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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by samuel.sam77

  1. S

    Need help on start /stop on single switch with pic micro controller

    Hi Any one plz help me on this code 5 led output (for delay status) 2 switch i/p 1 relay output 5 led status( 5min, 10min, 15 min 30 min, 60 min) delay one switch for select delay and another switch for on/off (relay) problem is on/off function not working properly ,some times working...
  2. S

    Need a better dc 12V/3.5A regulated out from ac 12V/35W alternator

    its ok need a 13.5V/ 3A regulator circuit for battery charging circuit for online use of load current 12v 35W
  3. S

    NTC temperature monitor

    R=Ro*exp(B*(1/K-1/298.15)) You mentioned K=Temp+273.15 what is the temp value here R0-10K B-3977 K-temp+273.15
  4. S

    NTC temperature monitor

    thanks for reply mike i need the conversion code from reading adc input to temperature monitor adc input 10-bit vref -5v how to convert 0-1024 to temp -40 to 120 degree Celsius
  5. S

    NTC temperature monitor

    Hi any one help me i want to monitor the temperature(over heat in my circuit ) is there any formula my NTC data 25c @10K operating temperature -40C to 125C beta value (25/85c): 3977K+/-1% tolorance +/- 5%: +5v | \ /NTC \ / 1K |--------------/\/\/\-----to uC input | /...
  6. S

    Need a better dc 12V/3.5A regulated out from ac 12V/35W alternator

    small doubt ac 12V /120hz voltage convert to dc what is the maximum output voltage in different rectifier topology(half wave,full wave, bridge rectifier)
  7. S

    Need a better dc 12V/3.5A regulated out from ac 12V/35W alternator

    i agree but any simple circuit?
  8. S

    Need a better dc 12V/3.5A regulated out from ac 12V/35W alternator

    Hi dear all I want to construct a circuit dc12v/35w from ac 12v/35w bike alternator 120hz . Application -install new 35w hid light. input float voltage 7-16V ac 120hz expected output 12v /35w i tried with full bridge and lm2575 switching regulator . but its failure . input voltage too high so...
  9. S

    how create menu and sub menu in pic

    Void init_peripheral(); Void Referesh(); void setRelay(); void display(); #bit sel1 =0x07.7 #bit sel2 =0x07.6 #bit sel3 =0x07.5 #bit sel4 =0x07.4 #byte portb=0x06 #bit menu =0x07.0 #bit up = 0x07.1 #bit down =0x05.1 #bit enter =0x7.3 #bit relay1=0x05.4 #byte trisb=0x86 #byte...
  10. S

    how create menu and sub menu in pic

    i am using 7 segment display and four keys menu enter up down any examble
  11. S

    how create menu and sub menu in pic

    hi any one help me how to create main menu and sub menu in pic c program complier ccs c any examble
  12. S

    need Pic 16f873A 4 digit seven segment display code

    thanks for reply roger ,i want to conversion value to display , 0v to 0.00 5V to 5.00 or 4.99 result=adc value /51*100 if 0=0.00 255=5.00 i want display function like first digit result/100 second digit result/10 like that how this function working? urgent plz
  13. S

    need Pic 16f873A 4 digit seven segment display code

    this is the formula for 8 bit adc adc value/51*100 but how to display this into seven segment
  14. S

    need Pic 16f873A 4 digit seven segment display code

    now displays the segment but i need conversion from adc to 0 t0 500 (only three digit enough what is the procedure portb configure as dot,a,b,c,d,e,f,g,h portc as enble digit const int8 seg[]={0x7e,0x0c,0xb6,0x9e,0xcc,0xda,0xfa,0x0e,0xfe,0xce}; portb adress for 0-9 how to displays...
  15. S

    need Pic 16f873A 4 digit seven segment display code

    Your Download-Link:Protel Schematic.pdf **broken link removed**
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