Wienbrücke mit Dioden (Oszillator)

Only four NAND-gates are needed to build a spike mono- flop. The delay time of three series - connected gates is used as the time- governing element (output pulse width). These three gates also function as an inverter for the incoming signal. During static conditions when the input signal is either `0` or `I` the gate N4 receives input signals which are not the same. This means the NANO output will be high (I).