of operation of a 12 volt AC to DC SMPS power supply. Includes PCB layout, transformer winding information and parts BOM. Pinterest. Today. Explore.
arrestos phoenix az
tool auction new hampshire
Linear / Regulated Power Supply Design AC-to-DC Power Conversion (12V DC) ... Fuse Protected with Auto-Reset Electronic Overload & Short Circuit Protection Rugged & Durable Housing Construction, Cabinet Heatsink Anti-Skid Rubber Feet LED Indicator Lights Power ON / OFF Switch. SKU: PSV300: Manufacturer Model # PSV-300: UPC: 068888882026: Case. It can deliver DC (1-30V) and up to 10A current depends on your input power source, in my case I'm using DC 12V 3A input power source. I easily get continuously adjustable output voltage (1-30V) and current (0-6A), which is pretty enough for circuit testing and other things.I'm also using 7805 voltage regulator IC for 5V constant voltage and ....
Roger Johansson said: A really cheap and simple way to get a dual supply: Get two 15 Volt wall-warts, connect the minus output of one to the plus. output of the other and call that connection Ground. Now you have a dual power supply, which has three connections, Ground, plus 15 and minus 15 Volt.
Step 3: Design & Schematic. Okay, so here's the idea: A simple, pluggable PSU that slots into the power rails at one end of a standard breadboard. Referring on the schematic: Power source: almost any standard DC power brick ("wall wart") with a barrel jack, providing at least 12V should do the trick. High voltage power supplies are complex power conversion circuits that convert a lower voltage potential to a higher voltage potential. Typical output voltages for high voltage power supplies are 1kV to 360kV, although ranges of 62V to 500kV are offered. Spellman’s range of output power spans from less than a watt to over 200 kilowatts..
swgoh potency up
indie folk chords
DC-DC Converter (12 volt to 200-300 Vdc) DC/DC Schematic Features This DC-DC converter charges a 1uF capacitor at 250 volt in aprox. 1 msec. This theorically lets the CDI spark near 1000 times per second, 60,000 rpm in a single cylinder engine (1 spark per rev), 30,000 rpm rpm in a 4 cylinder engine (1 spark each 2 revs per cylinder). Designers of low voltage power circuits are often unaware of the implications of voltage drop and wire size. In conventional home electrical systems (120/240VAC), wire is sized primarily for safe amperage carrying capacity (ampacity). The overriding concern is fire safety. In low voltage systems (12, 24, 48VDC) the overriding concern is power loss.
2015. 8. 31. · There are many voltage regulator ICs available in the market. For 5V dc output we are using LM7805, for 9 V dc power supply we are using LM7809, for 12 V dc power supply we.
pycharm collapse all methods
94 chevy 350 tbi vacuum line diagram
. View all results for dc power supply at Sweetwater — the world's leading music technology and instrument retailer! ... 1 x 18V Output, LED Status Indicators, Short Circuit/Thermal Protection, Universal AC Adapter, and 5 DC Power Cables ... Pedal Power Supply with 3 x 9-volt DC Outlets, 2 x 9/12-volt DC Outlets, 1 x 12/15-volt DC Outlet, 2 x 9.
best jazz piano books for beginners
ps3 games remastered for ps5
4 Steps to Convert 230V AC to 5V DC. 1. Step Down the Voltage Level. The step-down converters are used for converting the high voltage into low voltage. The converter with output voltage less than the input voltage is called as a step-down converter, and the converter with output voltage greater than the input voltage is called as step-up. 2018. 10. 24. · MIDDEX Electrical energy storage for TYPE GI 31 No UKV InA INPOTRON DC Power Supply PSUD Output 24V 4A . of temperature controller LKBQMBWOG-XHT3 cicuit. ac dc power supply, 12 volt power supply, 24v dc power supply, telecom power supply, 1U rack mount power supply ... Used rapid power technologies - 125v 300 amp dc power supply for sale posted by dcpowersupply at 11:25 PM 0 comments. ... Dc Power Supply Circuit posted by dcpowersupply at 10:15 PM 0 comments. Dc Switching Power Supply.
The most commonly used type of power supply circuit is the SMPS (Switching Mode Power Supply), you can easily find this type of circuits in your 12V adapter or Mobile/Laptop charger. In this tutorial, we will learn how to build a 12v SMPS circuit that would convert AC mains power to 12V DC with a maximum current rating of 1.25A. This circuit. 3-12V DC 7.2W Power Supply 7DC Plugs and USB Outlet. CAT.NO: MP3310. $19.95. Add to cart. compare. Wishlist. Check Store. 3-12V DC 27W Power Supply 7DC Plugs and USB Outlet. CAT.NO: MP3316.
bannerlord best two handed axe
lenovo tb2x30f stuck on logo
Meet all your requirements with our modular power supply concept "connectPower". The power supply products can also be used universally in conjunction with our Industrial Ethernet, lightning and surge protection, relays.
bul armory tac 5 price
biology corner microscope
Therefore in this variable power supply circuit using 2N3055 transistor, the transformer being a 0 - 40 V, the output becomes variable right from 0.6 to 40 volts maximum, that's very handy indeed. For implementing the current control feature, T3 along with P1, R5 and R4 are involved. The value of R4 is specifically becomes responsible for. 24 Volt DC power supplies from leading power supply manufacturers. Hundreds of different 24 Volt models to choose from. Shop for a 24Vdc power supply on-line or call us for expert assistance at 1-888-612-9514. Sales Questions? ... 300-499W ; 500-749W ; 750-999W ; 1,000-2,499W ; 2,500W+ Input Voltage; 80-264 Vac ; 80-305 Vac ; 85-264 Vac ;. pointsbet illinois registration locations; kendo grid remove row without refresh; what happened to rosemary walten; fiat doblo fault codes; how to load motorcycle in.
belgian malinois for sale in belgium
ezgo txt 48v speed chip
Apr 03, 2009 · be applied for the circuit to function. DC is the basis for most circuit designs that goes into everyday products. If a circuit has no power a circuit would not be able to perform its desired function. A variable DC power supply, seen in every electronics lab, on the market today costs around $300. These lab power supplies are very good for ....
2022. 5. 8. · For the VIN input use a 0V-50V, 3A adjustable power supply Our portfolio covering solutions in industrial, medical, and LED lighting Part number 056041670001 or 056041671001 can be found within serial number on barcode sticker on board 283 Kbytes: 963 Manual and schematic 1 Power Supply Connection 10-11 6 1 Power Supply Connection 10-11 6.
the old man imdb
tds wifi modem t3200 internet light orange
The original adapter was 12 volt 12.5A output, I found a used Xbox one power adapter and its rated for 12 volt 17.9A. the printer is pretty flexible on its power supply needs but more amps is better. Question - I have the dc end of the power cord moved into the xbox one adapter in the appropriate terminals, (12V and GND2) all is good so far. Simple +5V power supply circuit: Power: Jan 26, 2001-1: Basic 78xx series regulator mains power supply circuit diagram: Power: Oct 25, 2009-2: USB charger circuit diagram: Power: Aug 18, 2009: 0: Advanced High Voltage PSU circuit: Power -1: 12 Vdc - 120 Vac Inverter Schematic: Power: Jan 01, 2003-2: Single to 3-phase power conversion: Power -1. Also Q = C ⋅ Δ V, where C is the capacitance and ΔV is the voltage drop as the current flows out. So C ⋅ Δ V = Q = I ⋅ t. Rearranging gives C = I ⋅ t Δ V. For your 0.1 A power supply, 50Hz, full-wave rectified, and a 1 V ripple specification the capacitor required is. C = 0.1 ⋅ 0.01 1 = 0.001 F = 1000 μ F. Feb 22, 2016 · To calculate the necessary value of your resistor, start with the open circuit voltage of the power supply, then subtract the voltage of the fully charged battery pack. This gives you the voltage across the resistor. To find the resistance, divide the voltage difference by maximum current. In my case, the power supply had an open circuit ....
2021. 9. 21. · The output voltage of this variable DC power supply can be adjusted from 1.2V to 30V at a current of 1A. ... UC3842 EI33 ATX TRANSFORMER 12 VOLT 5 AMPS FLYBACK SMPS. . Here is the variable high voltage dc power supply circuit, which we can customize the output voltage from 0 to 311Vdc, and it is protected the current over the limit that we define at about 100 mA. You may like these LM338 5A Variable regulator Better life with high current in same voltage 1.25V to 30V. 43 results for 300 amp dc power supply. Save this search. ... Lambda LA-300 DC Regulated Power Supply MODIFIED w/ Mini Circuits ZHL-48 AMP. Pre-Owned. ... Nemic Lambda SR300-10/5G 10 Volt 30 Amp DC Power Supply Advantest Test System. Pre-Owned. C $71.16. Top Rated Seller Top Rated Seller. A DC-to-DC boost converter circuit is a circuit that can convert a DC voltage into a larger DC voltage. So, for example, you may be able to convert a 5V DC voltage into 30V. A DC-to-DC converter works on the principle of an inductor primarily and a capacitor. When fed DC power, the inductor acts as a energy storage device for current.
sri rama slokas and mantras
chemical equilibrium multiple choice questions and answers pdf
Luckily Ernie Ball has a solution - the Volt power supply. Measuring in at just 90 x 59 x 23mm - smaller than a pack of Super Slinkys - the Volt will happily fit on the smallest of 'boards. This pocket-size pedal power unit includes five 9/18V isolated DC outputs - at 300mA - and if that isn’t enough, you can also daisy chain units together to expand the number of pedals you can. 1 day ago · Ferrite Transformer Turns Calculation Ferrite transformer primary turns calculation 1 V2 = 60 V, V1 = 240 V and N2 = 500 i) K= 1 2 V V = 240 60, So turns ratio, 4 1 or 1 : 4 ii) 500 N1 = 1 4, Therefore, N 1 = 2000 Example 5 The winding has a total capacitance to ground Cg = 2500 pF and a total series capacitance Cs = 200 pF A formula from the data sheet i source form net:.
Here is a design for a 500 watt bench power supply featuring: 2 modes: 50 volt 10 amp or 25 volt 20 amp maximum. voltage regulation from 0 volts to full scale. current regulation from 0 amps to full scale. Floating outputs. This is the schematic for the design:.
flexible octopus tariff 2022
A work bench power supply is a DC power supply unit which can provide different regulated DC voltages which is used for the purpose of testing or trouble shooting. A simple circuit of regulated power supply with battery backup has been designed which can be used as a work bench power supply. It gives 12 volts, 9 volts and 5 volts regulated DC. It can deliver DC (1-30V) and up to 10A current depends on your input power source, in my case I'm using DC 12V 3A input power source. I easily get continuously adjustable output voltage (1-30V) and current (0-6A), which is pretty enough for circuit testing and other things.I'm also using 7805 voltage regulator IC for 5V constant voltage and.
motor predator 670
how to connect roku tv to wifi without remote
APW8 power supply is a high-efficiency DC power supply designed and manufactured by our company. ... 2.21 AC inputs EMI to PFC circuit schematic, focus on measuring whether F1 insurance, U2 rectifier bridge, Q4, D7, ... External supply 12V 1A. AC200-240V 输入: AC200-240V input 16A 开关: 16A switch 被测电源:. Ernie Ball Volt - 9- and 18-volt Power Supply. Isolated Pedalboard Power Supply with 4 x 9V Outputs, 1 x 18V Output, LED Status Indicators, Short Circuit/Thermal Protection, Universal AC Adapter, and 5 DC Power Cables. $99.99. Or $5.00/month§ with. 24 mo. financing* i. Simple +5V power supply circuit: Power: Jan 26, 2001-1: Basic 78xx series regulator mains power supply circuit diagram: Power: Oct 25, 2009-2: USB charger circuit diagram: Power: Aug 18, 2009: 0: Advanced High Voltage PSU circuit: Power -1: 12 Vdc - 120 Vac Inverter Schematic: Power: Jan 01, 2003-2: Single to 3-phase power conversion: Power -1.
The diagram below shows a partial schematic of a 450 watt ATX power supply. Its construction is typical for a modern computer PSU with MOSFET switches and active power factor correction (PFC). ... (PFC) and DC link B+ for output converter. Its power train consists of the following part: paralleled MOSFETs Q3 and Q10, inductor L11, diode D27. Protection - Against short circuit & over load High Voltage DC Regulated Power Supply -300V/5A are constant Voltage & Current Constant type supplies, have high regulation for Load & Line Voltage variation. The supply is protected against short circuit & over load. The output current can be controlled to any value from 0 to maximum. Inside the power supply. Four dual-diode high power Schottky rectifiers along with their heat sinks, several small capacitors, and a 5 volt three-terminal regulator were recycled from dead computer power supplies. Lengths of recycled twisted pair CAT-5 wiring were used to construct the four very low ohms balancing resistors for the NPN pass. 2021. 9. 1. · Many Analog Electronic circuits require dual power supply rails for proper balanced operation one being the Operational amplifier circuit. Negative supply voltage is also required.
breton female names
asus rt ax82u review
• Do not self-repair the power supply, there are no user-serviceable parts inside Operations 1 Ensure 24V DC power supply is off 2 Connect HVPS-300 to the load and to 24V DC power supply. Do not apply 24V DC power until the setup is completely assembled 3 Disable HVPS-300 (pin 2 of Interface) 4 Set HV Program to 0V (pins 7 and 9 of Interface).
- cellular data not working on iphone 11 – The world’s largest educational and scientific computing society that delivers resources that advance computing as a science and a profession
- godot nodes list – The world’s largest nonprofit, professional association dedicated to advancing technological innovation and excellence for the benefit of humanity
- makeup commercials 2022 – A worldwide organization of professionals committed to the improvement of science teaching and learning through research
- fox ardagh tobacco – A member-driven organization committed to promoting excellence and innovation in science teaching and learning for all
- manga school – A congressionally chartered independent membership organization which represents professionals at all degree levels and in all fields of chemistry and sciences that involve chemistry
- remington pump 22 serial number lookup – A nonprofit, membership corporation created for the purpose of promoting the advancement and diffusion of the knowledge of physics and its application to human welfare
- turn on wifi hotspot disabled in ubuntu – A nonprofit, educational organization whose purpose is the advancement, stimulation, extension, improvement, and coordination of Earth and Space Science education at all educational levels
- buying credit cards on dark web – A nonprofit, scientific association dedicated to advancing biological research and education for the welfare of society
racine county accident today
why do i get jealous when the girl i like talks to other guys
12V 15A voltage regulator. May 4, 2009. Description. Here is the circuit diagram of a powerful 12V regulator that can deliver up to 15 A of current.The common voltage regulator IC 7812 (IC1) is used to keep the voltage at steady 12V and three TIP 2599 power transistors in parallel are wired in series pass mode to boost the output current. RHINO and WAGO DIN-rail mounted switching power supplies provide dependable DC power in easily-mounted plastic or metal housings. Cost-effective units offer a wide range of capabilities, from simple power conversion to super-high efficiency operation and hazardous location ratings. Starting at. $24.00. (PSB12-015-P).
catholic for life homilies
sun tee bahamas
Jan 25, 2012 · This one is a high voltage power supply circuit that gives an output of +600V DC. The circuit acts as a full wave voltage doubler and when mains voltage (230V) applied to the input the output DC level becomes nearly 600V DC. There are only a few components in the design. You can see a fuse connected serially to the input with the R1 resistor to ....
- crunchyroll ios – Open access to 774,879 e-prints in Physics, Mathematics, Computer Science, Quantitative Biology, Quantitative Finance and Statistics
- hdwificampro reset button location – Streaming videos of past lectures
- can i use bybit in uk 2022 – Recordings of public lectures and events held at Princeton University
- sneaker leaks twitter – Online publication of the Harvard Office of News and Public Affairs devoted to all matters related to science at the various schools, departments, institutes, and hospitals of Harvard University
- epic movie scores – Interactive Lecture Streaming from Stanford University
- Virtual Professors – Free Online College Courses – The most interesting free online college courses and lectures from top university professors and industry experts
blue book car value canada
anime mugen 100 characters apk
High-voltage power supplies, precision universal power supply. precision HV power supply. PNC series - output voltage up to >300.000 Volt, output current up to 3.000 mA. PNC3p series - output voltage up to 60.000 Volt, output current up to 10.000 mA. residual ripple < 0,01% pp, as PNChp up to 0,001%pp. Re: AT Power Supply Schematic. 05/31/2015 1:33 PM. I meant to write, 80V max. The PCB comes with 100-volt output caps installed, and the switching transistor, Q1, a SUP85N10, is rated at 100V. This boost circuit was discussed in an earlier CR$ thread, Power-Supply-DC-DC-S tep-Up-Converter-Pro blem, where, having bought one these eBay supplies. 2021. 9. 11. · A basic power supply circuit will fundamentally require three main components for providing the intended results. A transformer, a diode and a capacitor.The transformer is the. 2002. 6. 2. · DC to DC Power Supplies #-A. DiscoverCircuits.com, has 45,000+ electronic circuits, cross ... electronic schematics and designs ... How to Build a Versatile 0 to 12 Volt Adjustable. RD RD6018 DC Power Supply Variable Adjustable Lab Bench Power Supply Buck Converter Step Down Switching Regulated 4-Digital LCD Display 60V 12-18A 800W 4.3 out of 5 stars 75 1 offer from $235.99. PARTS AND MATERIALS. One 12AX7 dual triode vacuum tube. Two power transformers, 120VAC step-down to 12VAC (Radio Shack catalog # 273-1365, 273-1352, or 273-1511). Bridge rectifier module (Radio Shack catalog # 276-1173) Electrolytic capacitor, at least 47 µF, with a working voltage of at least 200 volts DC. Automotive ignition coil. 24 Volt DC power supplies from leading power supply manufacturers. Hundreds of different 24 Volt models to choose from. Shop for a 24Vdc power supply on-line or call us for expert assistance at 1-888-612-9514. Sales Questions? ... 300-499W ; 500-749W ; 750-999W ; 1,000-2,499W ; 2,500W+ Input Voltage; 80-264 Vac ; 80-305 Vac ; 85-264 Vac ;. January 21, 2016 by David Williams. The job of the capacitor in the output filter of a DC power supply is to maintain a constant DC value by removing as much power ripple as possible. Because these capacitors have a DC value, they are actually storing a lot of energy that never gets used. All AC-DC converters, whether they are linear supplies. Feb 22, 2016 · To calculate the necessary value of your resistor, start with the open circuit voltage of the power supply, then subtract the voltage of the fully charged battery pack. This gives you the voltage across the resistor. To find the resistance, divide the voltage difference by maximum current. In my case, the power supply had an open circuit ....
300-640 Fahrenheit; 320-900 Fahrenheit; 470-900 Fahrenheit; 572-842 Fahrenheit; Lead-Free OK? NO; ... IRON/TWEEZER ONLY; INCLUDED; Product Type. Wall-mount power supply; AC Power Supply; Switching DC Power Supply; DC Power Supply # of Outputs. 1; 2; 3; Tool Type. Tool-Kits; Screwdrivers; Cutters-and-Strippers; Crimpers-and-Connectors; Wire.
lipo laser cavitation before and after photos
walking with dinosaurs comet