This intermediate frequency amplifier step using 2 junction FETs has a gain of 20 dB. The pass band is 4 MHz. FETs are for general use, with several types that serve in this circuit as BF245.
The circuit presented was obtained from an Electronics Now magazine from February 1995. The...
This circuit, found in an old publication, uses operational amplifiers from National Semiconductor that are...
) This is the original application of the National Semiconductor LM3909 low consumption pulsator. The LED...