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  1. caps

    Not understandable ESR value of the capacitor.

    At 100kHz, the impedance loses its meaning.
  2. caps

    Not understandable ESR value of the capacitor.

    The Electrician Yes, it completely coincides with my worldview. Thank
  3. caps

    Not understandable ESR value of the capacitor.

    12ohms. MESR-100. Wide Measurement Range: >1uF (for 0.1uF the error will be larger on equation 1/(2*pi*F*C) @ 100Khz )
  4. caps

    Not understandable ESR value of the capacitor.

    https://www.electronicspoint.com/threads/esr-meter-in-the-battery-tester.289156/
  5. caps

    Not understandable ESR value of the capacitor.

    The search for the datasheet for the maximum impedance of an electrolytic capacitor of 0.1uF-50V, at a frequency of 100 kHz, ended without result. It seems to me that the maximum impedance of this capacitor at a frequency of 100 kHz will be approximately 40 ohms. Following the logic, my ESR...
  6. caps

    Not understandable ESR value of the capacitor.

    Yes, electrolytic.Nichicon.For the first time I met this, so the result caused doubts. It is strange that there are no small capacitors in any ESR table, because they are sometimes found in different devices. My tester measures at 100 kHz and the waveform doesn’t matter much here. Found...
  7. caps

    Not understandable ESR value of the capacitor.

    I checked the electrolytic capacitors during the repair of the old audio center. When checking the capacitor 0.1uF 50V, my ESR meter shows more than 10 Ohm. I looked at different ESR tables, but I did not find such a capacitor there. What is the allowed value of the ESR of this capacitor?
  8. caps

    Can anyone identify this chip?

    Perhaps this LM337.
  9. caps

    Capacitor tester in circuit

    In-circuit measurements. Comparison of results with RC Tweezers. Film capacitor 100nF. Range 0,1uF.
  10. caps

    Simple multitester

    By the tone of the sound of the beeper, you can approximately determine the resistance value in the tested electrical circuit. By the duration of the decaying sound in the beeper, you can approximately estimate the presence of capacitance in the capacitor. By the duration of a click in a beeper...
  11. caps

    Simple multitester

    If they want to repeat this scheme, they can take into account your recommendations. Any changes that improve the work are always good. I repeat, this is a simple tester, I mainly use it to check for breakage of various electrical circuits, contacts and fuses. Unlike a multimeter, the test is...
  12. caps

    Simple multitester

    Before checking the semiconductor elements directly in the circuit, it is necessary to know their characteristics and application. I have already said that the tester normally works when powered 3V. In addition, it has a small test current. For all the time of using multi-tester, not a single...
  13. caps

    Simple multitester

    Probes tester connect, breaking the power circuit. About the rest wrote in the first message. I used a beeper from an old phone.Its resistance is 22Ohm. Therefore, the sound is very powerful. You can check the electrical connections yourself at a certain distance. You can use more miniature...
  14. caps

    Simple multitester

    This multitester has been working for me for 20 years already. It is powered by a 9v battery. It is very economical, I rarely change the battery. Multitester normally works with sufficient volume and at a battery voltage of 3V. In my circuit I use 3 silicon transistors KT361.
  15. caps

    Simple multitester

    Simple multitester. Quick check resistors, capacitors, diodes, transistors,open circuit. Probes indicate the polarity of the diodes and transistors. Check electrical installation and cable breaks. Powerful beeper, simplicity, cost. Indispensable for electrical work. V1-V3-BC157,BC557,2N3905
  16. caps

    Capacitor tester in circuit

    PCB.
  17. caps

    Capacitor tester in circuit

    You can make this option.
  18. caps

    Capacitor tester in circuit

    A 47uF 400v capacitor is connected in parallel to one of the windings of a pulse transformer. The inductance of this winding is 650uH. The measurement result is completely correct-44uF.
  19. caps

    Capacitor tester in circuit

    Capacitor SMD 220uF. Range 1000uF. Film capacitor 1uF. Range 1uF. Bad capacitor 470uF 25v. Range 100uF.
  20. caps

    Capacitor tester in circuit

    Made new test leads. A thin, flexible cable is connected to the tweezers. Now it is very convenient to work with one hand. Large-sized film capacitors and smd capacitors are easily measured.
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