| 摘要 |
A programmable pulse shaper with pulse length determined by a length of input pulses (that less, more or equal that the preset length) comprises two binary counters, first of which summation one, which has clock input, asynchronous reset input; second – reversible counter-down counter having clock input, synchronous parallel load enable input and loading data inputs, counting mode enable input, asynchronous reset input, overflow output, inverter, OR element, a circuit comprising in series connected resistor and capacitor. A modulo2 addition element, a comparison unit having inversion inputs: “less”, “more”, “equal” are incorporated, first counter is added by synchronous reset input connected to control pulses input and OR element second input. First counter is added by synchronous reset input which is connected to control pulses input and second input of OR element. |
