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  • faceu
    Thyristor protection
    by faceu
    Hello,
    I'm having a problem with burning Thyristors when there's a storm ( Power failure )
    Fuses before the 6RA70 converters are recommended, gS. Occasionally, fuses, as well as thyristors, burn. Fuses are simple and quick to change, whereas thyristors require more time and delays.
    ...
    25-02-2022, 05:14 PM
  • faceu
    3.DC power supply cannot be regulated
    by faceu
    Hello,
    A DC power supply, a high-speed DC motor with an emerald engraving machine can adjust the speed through a potentiometer.
    The current fault: It can not adjust the speed, the multimeter detects, the DC output is 42 volts, and the output voltage of the potentiometer remains unchange...
    27-01-2022, 05:12 PM
  • faceu
    How to identify a potentiometer?
    by faceu
    I am trying to find the specs for a potentiometer that isn’t marked. I want to find a pot that matches the specs for the one I have. I want to add a second pot to the circuit so I can control it from two locations. I have identified the wires and voltages but am unsure of how to check the resistance...
    23-10-2021, 05:52 PM
  • faceu
    Intercept SPI of RC helicopter controller
    by faceu
    I've got this radio communication with an RC helicopter. I found that the RX on the heli is using an AVR MCU and a CYRF6989 2.4Ghz chip to communicate with the controller of the heli and translates it to drive the servos and motors. The MCU and the CYRF chip communicate by SPI. I want to intercept and...
    16-11-2016, 01:59 PM
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