Products related to Ohm:
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Insulation Resistance Meter Digital Megger Ohmmeter Handheld Insulation Tester 1M Ohm -20G Ohm red
The Digital Insulation Resistance Tester has safe configuration and improved electro-circuit. It is one new item with more functions, higher precision, and easier operation. It s also one quake-proof, dust-proof and damp-proof tester for outdoor use. Features: Capability: Can do the test at several test voltages: 100V, 250V, 500V, 1000V; voltage below AC750V can be tested; with resistance measurement ranging from 1 M Ohm to 20 G Ohm . Practical Function: Auto switch the range when measuring resistance; data hold feature; low battery reminder and high voltage indicator. Large LCD Display: Equipped with a 3 1/2 digits big LCD display with max value 1999, easy to read. Safe to Use: Rugged housing is dust-proof and damp-proof; strong load capacity with output short-circuit current about 1.0mA; protective circuit prevents damage from voltage shock. User-Friendly: Turn the rotary switch to select voltage; comes with test leads, alligator clips, and a kickstand on the back. Wide Application: This tester can be applied in all kinds of electric equipment and insulation materials such as transformer, electromotor, cable, switch, appliance, etc. Specifications: Material: ABS Color: Red Size of LCD: 68*44mm / 2.67*1.73in Power Supply: 6 * 1.5V AA battery (Not Included) Working Temperature: 0~40 celsius Relative Humidity: less than 80percent Safety Level: CAT-II 1000V and CAT-III 600V Item Size: 205 * 90 * 55mm / 8.07 * 3.54 * 2.16in Item Weight: 450g / 15.87oz Package Weight: 774g / 27.3oz Package Size: 23.2 * 16.2 * 7cm / 9.13 * 6.37 * 2.75in Technique Index: Test rated voltage: 100V, 250V, 500V, 1000V Output voltage: 90percent ~110percent of the test rated voltage Resistance? ? Measurement range: 1 M Ohm ~ 20 G Ohm ? Resolution: 0.01 M Ohm ? Accuracy: ? 1 M Ohm ~ 200 M Ohm : +/-(3percent of the reading + 5 significant digits) ? 200 M Ohm ~ 10 G Ohm : +/-(5percent of the reading + 5 significant digits) ? 10 G Ohm ~ 20 G Ohm : +/-(10percent of the reading + 5 significant digits) AC voltage ? Measurement range: 1V ~ 750V ? Resolution: 1V ? Accuracy: +/-(2percent of the reading + 5 significant digits) Frequency Response: 40Hz ~ 400Hz Packing List: 1 * Insulation Tester 1 * Storage Bag 1 * Test Leads(pair) 1 * Probe Clips(pair) 1 * User Manual (English)
Price: 69.91 € | Shipping*: 0.0 € -
Insulation Resistance Meter Digital Megger Ohmmeter Handheld Insulation Tester 1M Ohm -20G Ohm red
The Digital Insulation Resistance Tester has safe configuration and improved electro-circuit. It is one new item with more functions, higher precision, and easier operation. It s also one quake-proof, dust-proof and damp-proof tester for outdoor use. Features: Capability: Can do the test at several test voltages: 100V, 250V, 500V, 1000V; voltage below AC750V can be tested; with resistance measurement ranging from 1 M Ohm to 20 G Ohm . Practical Function: Auto switch the range when measuring resistance; data hold feature; low battery reminder and high voltage indicator. Large LCD Display: Equipped with a 3 1/2 digits big LCD display with max value 1999, easy to read. Safe to Use: Rugged housing is dust-proof and damp-proof; strong load capacity with output short-circuit current about 1.0mA; protective circuit prevents damage from voltage shock. User-Friendly: Turn the rotary switch to select voltage; comes with test leads, alligator clips, and a kickstand on the back. Wide Application: This tester can be applied in all kinds of electric equipment and insulation materials such as transformer, electromotor, cable, switch, appliance, etc. Specifications: Material: ABS Color: Red Size of LCD: 68*44mm / 2.67*1.73in Power Supply: 6 * 1.5V AA battery (Not Included) Working Temperature: 0~40 celsius Relative Humidity: less than 80percent Safety Level: CAT-II 1000V and CAT-III 600V Item Size: 205 * 90 * 55mm / 8.07 * 3.54 * 2.16in Item Weight: 450g / 15.87oz Package Weight: 774g / 27.3oz Package Size: 23.2 * 16.2 * 7cm / 9.13 * 6.37 * 2.75in Technique Index: Test rated voltage: 100V, 250V, 500V, 1000V Output voltage: 90percent ~110percent of the test rated voltage Resistance? ? Measurement range: 1 M Ohm ~ 20 G Ohm ? Resolution: 0.01 M Ohm ? Accuracy: ? 1 M Ohm ~ 200 M Ohm : +/-(3percent of the reading + 5 significant digits) ? 200 M Ohm ~ 10 G Ohm : +/-(5percent of the reading + 5 significant digits) ? 10 G Ohm ~ 20 G Ohm : +/-(10percent of the reading + 5 significant digits) AC voltage ? Measurement range: 1V ~ 750V ? Resolution: 1V ? Accuracy: +/-(2percent of the reading + 5 significant digits) Frequency Response: 40Hz ~ 400Hz Packing List: 1 * Insulation Tester 1 * Storage Bag 1 * Test Leads(pair) 1 * Probe Clips(pair) 1 * User Manual (English)
Price: 53.99 £ | Shipping*: 0.0 £ -
Insulation Resistance Meter Digital Megger Ohmmeter Handheld Insulation Tester 1M Ohm -20G Ohm red
The Digital Insulation Resistance Tester has safe configuration and improved electro-circuit. It is one new item with more functions, higher precision, and easier operation. It s also one quake-proof, dust-proof and damp-proof tester for outdoor use. Features: Capability: Can do the test at several test voltages: 100V, 250V, 500V, 1000V; voltage below AC750V can be tested; with resistance measurement ranging from 1 M Ohm to 20 G Ohm . Practical Function: Auto switch the range when measuring resistance; data hold feature; low battery reminder and high voltage indicator. Large LCD Display: Equipped with a 3 1/2 digits big LCD display with max value 1999, easy to read. Safe to Use: Rugged housing is dust-proof and damp-proof; strong load capacity with output short-circuit current about 1.0mA; protective circuit prevents damage from voltage shock. User-Friendly: Turn the rotary switch to select voltage; comes with test leads, alligator clips, and a kickstand on the back. Wide Application: This tester can be applied in all kinds of electric equipment and insulation materials such as transformer, electromotor, cable, switch, appliance, etc. Specifications: Material: ABS Color: Red Size of LCD: 68*44mm / 2.67*1.73in Power Supply: 6 * 1.5V AA battery (Not Included) Working Temperature: 0~40 celsius Relative Humidity: less than 80percent Safety Level: CAT-II 1000V and CAT-III 600V Item Size: 205 * 90 * 55mm / 8.07 * 3.54 * 2.16in Item Weight: 450g / 15.87oz Package Weight: 774g / 27.3oz Package Size: 23.2 * 16.2 * 7cm / 9.13 * 6.37 * 2.75in Technique Index: Test rated voltage: 100V, 250V, 500V, 1000V Output voltage: 90percent ~110percent of the test rated voltage Resistance? ? Measurement range: 1 M Ohm ~ 20 G Ohm ? Resolution: 0.01 M Ohm ? Accuracy: ? 1 M Ohm ~ 200 M Ohm : +/-(3percent of the reading + 5 significant digits) ? 200 M Ohm ~ 10 G Ohm : +/-(5percent of the reading + 5 significant digits) ? 10 G Ohm ~ 20 G Ohm : +/-(10percent of the reading + 5 significant digits) AC voltage ? Measurement range: 1V ~ 750V ? Resolution: 1V ? Accuracy: +/-(2percent of the reading + 5 significant digits) Frequency Response: 40Hz ~ 400Hz Packing List: 1 * Insulation Tester 1 * Storage Bag 1 * Test Leads(pair) 1 * Probe Clips(pair) 1 * User Manual (English)
Price: 68.99 € | Shipping*: 0.0 € -
Innovation Competency Model : Shaping Faculty Academic Innovation Development in China's Higher Education
Contributing to the discussion over China's higher education development, this book takes a theoretical approach to address the topic of university academics' innovation by introducing an academic innovation competency model, exploring the contexts, concepts and practices.The innovation competency model comprises three interdependent dimensions, including the academic internal drive vitality, the academic synthesizing refined ability and the academic suspected and introspective ability.By enriching the theory of professional development of university teachers, these three dimensions will help advance the reform of college personnel systems and ultimately improve the quality of China's higher education. The book will be valuable to researchers, students and stakeholders hoping to learn about education reform in China, or to those who study higher education management and comparative education.
Price: 38.99 £ | Shipping*: 0.00 £
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On which other field did Ohm conduct research?
In addition to his work on electrical circuits and Ohm's Law, Ohm also conducted research in the field of acoustics. He studied the relationship between sound waves and their frequencies, contributing to the understanding of how sound travels through different mediums. Ohm's research in acoustics helped further the scientific knowledge of sound propagation and resonance.
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On what other field did Ohm conduct research?
In addition to his work on electrical circuits and Ohm's Law, Ohm also conducted research in the field of acoustics. He studied the relationship between sound intensity and perception, and made contributions to our understanding of how sound waves propagate through different mediums. Ohm's work in acoustics helped lay the foundation for the study of sound and its properties.
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Instead of 4 ohm speakers, 8 ohm?
Using 8 ohm speakers instead of 4 ohm speakers can have some advantages. The higher impedance of 8 ohm speakers can result in better sound quality and clarity, as they are less likely to strain the amplifier. Additionally, 8 ohm speakers are more common and widely available, making it easier to find compatible equipment. However, it's important to ensure that the amplifier can handle the higher impedance to prevent any damage.
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How does a 2-ohm radio work with 4-ohm speakers?
A 2-ohm radio connected to 4-ohm speakers can potentially cause issues. The mismatch in impedance can lead to distortion, overheating, and potentially damage the radio or speakers. It is recommended to match the impedance of the radio and speakers for optimal performance and to prevent any damage. If using a 2-ohm radio with 4-ohm speakers, it is advisable to use a speaker impedance matching device to ensure compatibility.
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52mm Digital Voltmeter Voltmeter 0-190 Ohm 240-33 Ohm Universal Volt Voltage Gauge Red Backlight
52mm Digital Voltmeter Voltmeter 0-190 Ohm 240-33 Ohm Universal Volt Voltage Gauge Red Backlight
Price: 11.49 € | Shipping*: 0 € -
ANENG MH10 Digital Insulation Resistance Tester 0.1M Ohm -2000M Ohm LCD Backlit Megohmmeter Output Voltage orange
This is a multifunction instrument that can measure insulation resistance and AC voltage. It has fashionable appearance and stable performance, can be used for measuring electrical machinery, cable, electromechanical equipment, telecom equipment, electric power facilities and other insulation resistance. Features: This instrument applies automatic voltage release function, with high stability and reliability, with maximum 1999 counts, 0.1M Ohm -2000M Ohm insulation resistance measuring. It is suitable for measuring the insulation resistance of various electrical equipments and insulating materials such as transformers, motors, cables, switches, electrical appliances, etc. It is suitable for maintenance, repair, test and etc.. Rated output voltage is variable, easy to switch between 100V/ 250V/ 500V/ 1000V through the rotary knob. And it can measure AC voltage with the range of 1-750V. High voltage indication to remind you of safe operation; low battery indication to remind you of replacing batteries in time. The instrument has fashionable appearance and stable performance. With large digital LCD backlit display, easy to read. Battery powered or external DC 12V power adapter powered, satisfying different needs. Automatic shutdown after about 22min idle time to save power. Drop resistant silicone protective sleeve for protecting the tester from damage. Comes with a zipper storage bag for easy storage and portability. Note: 1. Please read the user manual carefully before use. 2. Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding. Specifications: Color: Orange/ Blue (Optional) Material: ABS + Silicone Screen: LCD Backlit Screen Output Voltage: 100V/ 250V/ 500V/ 1000V Insulation Resistance Measurement: 0.1M Ohm -2000M Ohm Test Current: 1mA (250V/ 500V/ 1000V) Short-circuit Current: less than 1.8mA AC Voltage Measurement: 1~750V AC Voltage Frequency: 40-70Hz Jack Position: L, E Power Supply: 6 * 1.5V AA Battery (Not included) or External DC 12V Auto Shutdown: about 22min Maximum Display: 1999 Item Size: 170 * 129.1 * 63.4mm / 6.69 * 5.08 * 2.49in Item Weight (without battery): 543g / 1.20lbs Package Size: 21 * 17.8 * 7.8cm / 8.27 * 7.01 * 3.07in Package Weight: 860g / 1.90lbs Package List: 1 * Insulation Resistance Tester 2 * Test Pen 2 * Alligator Clip 1 * Storage Bag 1 * User Manual (English)
Price: 51.09 £ | Shipping*: 0.0 £ -
ANENG MH10 Digital Insulation Resistance Tester 0.1M Ohm -2000M Ohm LCD Backlit Megohmmeter Output Voltage orange
This is a multifunction instrument that can measure insulation resistance and AC voltage. It has fashionable appearance and stable performance, can be used for measuring electrical machinery, cable, electromechanical equipment, telecom equipment, electric power facilities and other insulation resistance. Features: This instrument applies automatic voltage release function, with high stability and reliability, with maximum 1999 counts, 0.1M Ohm -2000M Ohm insulation resistance measuring. It is suitable for measuring the insulation resistance of various electrical equipments and insulating materials such as transformers, motors, cables, switches, electrical appliances, etc. It is suitable for maintenance, repair, test and etc.. Rated output voltage is variable, easy to switch between 100V/ 250V/ 500V/ 1000V through the rotary knob. And it can measure AC voltage with the range of 1-750V. High voltage indication to remind you of safe operation; low battery indication to remind you of replacing batteries in time. The instrument has fashionable appearance and stable performance. With large digital LCD backlit display, easy to read. Battery powered or external DC 12V power adapter powered, satisfying different needs. Automatic shutdown after about 22min idle time to save power. Drop resistant silicone protective sleeve for protecting the tester from damage. Comes with a zipper storage bag for easy storage and portability. Note: 1. Please read the user manual carefully before use. 2. Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding. Specifications: Color: Orange/ Blue (Optional) Material: ABS + Silicone Screen: LCD Backlit Screen Output Voltage: 100V/ 250V/ 500V/ 1000V Insulation Resistance Measurement: 0.1M Ohm -2000M Ohm Test Current: 1mA (250V/ 500V/ 1000V) Short-circuit Current: less than 1.8mA AC Voltage Measurement: 1~750V AC Voltage Frequency: 40-70Hz Jack Position: L, E Power Supply: 6 * 1.5V AA Battery (Not included) or External DC 12V Auto Shutdown: about 22min Maximum Display: 1999 Item Size: 170 * 129.1 * 63.4mm / 6.69 * 5.08 * 2.49in Item Weight (without battery): 543g / 1.20lbs Package Size: 21 * 17.8 * 7.8cm / 8.27 * 7.01 * 3.07in Package Weight: 860g / 1.90lbs Package List: 1 * Insulation Resistance Tester 2 * Test Pen 2 * Alligator Clip 1 * Storage Bag 1 * User Manual (English)
Price: 75.09 € | Shipping*: 0.0 € -
ANENG MH10 Digital Insulation Resistance Tester 0.1M Ohm -2000M Ohm LCD Backlit Megohmmeter Output Voltage orange
This is a multifunction instrument that can measure insulation resistance and AC voltage. It has fashionable appearance and stable performance, can be used for measuring electrical machinery, cable, electromechanical equipment, telecom equipment, electric power facilities and other insulation resistance. Features: This instrument applies automatic voltage release function, with high stability and reliability, with maximum 1999 counts, 0.1M Ohm -2000M Ohm insulation resistance measuring. It is suitable for measuring the insulation resistance of various electrical equipments and insulating materials such as transformers, motors, cables, switches, electrical appliances, etc. It is suitable for maintenance, repair, test and etc.. Rated output voltage is variable, easy to switch between 100V/ 250V/ 500V/ 1000V through the rotary knob. And it can measure AC voltage with the range of 1-750V. High voltage indication to remind you of safe operation; low battery indication to remind you of replacing batteries in time. The instrument has fashionable appearance and stable performance. With large digital LCD backlit display, easy to read. Battery powered or external DC 12V power adapter powered, satisfying different needs. Automatic shutdown after about 22min idle time to save power. Drop resistant silicone protective sleeve for protecting the tester from damage. Comes with a zipper storage bag for easy storage and portability. Note: 1. Please read the user manual carefully before use. 2. Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding. Specifications: Color: Orange/ Blue (Optional) Material: ABS + Silicone Screen: LCD Backlit Screen Output Voltage: 100V/ 250V/ 500V/ 1000V Insulation Resistance Measurement: 0.1M Ohm -2000M Ohm Test Current: 1mA (250V/ 500V/ 1000V) Short-circuit Current: less than 1.8mA AC Voltage Measurement: 1~750V AC Voltage Frequency: 40-70Hz Jack Position: L, E Power Supply: 6 * 1.5V AA Battery (Not included) or External DC 12V Auto Shutdown: about 22min Maximum Display: 1999 Item Size: 170 * 129.1 * 63.4mm / 6.69 * 5.08 * 2.49in Item Weight (without battery): 543g / 1.20lbs Package Size: 21 * 17.8 * 7.8cm / 8.27 * 7.01 * 3.07in Package Weight: 860g / 1.90lbs Package List: 1 * Insulation Resistance Tester 2 * Test Pen 2 * Alligator Clip 1 * Storage Bag 1 * User Manual (English)
Price: 74.99 € | Shipping*: 0.0 €
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What is the difference between 4 ohm and 6 ohm HiFi?
The main difference between 4 ohm and 6 ohm HiFi speakers is their impedance. The lower the impedance, the more power the speakers will draw from the amplifier. 4 ohm speakers will draw more power from the amplifier compared to 6 ohm speakers, which means they can potentially produce louder sound. However, not all amplifiers are designed to handle 4 ohm speakers, so it's important to check the compatibility of the speakers with the amplifier before making a purchase.
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Can you operate a 4-ohm subwoofer with a 1-ohm amplifier?
No, it is not recommended to operate a 4-ohm subwoofer with a 1-ohm amplifier. The impedance of the subwoofer should match or be higher than the minimum stable impedance rating of the amplifier to prevent damage to the equipment. Using a subwoofer with a higher impedance than the amplifier's minimum rating can cause the amplifier to overheat and potentially fail. It is important to match the impedance ratings of the subwoofer and amplifier for optimal performance and to avoid any potential damage.
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Can you bridge a 4-ohm subwoofer to a 4-ohm amplifier?
No, it is not recommended to bridge a 4-ohm subwoofer to a 4-ohm amplifier. Bridging involves combining two channels of an amplifier to increase power output, but in this case, the impedance of the subwoofer matches the amplifier. Bridging a 4-ohm subwoofer to a 4-ohm amplifier could potentially overload the amplifier and cause damage to the equipment. It is best to match the impedance of the subwoofer and amplifier for optimal performance and to prevent any potential damage.
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Can an 8-ohm speaker be connected to a 6-ohm amplifier?
Yes, an 8-ohm speaker can be connected to a 6-ohm amplifier. The speaker's impedance (ohms) should be equal to or higher than the amplifier's output impedance, but it is generally safe to connect a higher impedance speaker to a lower impedance amplifier. This mismatch may result in a slightly lower power output from the amplifier, but it should not cause any damage to either the speaker or the amplifier. However, it is not recommended to connect a lower impedance speaker to a higher impedance amplifier, as this can potentially damage the amplifier.
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