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1

I suspect they use a sequential method where they weakly drive the pin high and low and sample the states. There are four possibilities in the truth able, one of which should never happen. Since they do not seem, to be too concerned about floating outputs connected to SA0, a reasonable CMOS input should be okay- but I'd be concerned about long conductors ...


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You can achieve exactly that effect using two CD4015 Serial Input, Parallel Out shift registers. Call them IC1 and IC2. Each chip gives a pair of 4 stage shift registers. You'll only use 3 of the 4 shift registers to make a 12 stage shift register, of which you'll use 11 stages. Connect all the clock inputs of IC1 and IC2 (pin 1 and 9) together to your ...


0

This sounds like a job for a CD4017 and a bunch of or gates. (you have to provide the clock.) I used a 4017 in a circuit, fairly recently. Re-reading I'm not sure about the going out part.... more parts or learn a uC. (Arduino is good because it's easy.)


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These look like charge injection from the overlap capacitance of gate to S/D. If you overlay the intermediate node output (the output from the first inverter) you will find that these edges are related to the the signal swing of this internal node. As the Output is swinging from low to high the internal node must first swing from high to low and some of the ...


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When being bitten by the threshold voltage, an option is introducing a simple voltage amplification stage using a NPN BJT. You power your load from 12V, so you can use that voltage to pull the MOSFET's gate up to a level much higher than the logic level. Basically what happens is the gate is pulled up to 12V unless the BJT is forcing the gate down to ...


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Since you already have it on hand, you may use TIP120 NPN power darlingtons which is rated at 5A as Adafruit TIP120 data sheet. Note, in data sheet max. 5A us 'infinite heat sink', refers to case temperature at 25 (or similar) degrees centigrade. Practical heat sink give about half current rating. 1 watt LED is about 300 to 350mA. For 5 watts, one ...


2

The FCPF400N80Z has a maximum gate threshold voltage (VGS(th)) of 4.5V, which is marginal for logic operation, but the IRLB8721PbF has a maximum threshold voltage of 2.35V. This should work decently well for even 3.3V logic provided you don't need to pass more than about 3A of current.


6

The signal is picked up with a high-speed photodiode array of several sensors to allow the tracking circuitry and focusing to work. Using closed-loop control allows the mechanical parts to have relatively loose tolerances compared to even an LP record turntable. As one Japanese Engineer said you could make the player chassis out of chopsticks and it would ...



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