This shortwave preselector was found in the July 1994 issue of Radio Electronics magazine. The circuit is suitable for telescopic antennas, matching the impedance with the receiver used.
September 2017 - The new LDOs of STMIcroelectrinics LDLN025 for currents up to 250 mA and 1.5 to...
The frequency of a XTAL (up to 1 MHz) can be divided by powers of 2 up to 16,384 using the CMOS IC...
This circuit is more elaborate than the previous one. It was obtained from an 80s circuit manual. The...