Jul 30, 2007 #1 S smiles Advanced Member level 4 Joined Jul 27, 2007 Messages 110 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,296 Activity points 2,096 I wonder it for a long time, just think it is some voltage value compared to mass ??? Could anyone give me clear explanation !!! Thanks so much
I wonder it for a long time, just think it is some voltage value compared to mass ??? Could anyone give me clear explanation !!! Thanks so much
Jul 30, 2007 #2 eehero Full Member level 3 Joined Nov 23, 2005 Messages 169 Helped 13 Reputation 26 Reaction score 5 Trophy points 1,298 Location Libya Activity points 2,620 u can do it with Max232. try the following links: https://www.iguanalabs.com/negvolt.htm **broken link removed** https://www.societyofrobots.com/electronics_negative_voltages.shtml
u can do it with Max232. try the following links: https://www.iguanalabs.com/negvolt.htm **broken link removed** https://www.societyofrobots.com/electronics_negative_voltages.shtml
Jul 30, 2007 #3 A A.Anand Srinivasan Advanced Member level 5 Joined Oct 15, 2005 Messages 1,792 Helped 257 Reputation 514 Reaction score 39 Trophy points 1,328 Location India Activity points 10,678 can you please make your question clear... i dont understand why you are involving mass here...
Jul 31, 2007 #4 S smiles Advanced Member level 4 Joined Jul 27, 2007 Messages 110 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,296 Activity points 2,096 Max232, I will remember it, but do you think that we can create it by another way, not by using ICs ?
Max232, I will remember it, but do you think that we can create it by another way, not by using ICs ?
Aug 1, 2007 #5 C castrader Member level 1 Joined Jun 8, 2005 Messages 36 Helped 7 Reputation 14 Reaction score 1 Trophy points 1,288 Activity points 1,468 use switch-cap can easily generate negtive voltage reference.