ci139's Blog

dev/test ( more ) : [EoP]

While the 3-d time "re-inventing" the RS-D Trigger i came up with this 1-st • here's the performance comparison (both perform the R/S functions at the same speed - there's some difference in D-Latch mode . . .) ▼ ▼ ▼ ▼ ▼ ▼ ———————————————— Update : ran some tests on the SN7474...

____________________________ in the next :: to find -- the analytical method for converting the 2-XOR into the 4x NAND implementation -- is somewhat a tricky task. ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ ____________________________ + some correlations with 3-xor // the analogy with the 2-xor's NAND-s...

Provided (although simple and very easy for anyone to come up with on his'/her' own) just because I haven't spotted such in www nor in literature... The following utilizes two types of counter cells to make a 4-bit binary and a 4-bit BCD counter. [End of this post]

the Fig.10 from http://sound.whsites.net/appnotes/an001.htm yielded the best result in simulation - so far - of what i have tested (*) /// -- i needed a fast ideal diode for a simple analog voltage multiplier or VGA circuit -- such that responds correct asap. after the zero crossing !!! but it...

while playing around with Spice - found some voltage reference circuits - that seem to have high PSRR Latest :: 1-st :: [End of post]

( extends the https://forum.allaboutcircuits.com/threads/opamp-virtual-relative-ground-proper-use.126736/ ) http://chpsndtch.blogspot.com/2017/02/op-amp-internal-ground.html i have done yet NO ANY real tests confirming the feature nor do i know too much about this -- just that the Spice's...

although it's quite basic and simple stuff -- then some while ago i actually managed not to see it as such , in a particular app , where the difference of the input voltages had to be referenced to Neg-Rail ( what made it so hard to see is that usually you work with 1 signal at the time . . ...

Pre notice: the following has some numeric values listed that are to be taken with certain respect as the LT Spice (used to derive those numbers) uses an equitable , say a "P/N-MosFet-s" , to form it's quantized OUTPUT , the performance of these counter types is much dependent on actual...