Recently, we have received numerous inquiries from customers to our Jinkaitai marketing department, inquiring about the sales price of GKT3259 transformer tester and understanding why 3259 from other companies in the market is cheap, and so on. What exactly is the reason for this? We are now conducting a technical analysis of counterfeit 3259 transformer testers (hereinafter referred to as "fake 3259") on the market regarding this issue. We hope that users can have a comprehensive and in-depth understanding and understanding of such counterfeit instruments, eliminate misunderstandings, and make a positive impression!
1. The fake 3259 uses the digital and analog boards of the LCZ 106X series bridge (traditional double integral AD conversion) as the hardware platform, and applies the basic format of the old version of the 3250 software to process the English into Chinese and transplant it, saving several auxiliary circuits and greatly reducing hardware costs. As a result, the use and accuracy of testing frequency and voltage are greatly limited, which cannot meet the arbitrary input of transformer comprehensive testing frequency Requirements for retention and expansion of functions (see figure below):
2. The false 3259 turn ratio (TURN) test can only provide a test voltage of 0.01-5V and 30 fixed test frequency points; The turn ratio test voltage of Jinkaitai 3259 (hereinafter referred to as GKT3259) and the old traditional 3250 transformer comprehensive tester is 0.01-10V, and the frequency can be input arbitrarily in the range of 1-200KHz to meet various testing requirements of users.
3. The fake 3259 inductance (Lx) test can only provide a test voltage of 0.01V-1V and 40 fixed test frequency points; The inductance (Lx) test voltage of GKT3259 and the old traditional 3250 transformer comprehensive tester is 0.01V-2V, and the test frequency can be input arbitrarily in the range of 0.02-200KHz to meet the characteristics testing of various magnetic and resistive capacitance devices.
4. As you all know, the 106X series bridge uses the SD5001 signal control switch, which is similar to the gate of a reservoir. To switch freely, it has extremely high requirements for speed, and the switching speed directly affects the performance of the device, requiring a high level of manufacturing technology. The 106X series 200KHz digital bridge not only refers to the output frequency of the instrument, but also measures the phase of the signal on the test piece to be resolved at this frequency. However, the "rate" and "double integration" principles of analog switches limit the improvement of this performance. Therefore, the testing frequency of the 106X series bridge is only listed at 200KHz, while the false 3259 marks it at 300 KHz (adding two pseudo frequency points of 240KHz and 300KHz), which is obviously fooling laypeople.
5. The fake 3259 system indicates that there are four types of internal resistance options, but in reality, there is only one type of internal resistance (the 106X series bridge is designed as a 50 Ω internal resistance circuit). We use high μ The samples of easily saturated magnetic devices were tested using different internal resistance modes of false 3259, and the test results were completely consistent. The relationship between the test current Im and the voltage Vm, the output impedance Zo of the instrument, and the impedance Zx of the inductance is: Vm=Vs · Zx/Zo+