This interesting circuit converts BCD signals into a voltage that can be used in an analog application. The circuit was found in the July 1991 issue of Radio Electronics magazine.
The gain is given by R1 and R2. The circuit is from the 1993 Motorola Linear Interface ICs. The...
This 65 MHz oscillator uses a special transistor from the time that admits an equivalent. The circuit is...
This simple circuit can make use of any general-purpose transistor. The power comes from the...