This is an improved version of the previous circuit also found in the December 1990 Radio Electronics magazine. The duty cycle is also 50%.
This circuit can be used with any auio amplifier, converting it into a AM receiver. Antenna is a...
This digitally programmed gain amplifier was obtained from Signetics documentation from the 1980s....
A NOR gate can be improvised using one NAND gate of a 4011 as shown here. The diodes are...