| 摘要 |
A meander-type pulse shaper with an adjustable pulse length comprises two reversible countdown binary counters, each of which having sync pulses input, synchronous load enable input and data loading inputs, counter mode enable input, asynchronous reset, overflow output, first and second inverter, two-input OR element, a circuit comprising in series connected resistor and capacitor, a start-stop device comprising synchronous D flip-flop having asynchronous reset input, two-input element AND. Overflow output of second counter is connected to first input of two-input OR element. Second input of OR element is connected to inverting output of D flip-flop. |
