This circuit appeared in Radio Elecronics magazine in 1968. The operating circuit is a general-purpose type at the time and the power supply must be symmetrical.
This filter was found in the October 1969 issue of Radio Electronics magazine. The frequency...
This low-power, low-supply voltage amplifier uses a preamplifier to achieve a high-gain...
In a bistable circuit, as shown in the figure, we use two sensors. When one of them is touched, the...