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Recent content by Zak28

  1. Z

    Can silicon junctions be harmed with magnetism

    Would analog or digital ICs which aren't attached to a PCB pulled out of their original tape or tube packaging be effected or harmed from few rapid pulses of ~8kG from an air cross over inductor coil? Silicon in chips are semiconductors and back emf can be induced straight onto the junction...
  2. Z

    [SOLVED] Mains leaking currents causing problems in my house

    Wouldn't a buried pipe bonded to PSU chassis be adaquate to resolve his issue?
  3. Z

    [SOLVED] Mains leaking currents causing problems in my house

    Here is a 220v variant https://www.amazon.com/dp/B013WWKQV0 its very useful as it detects very common issues, your linked product should work fine also.
  4. Z

    [SOLVED] HEI primary current duration

    Min automotive rpm = ~700rpm - 1000RPM max dwell for 700rpm = ~84mS long which is plenty to to burn up a low resistance primary HEI coil. According to attached document resistors on the primary used were used later replaced by varying dwell time with control module. Ignition gate drivers can...
  5. Z

    [SOLVED] HEI primary current duration

    For GM HEI coils are dwell times adjusted by an onboard processor?
  6. Z

    [SOLVED] HEI primary current duration

    What was meant is reducing the falling edge to keep it below the many thousands of volts it will rise to thus lowering the power dissipation of the RC snubber. There has to be a large back emf on the primary to make the rated HV on the secondary. Automotive ignition drivers use ramps with...
  7. Z

    [SOLVED] HEI primary current duration

    Would using straight square waves on the primary, but keeping within the rated peak current damage the HEI?
  8. Z

    [SOLVED] HEI primary current duration

    Do ignition drivers typically adjust the falling edges during ordinary operation to prevent excessive back emf spikes?
  9. Z

    [SOLVED] HEI primary current duration

    Can the dwell time and period on the primary side be any duration so long as it abides by the maximum peak current? Manufacturer's Part Number:D3070 Primary Resistance:0.350 ohms Coil Internal Construction:Epoxy Maximum Voltage:50,000 V Turns Ratio:85:1 Secondary Resistance:8.30K ohms...
  10. Z

    [SOLVED] would iron wire block high frequencies

    Would it also slow down sharp unidirectional di/dt edges?
  11. Z

    [SOLVED] would iron wire block high frequencies

    Would iron wire become hysteritic and attenuate high frequency AC if it were used as a conductor?
  12. Z

    [SOLVED] Diode performance specification

    Most small SMT diodes dont have any charts for recovery time or di/dt.
  13. Z

    [SOLVED] Diode performance specification

    Is a fast recovery diodes maximum reverse recovery time the same speed during its max forward current & Repetitive peak reverse voltage or is it much longer than what was specified?
  14. Z

    H bridge with IR2110

    There are self oscillating half/full bridge inverters with builtin dead time and can vary frequency with simple components including a potentiometer. https://www.mouser.com/ProductDetail/Infineon-Technologies/IRS24531DSPBF?qs=Z8%252BeY1k3TIKVcOuxs6IVXg%3D%3D...
  15. Z

    [SOLVED] Do The Input And Output Capacitors Effect Efficiency In Switching Regulators

    Wouldn't the ideal method to reduce ESR be to break up the recommended 22uF from switcher datasheet - into 3x 10uF capacitors thereby reducing ESR?
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