ESR V2.0 table resistance capacitance inductance test kit parts | Инструменты

ESR V2.0 table resistance capacitance inductance test kit parts | Инструменты

Xu's ESR V2.0 capacitance inductance test program has been brushed, only welding calibration is needed. Press the PW key to turn on. Press down again. 2 switching inductance test Automatic shutdown: start with the last key action and turn off after about 10 minutes. Display value: 3KHZ on the right of 72KHZ on the left After debugging, clear key will be mistakenly pressed before measuring or testing. You can use the copper wire short circuit test end to press the clear key to clear the zero. All the inorganic shell of the calibration element! Take one of the power lines. The kit needs to be welded on its own The ESR watch is a powerful tool and assistant for troubleshooting electronic equipment and eliminating circuit faults. ESR table existence and space: the function of the capacitance ESR table, in one sentence, is used to measure the ESR value of capacitance, by which the capacitance (mainly electrolytic capacitor) is good and bad, normal or not. Although its function is single, its practicability is very strong, which is of great help to the maintenance of electronic equipment. As we all know, electrolytic capacitor is one of the components with the highest failure rate, the worst life and the worst reliability in the electronic equipment, and the life of the electrolytic capacitor determines the service life of the equipment in many times. For a long time, the majority of electronic enthusiasts generally lack a kind of effective detection tool for determining the quality of electrolytic capacitors. The appearance of capacitance ESR can fill this gap. ESR table main functions and advantages: 1. identification of electrolytic capacitor and high accuracy It can be seen from the preceding introduction that ESR is a parameter directly referring to the performance defects of capacitors. Hidden problems such as electrolyte leakage, drying, or electrolyte loss of activity can be detected by capacitance ESR. In the words of a foreign producer, we can identify more than 95% electrolytic capacitors with problems. He did not say 100%, behind an important reason is that the capacitance ESR watch (not specially designed) can not detect the short-circuit fault between the capacitor two contacts. Fortunately, the probability of such short circuit faults is far below the probability of capacitance failure. The external performance of the circuit will be very obvious and easy to be checked by the ordinary multimeter, even if a short circuit fault occurs, or the device in parallel has a short circuit fault. For example, the voltage and DC resistance of both ends of capacitor are far below the normal value. 2. can be measured in the road, without removing the components, greatly improving the detection efficiency. ESR V2.0 First, Xu's overview: • overview of the range: Resistance measurement (sensorless): Scope: 0.01 to 20 Europe. There is only one range. Accuracy: 1%+20 milliohm, measured a dozen resistances, the error is within 0.3%+0.01 Europe, the resolution is 0.01 euro. This table may be calibrated to 0.5% Capacitance ESR measurement: Scope: 0.01 to 20 Europe. There is only one range. The capacity is more than 0.1uF Accuracy: the fixed deviation is about 0.9%. If the capacitance ESR is adjusted, the resistance measurement will be 0.9% smaller. Capacitance measurement: Range: 0.1uF to 1000uF, where 3kHz capacitance measurement range 3uF to 1000uF, 72kH measurement range 0.1uF to 50uF. Accuracy: 72kHz and 3kHz simultaneously measure, get two capacitance values. When the relative error is expressed as 3kHz, the capacity error can be expressed as 2%+C/500, 72K is 1%+C/25, and the unit of C in the formula is uF. It can be seen that in order to meet the general accuracy requirements, the capacity less than 50uF has credibility. Inductance measurement: (continuously press the 2 power button, PW can switch). Range: 0 - 60uH (72kHz), 0 - 1200uH (3kHz) Accuracy: 3%+0.04uH, with a general error of about 1%, and a minimum resolution of 0.02uH. The inductance has no calibration parameters, so the error is about twice the error of the resistance measurement. Main uses: 1, the accurate measurement of the capacity of ESR is more than 0.1uF capacitance. The ESR of the CBB capacitance can be measured. The resolution is 0.01 Europe. 2, measure the capacitance of 0.1uF to 10uF capacitance, the smaller the capacity, the higher the accuracy. 1nF. 3, accurately measure the inductance of 0 to 1200uH. 0.02uH. 4, measuring less than 20 ohms, no resistance, accuracy is better than three and a half multimeter, can distinguish 0.01 euro. The above four uses fall within the main range of this table, and the measurement is effective and accurate. Circuit diagram： After welding, self calibration is required. The steps are as follows: (calibration: 20 euro 630V474 0.02 Europe 630V104 0.1 Europe) Calibration steps: 1, use 2cm long thick copper wire for short circuit and zero clearing: press C button to make R=0 Europe the first step is the premise. It is recommended to open the machine in two minutes. 2, Vp amplitude calibration: access to a 20 euro coloured ring resistor. Press the M button to switch to the Vp calibration menu, add or decrease the Vp value with "C" and "K", so that the R display value is the same as the actual resistance value of the measured resistor (20 euro). 3, J0 phase calibration: the capacitance of 0.47uF/630V CBB connected to known ESR (ESR is usually between 10 and 30 millieu). Press the M key, switch to the J0 calibration menu, add or decrease the J0 value with "C" and "K", so that the display value of R is as close to the capacitance ESR as possible (0.02 Euro). 4, J1 phase calibration: access to known ESR 0.1uF/630V CBB capacitance, C K key to increase or decrease J1 value, R=0.1 R=0.1 5, hold down the M key for 3 seconds, then loosen it, automatically save the parameters, and there are prompts on the screen. Then press the M key and return to the ESR measurement state. If there is not enough capacitance to calibrate, the 3 and 4 two steps can be omitted, and J1 can be set at -4. Only J0 calibration, ESR accuracy of 0.01 Euro corresponds to the lower limit capacitance is about 0.3uF. With J1 calibration, the lower limit can be 0.2uF or smaller. Welding reference map: (1117-3.3 patch welding to the back of the board) Test figure 0.1% precision 1 European resistance 25V 1000uF electrolysis

16V 2200uF