I have read and reread but can't seem to answer my questions, so here goes :
1. What is the amperage needed on a LM339 input? (data sheet)- http://www.national.com/ds/LM/LM139.pdf How much current does the inverting and non-inverting inputs need to change the output?
2. why do all the texts say that the Forward Voltage Drop on a silicon diode is .7Volts, when the data sheets all give differing voltages of FVD?
I need a diode drop of .6 - .7 Volts at the amperage of the LM339 input. Any ideas?
Thank you, cary
1. What is the amperage needed on a LM339 input? (data sheet)- http://www.national.com/ds/LM/LM139.pdf How much current does the inverting and non-inverting inputs need to change the output?
2. why do all the texts say that the Forward Voltage Drop on a silicon diode is .7Volts, when the data sheets all give differing voltages of FVD?
I need a diode drop of .6 - .7 Volts at the amperage of the LM339 input. Any ideas?
Thank you, cary
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