Based on an LM36000 OTA this circuit was found in the July 1988 issue of Radio Electronics magazine. It covers frequencies in the range of 45 Hz to 45 kHz.
Found in Popular Electronics, this sophisticated short-wave receiver requires a lot of skill from...
This circuit, which can be found elsewhere on this site, detects positive pulses of a signal. The...
This microphone preamplifier with output intensity adjustment is suitable for modulating...