We show in the figure how to implement the No-AND or NAND logic function using a general-purpose transistor. The 47 k base resistors and collector can be changed to other supply voltages.
This digital potentiometer is from a 1993 publication, but it can be easily assembled today. R1 to...
Maxim MAX16813B 4 Channel LED Driver These Maxim Integrated LED drivers are available from Mouser...
This circuit was found in an American magazine 73 for radio amateurs of the 80s. It is an...