9s complement of BCD digit | Electronics Forum (Circuits, Projects …
WEBMar 18, 2010 — 0000 1111011 - instead of 1111110 (i.e. display 9 instead of 0) 0001 1111111 - instead of 0110000 (8 instead of 1) ..etc. So for an input of 0000 the output would be 9, for 0001 8, 0010 7 and so on. Then from the truth table work out an appropriate arrangement of gates for segments 0-6. Or if you already have a …
Logic Problem - Electronics Forum (Circuits, Projects and …
WEBDec 25, 2010 — So what you have to do is go through all the digits from 0 through 5 and find a number, which when added to the base 6 digit will make it equal to five. Then just flip the bits of the number. Starting from 0, we discern that 5 needs to be added to 0 to make it five. Then flipping the bits of 5 we get 2. Therefore 2 (010) will represent 0 in the ...
ULN2003 complementary? - Electronics Forum (Circuits, Projects …
WEBWell-Known Member. Jun 5, 2004. #2. Allegro Microsystems has a lot of power driver ICs. In particular, they have **broken link removed**, which are sourcing ("PNP") drivers. Unfortunately, they are not pin compatible with the 2003 because they have eight sections, as opposed to 7 for the 2003. BTW, I found these by searching for "pnp darlington ...
Modern Replacements for PN2907A and PN2222A
WEBJun 20, 2007 — I was wondering what are some modern replacements for 2 common transistors that I use: PN2907A PN2222A They must be non-amplifying, TO-92 package transistors. THANKS
measuring rise time percentages 10%-90% - Electronics Forum …
WEBAug 1, 2005 — The 90% voltage in this case is 9V and occurs at 9s the 10%-90% rise time would be 9sec
BC182 and BC212 Equivalent Transistor - Electronics Forum …
WEBNov 25, 2009 — Hi guys, im new here and im a still a student =p Im trying to build a doorphone project but i couldn't find any BC182 and BC212 Transistors, can you tell me the equivalent transistor/s? I've already made some research and came up with c1815(NPN) = BC182 Whats the PNP for c1815 series...
Most common resistors (to keep in stock)
WEBJan 19, 2008 — You could order a grab bag of resistors to complement the more common ones you order in 100 lots: https ...
Is there a simple way to get 36v dc from a 12v battery (only need …
WEBFeb 7, 2011 — The problem is that the LEDs are in series of 9s and each needs 2.8v ! I did consider rewiring them but the tracks are so tiny that I gave up on that idea quickly. I seem to remember from many years ago making a voltage multiplier from just diodes and caps I think, would this be reasonable considering I only need the 36v to be at 20mA or less?
convert PMPO to RMS - Electronics Forum (Circuits, Projects and ...
WEBMay 17, 2006 — The most honest way to rate a speaker is to give the rating as continuous RMS watts (ex: 150 watts continuous rms power). You may hear speakers advertised as "150 watt 6 x 9s" or "100 watt 6 x 9s" and you may instantly think that the "150 watt 6 x 9s" are better and will play louder than the speakers rated at 100 watts.
Help: 3-phase sine generation lookup-table microcontroller
WEBOct 15, 2013 — The numbers work because of how 2's complement work. EDIT: actually I think there might be a bug.. let me look into that. EDIT: Yeah, I was wrong with the previous one.. You need to add 128 to each value and then cast to uint8.. Ill fix the code example. (2's complement does not work.) EDIT: Fixed the code.