The frequency of this circuit depends on the crystal. The transistor supports a modern equivalent. We found it in documentation from the 1980s.
This switch is bounce free and is recommended for the control of CMOS circuits. The switch must be...
This interesting shield circuit was obtained from a Poptronics of February 2001. The American...
This circuit with the LM741 operational amplifier can be applied to other operational amplifiers. We...