Bob’s Ring Tester for Inductors & Transformers, Comparable to Blue RingTester
Bob’s Basic Wide Range Ring Tester for Inductors & Transformers, Comparable to Blue RingTester, CMOS ICs Please note: The picture is just to show the measurement result. The package does not include any batteries. Overview of Bob’s Basic Wide Range Ring Tester For more information, please refer to the Youtube video. https://www.youtube.com/watch?v=BgkR4e1XfhU&t=40s https://www.youtube.com/watch?v=ZIQkxwHbHKs Design and Comparison: Bob designed a basic version of the “Blue2” microcontroller-based wide range ring tester called the basic wide range ring tester. Unlike the “Blue2,” this version utilizes 4000 series CMOS ICs and through-hole components, making it accessible for individuals with electronic skills to build. It is larger than “Blue2” and operates on a 9V alkaline battery with manual power control through a push-on/push-off button. It lacks automatic turn-off and low battery warning features. Operational Principle: The tester operates by discharging a low-loss polypropylene capacitor, which is charged to 2V, into an inductor approximately five times per second. A functioning inductor or transformer winding will form a resonant circuit that produces a ringing waveform. If short-circuited turns are present, they dampen the resonant circuit, reducing the ringing. Circuit Description: The device uses the same front-end circuit as the “Blue2,” where the waveform is fed into a high-impedance JFET buffer. The waveform is then processed by half of an LM393 dual comparator with hysteresis to generate square waves until the ringing voltage decays to about 30mV peak-to-peak. The resulting square waves are counted by a CD4518B dual decade counter. The counts are displayed using a pair of CD4511B latch/decoder/7-segment driver ICs. An additional feature prevents the counter from resetting incorrectly if it reaches 99. Theoretical Use: The tester is useful for diagnosing faults in inductive components such as transformers and chokes found in electronic equipment like switch mode power supplies, LCD backlight inverters, and older CRT transformers. These components are often expensive and hard to replace, making accurate diagnosis essential. Testing Methodology: The tester is capable of testing both high-frequency types with ferrite cores and low-frequency iron-cored transformers. It outputs a low voltage that usually allows inductive components to be tested in-circuit unless other circuit faults interfere. For definitive results, components should be tested individually. Interpreting Results: High-quality ferrite-cored transformers typically show readings between 50 and 99 rings. A reading below 10 usually indicates shorted turns. However, anomalies like a fully shorted secondary winding could misleadingly show higher readings, such as 37 rings. The effect of partial shorts in primary windings can be tested by inducing shorts in secondary windings, providing a comparative analysis between suspected and known good transformers. Low-frequency transformers typically show lower readings due to the nature of their operation and materials. Recommendations for Use: Bob encourages extensive use of the tester on various transformers and inductors to develop a practical understanding of typical readings, as these can vary widely across different types and models of inductive components.
BLUE K7214+ ESR meter circuit same as K7254, EVB & Dick Smith MKII ESR Meter
NEW Blue K7214+ ESR Meter classic circuit same as Blue ESR Meter, EVB ESR Meter, Dick Smith MKII ESR and Low Ohms Meter with translucent blue case Please note: The picture is just to show the measurement result. The package does not include any batteries. This K7214+ ESR METER is based on the famous BLUE ESR METER classic circuit, using a new low-power MCU to replace the original ZILOG Z86E0412 microprocessor, a new design of firmware, in addition to the original BLUE ESR METER all the functions, you can test hook zeroing data saved to the microcontroller EEPROM, so you do not have to do zeroing operations every time you turn on the computer. You can set the automatic shutdown time of the meter, and the shutdown can indicate the battery voltage, the battery life is much higher than the model using ZILOG Z86E0412 microprocessor. Red ultra-high brightness LED display, measurement results can be displayed more clearly. Note:Blue ESR Meter has been popular since 2007. This is the latest Bob Parker design and successor to the famous Dick Smith MKII ESR and Low Ohms Meter. This handy and cost-effective meter, can measure capacitor equivalent series resistance (ESR) in the circuit. ESR is a very important quality and performance characteristic of capacitors greater than 1uF. This meter makes quality measurements which are usually not possible to check with capacitance meters. For more ESR meter knowledge, you can visit: bobparker.net.au/esr_meter/esrmeter.htm ESR Meter (Mark II) Features * Tests electrolytics in-circuit <100mV test voltage, & test leads are non-polarized * Auto-ranging to cover 0.01 – 99 ohms * Update speed: 4 readings/second * Single push button to easily control all functions * Test lead resistance zeroing compensation is stored in non-volatile memory, You don't have to zero the test leads after every turn on * Automatic power off time adjustable from 1 to 9 minutes (0: clear auto power off) * Low battery voltage warning ('b' flashes on right-hand digit),Displays battery voltage for a few moments before shutdown * Big, easy to read 0.5 inch (13mm) high brightness LED displays * Table of typical good capacitor ESR readings on the front panel
New Touch Screen Glass Fit for HIOKI 3522-50 LCR HiTESTER One-Year Warranty
Dear Friend, Thank you very much for your visit us ! Your satisfaction is our top priority ! for thus we’ll try you a cheerful buying experience here Give us a chance to do so please, appreciated very much! Your Attention before you bid the order: Fast shipping ( FedEx Express or DHL EXPRESS) are available for option if you prefer to DHL / Fedex Shipping, please select “expedited shipping” to pay that will come with extra charge, extra charge details please refer to what the shipping condition shows Due to different countries come with different rate to the custom-duties / import tax, our listing price and or shipping charge do NOT considered on the fees related to your local custom duties and or import tax that may incur in your country, when incur, it would be at your own responsibility to take care of For us we are always trying to achieve a bit more than what you are expecting for, In worse case your buying experience failed to meet what you have expected for, we offer ONE-YEAR WARRANTY for money refund and or new replacement; for anything you think it is failure from us, please contact with us, here we are always standby to try you a 100% satisfied buying, hope you’ll enjoy an excellent buying experience here General Information: 1PC New Touch Screen Glass Application : HIOKI 3522-50 LCR HiTESTER Warranty : 1 Year
New Touch Screen Glass Fit for HIOKI 3532-50 LCR HiTESTER One-Year Warranty
Dear Friend, Thank you very much for your visit us ! Your satisfaction is our top priority ! for thus we’ll try you a cheerful buying experience here Give us a chance to do so please, appreciated very much! Your Attention before you bid the order: Fast shipping ( FedEx Express or DHL EXPRESS) are available for option if you prefer to DHL / Fedex Shipping, please select “expedited shipping” to pay that will come with extra charge, extra charge details please refer to what the shipping condition shows Due to different countries come with different rate to the custom-duties / import tax, our listing price and or shipping charge do NOT considered on the fees related to your local custom duties and or import tax that may incur in your country, when incur, it would be at your own responsibility to take care of For us we are always trying to achieve a bit more than what you are expecting for, In worse case your buying experience failed to meet what you have expected for, we offer ONE-YEAR WARRANTY for money refund and or new replacement; for anything you think it is failure from us, please contact with us, here we are always standby to try you a 100% satisfied buying, hope you’ll enjoy an excellent buying experience here General Information: 1PC New Touch Screen Glass Application : HIOKI 3532-50 LCR HiTESTER Warranty : 1 Year
BRAND NEW LEICA TS09 R400 3″ TOTAL STATION FOR SURVEYING ONE YEAR WARRANTY
Leica FlexLine TS09 As flexible as You are For Basic to Advanced Users with the Need for Flexibility and Performance. To ensure that you stay one-step-ahead, Leica Geosystems has developed a new generation of Total Stations using latest technology, the Leica FlexLine. For the first time, hardware and software options can be simply selected so that the FlexLine Total Station exactly meets your requirements. The Choice is Yours – Combine the Features You need Data storage/Communication Increase your flexibility in data handling by – Bluetooth® wireless technology – removable USB stick – Mini-USB port – RS232 port Five angle accuracy available from 1″ – 7″ FlexField & FlexOffice Software FlexField on-board software and FlexOffice Software offer a broad range of functionality to cover all tasks. Benefit from simplicity and functionality in one solution. Alpha-Numerical Keyboard for rapid entry of numbers, letters and special characters. Electronic Distance Measurement (EDM) A selection of EDM options delivers exactly what you need: Prism: 3500 m, 1 mm accuracy Non-Prism: 30 m FlexPoint >400 m PinPoint–Power >1000 m PinPoint–Ultra Arctic If your work exposes you to extremely cold conditions down to -35° C (-22° F) this isn’t a problem. All FlexLine Total Stations are available as Arctic versions. Customer Care Packages To ensure that you have complete peace-of-mind, a comprehensive range of Customer Care Packages are available with FlexLine Total Stations. Leica FlexLine TS09 – Performance guaranteed A true performance orientated Total Station that continually delivers regardless how demanding the task may be. Designed especially for mid-to-high accuracy applications. Equipped with all FlexLine features from removable USB memory, Bluetooth® wireless technology, Emitting Guide Light to a complete range of application software, your TS09 guarantees maximum performance. Leica FlexLine Total Stations provide complete flexibility in configuring each Total Station. The following table shows the standard (√) and optional (O) features for each Total Station within the FlexLine family. Leica TS02 Leica TS06 Leica TS09 High accuracy instrument 1” angular accuracy – – √ 1 mm + 1.5 ppm distance measurement accuracy – – √ Distance measurement Prism, 3500 m range √ √ √ Non-Prism: 30 m FlexPoint incl. Laserpointer O √ √ Non-Prism: >400 m PinPoint – Power O O O Non-Prism: >1000 m PinPoint – Ultra O O O Data storage/Communication Internal memory √ √ √ Enhanced Internal memory – √ √ Removable USB memory stick, mini-USB port O O √ Integrated Bluetooth® wireless technology O O √ Keyboard Alpha-numerical O √ √ Second Keyboard O O √ 1-functionTrigger key √ √ √ 2-functionTrigger key – √ √ FlexField Onboard Software Orientation & Surveying, Stake Out, Resection, Height Transfer, Construction, Area (Plan & Surface), Volume calculation, Tie Distance (MLM), Remote Height, Hidden Point, Offset, Reference Line √ √ √ Reference Arc, Reference Plane, COGO, Road 2D O √ √ Roadworks 3D, TraversePRO – O √ Emitting Guide Light (EGL) Emitting Guide Light (EGL) for stake out O O √ Arctic Version Temperature -35° C (operation) O O O Leica FlexLine TS09 – Ideal Today, perfect Tomorrow The ideal Total Station for standard measurement tasks. Designed especially for mid-to-low accuracy applications. It comes complete with a standard set of application software that guides you through your daily work. For more convenience add Bluetooth® wireless technology to connect any data collector and use the Software which best suits your tasks and requirements. For Basic to Advanced Users with the Need for Flexibility and Performance. To ensure that you stay one-step-ahead, Leica Geosystems has developed a new generation of Total Stations using latest technology, the Leica FlexLine. For the first time, hardware and software options can be simply selected so that the FlexLine Total Station exactly meets your requirements.
PENN A25AN-1 WARM AIR LIMIT CONTROL ADJUSTABLE TEMP MANUAL RESET
Bin 27 This item has been removed from a working facility . Please expect some minor scratches, residue from use, oxidation, other cosmetic imperfections and normal wear and tear from everyday use. Please see pictures carefully for further visual details as they are part of the description. We cannot possibly describe every detail of this item and what is in the pictures is included in the sale. Please do not assume something is or is not there. If you do not see it in the pictures then it most likely doesn’t come way as with the item. Please feel free to ask question before purchase if you are unclear of a certain detail. We can provide additional pictures though the eBay messenger upon request. This item is to be used for its intended purpose. We did our diligence cleaning this item, but this item can still use a good wipe upon receipt. We only have the ability to ship to the lower 48 states. However you are welcome to provide your own shipping label if you would like to use your own account. We can send our email address, dimensions, weight and shipping address after payment is processed via eBay policy. We do however charge a $5 packing material fee if you do decide to provide your own label.
Regulator Power Supply AC-DC 0-30VDC Current Limit 1-2A Unassembled Kit
Regulator Power Supply AC-DC 0-30VDC Current Limit 1-2A Unassembled Kit This listing is Unassembled kit. All components are not assembled into the board and already tested. Technical information- You can adjust the output voltage 0-30V and current limit adjustment 1-2A- It requires 24-27VAC from AC-AC transformer, recommend at least 2A transformer.- This circuit use 4700uF/50V which can supply stable voltage to an application. – PCB size : 5.82cm ( W ) x 9.0cm ( L ) and ( Hight = 4.16cm including Big Capacitor ) – Comes with the schematic diagram. – Please note that we sale only board as shown in the photo–>>No transformer / Cable / DC or AC plug /JackShipment – All products are shipped by Thailand Post Service within 2-3 days by airmail after payment is clear. Except for the weekend, shipping will be postponed to Monday. We ship worldwide by Economy Airmail ( 3-5 weeks ) as a gift for the customs declaration. Please let us know if you prefer expedited shipping, extra shipping cost is required. – We are not responsible for any custom duty or import tax. Return Policy – We offer 30 days’ money back. You can purchase with more confidence. – Full refund if within 45 days buyer doesn’t receive our product. After you receive our products, If it is a defective or missing part, please take the photo as evidence and contact us within 30 days. You can return the product for replacement or refund. But shipping costs and custom tax are not refundable. Feedback and Support – We leave the positive feedback after receiving the payment. – Please contact us before leaving negative feedback or open the case. We will do our best to resolve any problems. – We always support our customers after-sales. – If you have any problems or any questions with our products, please feel free to contact us. We have an engineer to support you. Don’t worry if you are new to electronics. – Due to timing differences, we may delay to response but it should be within 24 hours. Our working hours are from (GMT+7:00) 08:00 AM to 20:00 PM. CH-025 Curve Tracer Adapter CH-026 Door/Window Open Alarm 10-240 seconds CH-012 BJT Transistor Curve Tracer Plus AC/DC with Regulator Power Dual Supply “Double Pack” CH-003 HHO High-Frequency PWM DC Motor Speed Controller 30A max Plus Soft Start 12-30VD CH-029 Pre Microphone XLR upgrade board for MIC capsule XLR Mic CH-010 Car Ceiling Light Dimmer Delay Off Timer 7-14s for Lamp / LED Temperature and Voltage Data Monitor via Internet LAN CH-024 Function Generator Sine Triangle Square Wave 0.5Hz-100kHz Unassembled Kit for Lab CH-017 Delay On Timer 1-3 seconds for Car Amplifier System 12V / 5A or Car Light CH-018 Cycling or Repeat Timer 1.5-180 minutes ON-OFF 12VDC/30A Heavy Duty 110V/240VAC
Search coil Detech Ultra sensitive 18 x 4″ DD ARROW for metal detectors
Detech Ultra sensitive 18 x 4″ DD ARROWPlease choose your metal detector model! It works only on the specific metal detector, not suitable for all brands and models!!! Options: Garrett AT Pro/ AT Gold; Minelab Explorer/E-Trac; Fisher F75;Teknetics T2; White’s DFX / MXT / M6 This is the newest search coil model made by the Bulgarian manufacturer Detech. This search coil is unique due its size 18×4″ (46x10cm) and is without an analogue on the market. The Detech 18×4″ search coil is specially designed for heavily polluted areas, covering maximum area. Extremely good for beach hunting, nugget hunting or where big areas are needed to be covered fast. The Detech Arrow search coil is extremely sensitive,in the same time with stable operation, light for its size and of course 100% waterproof. The materials are maximum UV protection. 2 years warranty. This offer is suitable for non European Union countries. If you are located inside EU, please check my other offer in our store: “Detech 18×4″ Arrow Suchspulen für Metalldetektor – für EU käufer” Shipping to USA last 15-20 working daysShipping to UK last 14 working daysShipping to countries in EU -5-7 working days
NEW Induction Clamp 5″ 130mm for Radiodetection TX-1 TX-5 TX-10 Transmitter
UCG stock number: R15 Ready to Ship NEW Induction Clamp 5″ 130mm for Radiodetection TX-1 TX-5 TX-10 Transmitter Contact us to check pricing and availability for expedited shipping. Description This is a brand new item, never been used. Please see pictures for more details. (What you see in the pictures is what you get)
2PCS Car Alligator Clips Crocodile Clip Battery Test Clamps 100A Red Black
Features ★The spring made of high-quality metal can withstand greater pressure, and the rubber wrapped on the alligator clip can help prevent the risk of electric shock when operating electronic products, and it is safer to use. ★Battery clips with strong springs can be firmly connected to the car battery and voltage tester. The tine design of the battery clamps head can increase the stability of the clamping. Specifications Product Name: Insulated Alligator Clips Material: Plastic, Copper Plated Metal Rated Current : 100A Overall Size(L*W*H): 3.54 inch x 2.87 inch x 0.79 inch Max Jaw Open Width: 1 inch Color: Red, Black Package Includes 2pcs Standard Hex Dogging Key On Nov 8, 2023 at 18:45:16 PST, seller added the following information: