| 555-timer-circuits.com | |
| 网站标题： | 555 Timer Circuits |
| 网站简介： | All the electronics info you need to know about the 555 Timer. With over 80 different electronic circuits that you can build. |
| 关键字： | timer timing circuit 555 ne555 ne556 time 555 timer 556 timer ra rb astable monostable delay oscillator rc oscillator vco voltage control rc electronics electronic circuits |
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