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Rajsbom's Achievements

  1. HI, Voltage @ Pin 11 and 12 should be 4.5V, if not then check If zener diode is shorted or installed reverse, or IC is shorted.
  2. You may use adjustable Voltage DC-DC converter such as LM2576-ADJ, LM2596-adj , play with NTC + Divider Resistor at feedback you may get it https://www.ti.com/lit/ds/symlink/lm2576.pdf?ts=1679379636858&ref_url=https%3A%2F%2Fwww.google.com%2F
  3. This inductor is made using POT Core, value Approx. 640uH to 680uH will work, current could be 100mA, you may try Drum Core Coil from Mouser Part No 80-SBCP-80HY681H https://www.mouser.in/ProductDetail/KEMET/SBCP-80HY681H?qs=pfd5qewlna7zBsC5r9mWjg%3D%3D Or you may make one using POT Core, Value approx. 680uH , Current 100mA or less https://www.digikey.com/catalog/en/partgroup/p-core-type/50202
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