Steven5103 Posted November 19, 2010 Report Share Posted November 19, 2010 hi,can anyone please help me with these...can i know the current supply for HA17741 op-amp???and the short circuit current for HA17741 and LM301...help me please... thanks in advance...^^ Quote Link to comment Share on other sites More sharing options...
Hero999 Posted November 19, 2010 Report Share Posted November 19, 2010 Look onb the datasheet, which can be found using a search engine. Quote Link to comment Share on other sites More sharing options...
Steven5103 Posted November 20, 2010 Author Report Share Posted November 20, 2010 thx for the help..>^^but i got the datasheets d...i can get everything from there, except the supply current and short circuit current only...for LM301 and HA17741...DataSheet_HA17741.pdfLM301.pdf Quote Link to comment Share on other sites More sharing options...
audioguru Posted November 20, 2010 Report Share Posted November 20, 2010 The opamps you are looking at are 40 and 42 years old. There are much better ones available today for nearly the same cost.The Japanese 741 opamp datasheet does not say the supply current like American datasheets do but shows a graph of the power dissipation vs supply voltage on page 10. For example, with a plus and minus 15V supply the power dissipation is 65mW then the supply current is calculated to be typically 65mW/30V= 2.2mA. An American LM741 is listed to have a supply current of 1.7mA.Look on page 12 of the Japanese datasheet to see a graph of the "Max output Shorted Current" vs temperature of their 741 opamp.The datasheet for the LM301A lists its supply current very clearly on page 2 and shows a graph on page 4.It shows a graph of its Output Current Limiting on page 4. Quote Link to comment Share on other sites More sharing options...
Hero999 Posted November 20, 2010 Report Share Posted November 20, 2010 What do you want to use these crappy op-amps for?You do know they're no good for audio.If it's just DC voltage amplification they'll be fine as long as you're aware that the inputs and outputs need to be 3V above the negative supply and 3V below the positive supply in order for them to work properly. Quote Link to comment Share on other sites More sharing options...
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