This oscillator was found in the January 1987 issue of Radio Electronics magazine. The frequency is adjusted by C1, and the output has good symmetry. The power supply is typically 3 to 12 V.
We show in the figure how to implement the No-AND or NAND logic function using a general-purpose transistor....
This circuit was found in a 1980s documentation. Modern general purpose transistors can be used....
Many collectors of records, tapes and even audiophiles often keep recordings on tapes that...