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Recent content by pnjbtr

  1. pnjbtr

    [SOLVED] Sine wave inverter with pic16f72 and if2110

    Which programmer,you are using? I tried with JDM programmer and pic pgm software. And got success. I think issue is with your programmer.
  2. pnjbtr

    [SOLVED] Sine wave inverter with pic16f72 and if2110

    Yes you can use 20 mhz if you need output with 60 hz. For 50 hz output with 20mhz crystal you also need to modify value in timer register.
  3. pnjbtr

    [SOLVED] Designing Automatic Voltage Stabilizers

    In previous post i forget to mention that,we also need a port pin(RC3) as output. set_tris_c(0b11110000);//RC3 now output And here we can keep buzzer off,when output volts low/high become ok. [CODE] if (((time>delay)||(input(sw)==0)) && (fault==0)) { time=0...
  4. pnjbtr

    [SOLVED] Designing Automatic Voltage Stabilizers

    I think we can simply use buzzer with some changes in code. Add buzzer according to given schematic at any extra (empty pin) of pic mcu. #define buzzer pin_c3 //buzzer for mains low and high #define relay1 pin_a1 //main change #define relay2 pin_a2...
  5. pnjbtr

    [SOLVED] Designing Automatic Voltage Stabilizers

    Dpwnload Proteus file at #69 post and get hex file #63 post. Keep both files in same folder and press play button in Proteus simulation window.
  6. pnjbtr

    [SOLVED] Designing Automatic Voltage Stabilizers

    adc_read(); if(main_v>2410) {step--; if(step<1)step=1; relay_set();} //239V else if(main_v<1630) //200V {step++; if(step>6)step=6;relay_set();} else; } }...
  7. pnjbtr

    [SOLVED] SMPS Power Inverter with TL494,1404

    Check this, https://www.edaboard.com/threads/303511/
  8. pnjbtr

    [SOLVED] Designing Automatic Voltage Stabilizers

    (#fuses NOWDT,PUT,NOPROTECT,BROWNOUT,NOMCLR) NOMCLR means,we are using this pin as input/output instead of MCLR.
  9. pnjbtr

    [SOLVED] APC-Back UPS-RS 500 continuously clicking

    Most chances are,battery charging section is not working, At a glance i observe that ups is built in smps charger. This page may be helpful, **broken link removed**
  10. pnjbtr

    [SOLVED] Need hex file for pic16f676 based voltage stabilizer

    At a glance ,i understand that minimum input range is 104 v ac. And with 5 step we can complete this project.
  11. pnjbtr

    [SOLVED] Need hex file for pic16f676 based voltage stabilizer

    I am saying upload photo of solder side of pcb(if you can not draw schematic). @srenjis i got this circuit from same forum.
  12. pnjbtr

    [SOLVED] Need hex file for pic16f676 based voltage stabilizer

    Can you draw schematic diagram from this pcb. Or simply upload photo of solder side.
  13. pnjbtr

    unknown component help need it for idintify.

    I think it is 1004. Search with LM 1004. It is like a zener diode. Pin 3 not in use. **broken link removed**
  14. pnjbtr

    [SOLVED] Need hex file for pic16f676 based voltage stabilizer

    See attached file.
  15. pnjbtr

    Trasnformer Design for Voltage Stabilizer

    With these values out put volts are 207 to 253. 253 volts are not good for some products. Generally out put range should be 200 to 245. Ideal taps are 0-110-130-155-185-220.(input range 110-240 & output range 200-245 with 4 steps). For 5 amp current we need 5*110=550+15%=586 watt core.
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