Light alarm schematic circuit diagram
Posted on Feb 4, 2014
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The circuit consists of two oscillators, both working at about 465 kHz. One uses an if...
Input signals from the power line are coupled through C23 and R19 to the input filter network....
Channell is wired as a conventional integrator, and channel2 as a voltage follower. When channel2...
The crystal oscillator, which uses two sections of IC1, a 4001 quad 2-input NOR gate, is a...
Except for the coupling and decoupling capacitors, IC1 is a complete wideband amplifier that has...
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