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The issue here is that the transistors don't have zero on-resistance (it depends on whatever your model is) so you get the RC (the on-resistance of the transistor and the capacitive load of the subcircuit) discharge and non-zero final output. If this is an actual design, you're going to have to deal with it. If you have a power mosfet and the current of ...


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I'd recommend a bistable mechanical relay. Advantages: Electrically isolate your Arduino and HDMI switch Holds either state without power (especially useful for noise suppression) No voltage drop across closed contacts; exactly replicates electrical properties of the switch you'd replace A quick search revealed a candidate (PB1618-ND) with bistable ...


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There is no rule that mandates a P-sub/N-well process. In fact, there are many CMOS processes which work the other way, with N-sub/P-well. An example of a chip that uses such a process is the LMC660. A look at its schematic emphasizes this: the NPN's Q26/27 in its bias circuit are constructed as lateral N+/P-well/N+ (with a parasitic vertical substrate ...


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You said fairly accurately. So I wouldn't use an RC oscillator but a crystsal oscillator. The 4060 can also be operated as crytstal oscillator. A 32.768kHz (clock) crystal would yield a 2 Hz signal (after all 14 stages of the 4060). So you need another divider/counter, e.g. a 4040 to count 5 * 60 * 2 = 600 pulses at 2 Hz. You can use half a 74HC21 (4 ...



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