We found this circuit in a 1967 El3ectronics World. The transistors are from the era but can be replaced by current equivalents. The circuit is for 5 A loads.
This circuit uses a PLL4046 oscillator to excite a piezoelectric ceramic. The circuit is from an...
This circuit already explored in several diagrams in this section was found in a 90’s Popular...
This logic probe or logic level indicator is suitable for use in CMOS circuits. The power comes...