| 用带内部振荡器的串行计数器构成的定时器 |
| 添加时间：2019/6/21 14:47:59 浏览次数： |
| 其特征是：用带内部振荡器的串行计数器构成的定时器IC2输出接计数分配器IC1和数字钟专用集成电路IC6；在计数分配器IC1的输出端接开关三极管BG的基极，开关三极管BG的集电极串接继电器J，用继电器J的接点串接在电位器TW和调节仪T中的电阻电桥电路之间，用继电器J的另一接点串接预血关TK和断电继电器J12，用断电继电器J12的接点串接在电源电路中 Its characteristics are as follows: the timer IC2 output with serial counter with internal oscillator connects the counter distributor IC1 and the digital clock IC 6; the output terminal of the digital distributor IC1 connects the base of the switch transistor BG, the collector of the switch transistor BG connects the relay J in series with the resistance bridge circuit in the potentiometer TW and the regulator T, and the relay is used. Another connection of J is connected in series with TK and J12, which are connected in series with J12 in power supply circuit. |
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