| 摘要 |
A meander-type pulse shaper adjustable by preset priority comprises two binary reversible counters each of which has a clock input, a parallel load enable input and a data loading enable input, a counter mode enable input, an asynchronous reset, an overflow output, first and second inverters, a two-input OR element, a circuit comprising in series connected resistor and a capacitor, a start-stop device comprising a synchronous flip-flop with asynchronous reset, first and second two-input AND elements. A priority encoder is incorporated; outputs thereof are connected to the corresponding inputs of parallel load of the first and second counters. The inputs of the priority encoder form the inputs for adjusting the shaper to required width of the output pulses. |
