Description Microtest Impulse Winding Tester 7750-1S 10V~1200V MICROTEST 7750-1S is a product in the 7550 Series. The 7750-1S is an advanced Impulse Winding Tester with a faster colour display screen. It provides pulse voltage outputs of 10V~1200V and utilizes high-speed sampling technology at 200MHz/9 bits. It offers various comparison modes such as total area, area difference, corona count, jitter count, second-order differentiation, and waveform comparison. With a testing speed of up to 10 times per second, it is ideal for high-speed production lines. For testing small components, the optional 7750-1S tester comes with the FX-IM0001 four-wire SMD component testing fixture. It features voltage compensation to minimize voltage errors caused by wiring and equivalent inductance, ensuring accurate quality control for products with small inductance. Features Lowest Inductance (≥0.1μH) High voltage calibration programmable impulse voltage 200MHz/9bit High Impulse Test Sampling Rate Total Area Comparison Differential Area Comparison Corona Comparison LAPLACIAN Comparison Voltage Compensation Function The meaning of the Corona, Flutter and Laplacian comparison: Corona comparison counts corona occurrence to detect discharge. Flutter comparison measures the total area of high-frequency waveform fluctuations to quantify waveform tremors. Laplacian comparison sums the second derivative of the waveform (the rate of change of the voltage change rate) to determine how much the high-frequency wave is fluttering. Is the HV output grounded? Yes, the negative side of the output is grounded. About the setup: The goal of all comparison modes is to measure discharge in different ways. There is no shared standard. The settings are usually found by trial and error. What I would recommend is to go through the following process: Finish the initial waveform learning and standard setting. Test at least 10-50 of the products that is on the production line and check the total yield of the batch. If the yield is too low, the standard is too strict. Lower the test voltage or the pass limit. If the yield is too high and you want stricter control, consider raising the pass limit or increasing the test level. Product Images By calculating and comparing the deference of area between golden sample and DUT. Show by percentage Analysis the power loss by this data." src="https://telonic.co.uk/jg/wp-content/uploads/2024/08/Screenshot-2024-08-30-121730.png"/> <div class="SCcarousel_img"> Total Area comparison <span>Learn more...</span> </div> </a> </div> </div> <div class="item darkCyan"> <div class="link-list" id="grouped-image-list"> <a title="Differential area comparison" class="fancybox" href="https://telonic.co.uk/jg/wp-content/uploads/2024/08/Screenshot-2024-08-30-121742.png" rel="gallery1"><img loading="lazy" title="Differential area comparison" alt="Add up the difference between normal wave and DUT wave call “ Area differential”. Total Area comparison Learn more... When layer short happened, the inductance reduce(similar the transformer). The wave phase change and the area differential also change. This will show “fail” on the instrument. However, the parameter might cause deviation because of the deviation of inductance, resonance phase shift. (Silicon steel product such as motor and traditional transformer is not suitable) By calculating and comparing the deference of area between golden sample and DUT. To determine the degree of waveform overlap. Compare the inductance by this." src="https://telonic.co.uk/jg/wp-content/uploads/2024/08/Screenshot-2024-08-30-121742.png"/> <div class="SCcarousel_img"> Differential area comparison <span>Learn more...</span> </div> </a> </div> </div> <div class="item darkCyan"> <div class="link-list" id="grouped-image-list"> <a title="Corona comparison" class="fancybox" href="https://telonic.co.uk/jg/wp-content/uploads/2024/08/Screenshot-2024-08-30-121749.png" rel="gallery1"><img loading="lazy" title="Corona comparison" alt="In pulse test, the insulation defect will cause discharge and create corona. This function is able to count the times that corona happened base on the degree of deviation. Differential area comparison Learn more... Detect the discharge phenomenon on the coil." src="https://telonic.co.uk/jg/wp-content/uploads/2024/08/Screenshot-2024-08-30-121749.png"/> <div class="SCcarousel_img"> Corona comparison <span>Learn more...</span> </div> </a> </div> </div> <div class="item darkCyan"> <div class="link-list" id="grouped-image-list"> <a title="COMP Comparison" class="fancybox" href="https://telonic.co.uk/jg/wp-content/uploads/2024/08/Screenshot-2024-08-30-121759.png" rel="gallery1"><img loading="lazy" title="COMP Comparison" alt="By setting an allowable waveform range for the standard wave, this feature can simultaneously determine the Corona comparison Learn more... COMP Comparison Learn more... LAPLACIAN Comparison Learn more... Product Videos 7750 Impulse Winding TesterMicrotest 7750 Impulse Winding Tester Operation DemoMICROTEST | 7750 PC Link Software DemoThe correct way to detect short circuits between coil layers. Impulse Winding Tester ｜7750 VS 7703
