Found in a publication by National Semiconductor, this circuit provides an output voltage of 3.3 V, ideal for supplying microcontrollers. The maximum current is 500 mA.
This circuit activates an output, which can be a lock, only when a card containing the programmed code...
This circuit was found in Popular Electronics from 1993. The 1458 consists of a double 555. The...
This is a Serial In - Parallel Out or Serial Out [SIPO or SISO] shift register using the...