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Recent content by jmx66

  1. J

    Advices and check with high low level pump with Kicad

    1595173543 Hi all, I made some changes to the initial schematic, after reading your previous replies. 1 Resistor 10 MOhm for U1A input 2 Polarised capacitor 63 v 680 µF CP Ceramic capacitor 100 nF C7 3 Manual switch for stop 4 Ceramic C8 C3XX-X7R To do: Read, and read and read...
  2. J

    Advices and check with high low level pump with Kicad

    Hi Klaus, and others membres, Thanks a lot for your advices, really helped me. Jm 1593539956
  3. J

    Advices and check with high low level pump with Kicad

    Thanks for your reply. Jm 1593453561 Thanks for your reply. Jm
  4. J

    Advices and check with high low level pump with Kicad

    Hi Klaus, Thanks a lot for your quick reply. I made a pcb, some loooooong time ago with transfert and adhesive tapes.... Old school; it worked perfectly for about 20 years. Only relay with free wheeling diode, capa and resistor to delay, and classic switch with pnp. For short, if I want to...
  5. J

    Advices and check with high low level pump with Kicad

    Hi all, I'm not an experienced '' designer '' with Kicad ...., but I really like open source softs and more precisely Kicad, BRL cad, and FreeCad. My board is a basic one; only to monitor and switch on - off, an immersed pump for a water pool. SSR choice: SSR RA4850 If someone would check...
  6. J

    LT1070 power supply schematic

    Hi treez, Thanks a lot for your quick reply. Frankly, i didn't think of a such weak power factor for this bridge!!!!! I ' m going to google a lot, for CTX5 inductor or similar, in 5A to 8A range. Thanks a lot...
  7. J

    LT1070 power supply schematic

    Hi treez, Thanks a lot for your help, first. In short, i plan to get: Transfos 160VA : 12V https://www.reichelt.de/Transformers-toroid/RKT-16012/3/index.html?&ACTION=3&LA=2&ARTICLE=15266&GROUPID=3321&artnr=RKT+16012 15V...
  8. J

    LT1070 power supply schematic

    Hi all, I only want to build - if it is possible of course - a small power supply with a LT1070 . How to replace L1 Coiltronics CTX02-11808-1 ? Reference of a transformer for say 5 A , and 1.25 to 30 V. Homemade or off the shelf ? Of course, idem for L2 Coiltronics CTX5-5-FR...
  9. J

    [SOLVED] Power resistors for LM2673 Switch Power Supply

    Thanks a lot for your help, Klaus. I'm going to redraw the schematic. jm
  10. J

    [SOLVED] Power resistors for LM2673 Switch Power Supply

    Hi all, Project: basic swich mode power supply output :2-3 A and 24 -25 V I only need to know power for resistors R1 and R adjust 1 ( See schematic ) LM26 2673 Datasheet https://www.ti.com/lit/ds/symlink/lm2673.pdf RK8012 80VA 2 x 12 V 2 x 1,33 A...
  11. J

    Bidirectional motor control without MCU or NE555

    Thanks a lot first, Right for upper transistor, so mistake on this schematic? For lower 2.2 KOhm and 10 KOhm. Regards. jm
  12. J

    Bidirectional motor control without MCU or NE555

    Thanks a lot. Don't worry about power supply... Alternator + bridge output of Yam 500XT: so 60 Watt isn't a problem. Jm
  13. J

    Bidirectional motor control without MCU or NE555

    Thanks a lot for your reply. For more current if TIP31 replaced by TIP122, resistor values changed? Thanks a lot. jm
  14. J

    Bidirectional motor control without MCU or NE555

    Hi all, I found this schematic, and i want to know if there's no mistakes... In fact, motor current is about 2 A ,so what resistors values for TIP122 - TIP31 become TIP122 - ? It's for a road book, so no MCU, NE555 ...
  15. J

    Need advice on bldc schematic

    Hi all, I drew this basic schematic, it's part of a bldc control card; if you could check it and tell me what's wrong, would be great. For now , don't plan to use NTC, later for sure. Thanks a lot for...
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