This low frequency oscillator circuit was found in an Electronic Design from the 90s. The transistors are common types, and the frequency is given by the crystal.
This circuit is tuned to reject stations of different wave bands that may be interfering with the...
This circuit generates a 5V rectangular signal. The circuit is suitable for calibrating TTL...
This circuit has a 2 V full scale using a 4-and-a-half-digit A / D converter. The circuit is...