| 摘要 |
<p>PURPOSE:To obtain a stable output signal with use of a simple circuit by taking the signals with phases adverse to each other out of the input and output terminals of a gate to which a crystal oscillator is connected and adding both signals together and dividing them after applying the level control to these signals and transmitting them through another gate circuit. CONSTITUTION:A crystal oscillator 2 and a high resistance 3 are connected to both ends of the input/output terminals A and B of an inverter 1 together with the capacities 4 and 5 for generation of oscillations. The DC components are deleted by both capacities 6 and 9, and the signals of both terminals B and A are inputted to the inverters 12 and 13. The output signals C and D are added together via a NAND gate 14 for acquisition of a pulse having a frequency double as high as the desired one. This pulse signal is divided down to 1/2 by a frequency divider 15. Thus a pulse of a desired frequency is outputted through an output terminal 16.</p> |
