Recent content by metal1

  1. metal1

    Led display Digital Voltmeter question

    Hello I just wantes to know what is the purpose of REF HI and REF LO pins, also does the above schematic has a 2.000 volt full scale or not . In AN023 application note, it is said that to obtain 2.000 volt full scale, pin 29 cap must be 47nF, pin 28 resistor must be 470 K, and pin 27 cap must...
  2. metal1

    LM317KCS From Texas Instruments

    Hi everybody I am designing a power supply using LM317KCS,and from the datasheet I have downloaded from TI's technical documentaions,this regulator IC is capable of delivering 1.5 Ampere @1.25 to 35 volt output,considering the condition that the voltage drop accross the IC multiplied by the...
  3. metal1

    M58484/M58485 Encoder/Decoder Pairs

    Thank you for the reply I think those ICs are out of production lines these days,but the manufacturer is mitsubishi. I meant if any body got their datasheets from the old days of internet,anyway thank you for every body.
  4. metal1

    LM350 Variable Power Source

    Hello What happened with LM350 is as follows: As its designed to dissipate a power of 30 watts,and it can be calculated using the formula: P=V(drop)*I(consumed) So when you are using 24 volts transformer,and want 12 volts,the maximum current that you can draw is 2.5 Amp.
  5. metal1

    amplifier hum

    Hi ;) The chassis may be connected to the tape head wire shielding ,so when you touch it the speakers start humming,because you form a source of 50Hz or 60Hz mains hum as you being human,and affected by electromagnetics,as antennas are,just to make the image closer.
  6. metal1

    M58484/M58485 Encoder/Decoder Pairs

    Dear Everybody :) Imade A mistake when quoted the ICs numbers,but here are the right numbers,would any one has a datasheet for them. Best regards
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