This 1 kHz filter was found in the March 1997 issue of Electronics Now magazine. The circuit is applicable to any operational amplifier with a dual power source.
The circuit shown in the figure can serve as a basis for frequency meters, clocks. Stopwatches and many other...
This circuit is from an English book from the 1980s. Transistors can be general-purpose types of...
In this oscillator a phase shift network formed by C1, C2, C3 and R1, R3, R4 determine the fase...