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Recent content by harii74

  1. H

    how to interface ARM7TDMI with any digital data???????

    LPC2148 (ARM7TDMI) itself having ADC and DAC. You can work with. If you want i can send the code which is running in Keil version4.
  2. H

    ccs rtos and interrupt

    Is CCS for PIC? or Code composer Studio for TI?
  3. H

    Astable multi vibrator using transistor

    Thanks a lot to KAK. Will you please write me that in What way the capacitor polarity does not work in circuit when the polarity is reversed?
  4. H

    Astable multi vibrator using transistor

    Dear All I have used the given circuit, Its quiet working well. When i change the the polarity of the capacitor it does not work.I have gone through the literature, but there is no proper explanation on the polarity. Please answer it. Thanks
  5. H

    Toroidal Transformer design

    Thanks to mtwieg and ravslanka I use the formula for finding CA (core area) and TPV (Turns per volts) for designing EI transformer as CA= 1.151 sqrt(volts and ampere). TPA= 10^8/4.44xFxBxCA Should i change the constant instead of 1.151 in CA...
  6. H

    Toroidal Transformer design

    Hello all I need to know the toroidal transformer design calculation. How to find core area? How to find turn per volts? and etc. Please give me a direction in this.
  7. H

    SMPS transformer design

    I need SMPS output transformer design calculation. Where should i refer? Please guide me some link or direction.
  8. H

    Number of Opamp in signle chip

    Yes sorry I use Opamp as a comparator. I can use either as active low or active high and i no need to use pull up or pull down resistor if i use opamp. Thats what i need opamp. I need 8 opamp in single chip.
  9. H

    Number of Opamp in signle chip

    Number of Opamp in single chip Hello friends I need to know any IC consists of minimum 8 no of opamps in single chip.This is to design 3 bit to 4 bit Flash ADC for laboratory purpose. Right now we use LM324 and TLO84 2 to 4 nos. Thanks.
  10. H

    ATX-SMPS-ICs data sheet or pinout of the IC 2003 needed

    Dear deepuj, This is not ULN2003. It is a SMPS IC.
  11. H

    AUDIO OUTPUT Transformer design

    Thanks to audioguru, chucky and FvM. In india i have seen that the amplifier named AHUJA, designing pushpull amplifier(for PA upto 1000W) with output transformer.
  12. H

    7805 variable regulator

    Hello all, of course all are correct. I suggested this to Theme, because he needs output from 5V to 12V. I strongly believe that it is highly sensitive to short circuit.Is it possible in LM317? Instead of NPN in the circuit, PNP could be used but need small change in connection.
  13. H

    7805 variable regulator

    Please find my attachment. I have drawn this circuit only for this post.
  14. H

    [SOLVED] All Interview Questions - Open Thread - Please Contribute

    Please go through with this attached pdf ( i have downloaded from some where else),Which will be very useful. Anydoubt in this please ask me.
  15. H

    1500W Inverter Full Schematics And Pcb

    Re: inverter schematic and pcb Hello cea, do you have any basic thumb rule to design transformer?
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