Wien Bridge
This Vienna bridge oscillator generates a sinusoidal signal whose frequency depends basically on C2 and C4. The circuit is from an Electronics Now from December 1993.
This TTL oscillator uses an old TV crystal, having been found in an American publication in 1976....
Two NAND gates are used in the configuration shown here to perform as a monostable triggered by...
This circuit trips, changing state, when the input voltage exceeds a value determined by R1 and...