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A test probe, test prod, scope probe or test lead is a physical device used to connect electronic test equipment to a device under test or DUT. They range from very simple, rugged devices to complex probes that are sophisticated, expensive, and fragile. A current probe generates a voltage proportional to a current in the circuit being measured; as the proportionality constant is known, instruments that respond to voltage can be calibrated to indicate current. Current probes can be used both by measuring instruments and oscilloscopes. To measure or display the modulating waveform of a modulated high-frequency signal, for example: an amplitude-modulated radio signal-a probe fitted with a simple diode de-modulator can be used. The probe will output the modulating waveform without the high-frequency carrier.

In-circuit test or ICT is an example of white box testing where an electrical probe tests a populated printed circuit board "PCB", checking for shorts, opens, resistance, capacitance, and other basic quantities which will show whether the assembly was correctly fabricated. It may be performed with a bed of nails type test fixture and specialist test equipment, or with a fixture-less in-circuit test setup.

A function generator is usually a piece of electronic test equipment or software used to generate different types of electrical wave forms over a wide range of frequencies. Some of the most common wave forms produced by the function generator are the sine, square, triangular and saw-tooth shapes. These wave forms can be either repetitive or single-shot which requires an internal or external trigger source. Integrated circuits used to generate wave forms may also be described as function generator ICs. Although function generators cover both audio and RF frequencies, they are usually not suitable for applications that need low distortion or stable frequency signals. When those traits are required, other signal generators would be more appropriate. Some function generators can be phase-locked to an external signal source which may be a frequency reference or another function generator. Function generators are used in the development, test and repair of electronic equipment. For example, they may be used as a signal source to test amplifiers or to introduce an error signal into a control loop.

Square D

Square D QOU260 60A 120 240V 50 60HZ 2 Pole Circuit Breaker DIN MOUNT

Square D QOU260 60A 120 240V 50 60HZ 2 Pole Circuit Breaker DIN MOUNT

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QOU260 Square

QOU260 Square D Circuit Breaker 60 Amp 2 Pole 120 240V

QOU260 Square D Circuit Breaker 60 Amp 2 Pole 120 240V

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QOU120 Square

QOU120 Square D Feed Through Circuit Breaker 1p 20a 240V 2 YEAR WARRANTY

QOU120 Square D Feed Through Circuit Breaker 1p 20a 240V 2 YEAR WARRANTY

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SQUARE D

SQUARE D Circuit Breaker QOU370 70A 240V 3P 10K New in Open Box

SQUARE D Circuit Breaker QOU370 70A 240V 3P 10K New in Open Box

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Square D

Square D Circuit Breaker 20 Amp Series 3 QOU120 HM37 QOU120HM

Square D Circuit Breaker 20 Amp Series 3 QOU120 HM37 QOU120HM

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Square D

Square D QOU260 2p 60a 120 240v Circuit Breaker NEW

Square D QOU260 2p 60a 120 240v Circuit Breaker NEW

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NEW Square

NEW Square D QOU250 2p 25A 120 240v Circuit Breaker

NEW Square D QOU250 2p 25A 120 240v Circuit Breaker

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Square D

Square D QOU240 40 AMP 2 POLE 240 VOLT SERIES 3 Circuit Breaker NEW

Square D QOU240 40 AMP 2 POLE 240 VOLT SERIES 3 Circuit Breaker NEW

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QOU230 SQUARE

QOU230 SQUARE D 2POLE 30AMP 240V CIRCUIT BREAKER NEW IN BOX

QOU230 SQUARE D 2POLE 30AMP 240V CIRCUIT BREAKER NEW IN BOX

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Square D

Square D 2 Pole 50Amp QOU250 Feed Thru Breaker NEW Free Shipping

Square D 2 Pole 50Amp QOU250 Feed Thru Breaker NEW Free Shipping

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QOU260 Square

QOU260 Square D Circuit Breaker 60 Amp 2 Pole 120 240V

QOU260 Square D Circuit Breaker 60 Amp 2 Pole 120 240V

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Square D

Square D QOU215 Circuit Breaker DIN rail Surface Mount

Square D QOU215 Circuit Breaker DIN rail Surface Mount

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QOU150 Square

QOU150 Square D 1Pole 50Amp 120V Circuit Breaker NEW

QOU150 Square D 1Pole 50Amp 120V Circuit Breaker NEW

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QOU3100 NEW

QOU3100 NEW IN BOX

QOU3100 NEW IN BOX

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SQUARE D

SQUARE D QOU215 2 POLE 15 AMP 120 240V TYPE QOU CIRCUIT BREAKER NEW

SQUARE D QOU215 2 POLE 15 AMP 120 240V TYPE QOU CIRCUIT BREAKER NEW

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1 SQUARE

1 SQUARE D QOU QOU115 CIRCUIT BREAKER 15A 15 AMP 1P 1 POLE 120V

1 SQUARE D QOU QOU115 CIRCUIT BREAKER 15A 15 AMP 1P 1 POLE 120V

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