2
votes
3answers
143 views

How do I calculate the input voltage based on an ADC reading?

+UB is a 12V power supply. I have to find the voltage on U_KL30. I take this U_KL30 as an input at PortA<1> of my MC9S08DZ60 and use an ADC to get a ...
3
votes
1answer
48 views

Effect of switching noise on a handheld measurement device

I'm planning to make a handheld LCR meter (plus more) based on Cypress's PSoC 5LP chips. One of their many features is a built in boost converter, which seems an attractive prospect, since it would ...
5
votes
4answers
315 views

Common Analog Signal Frequencies

I'm trying to scope out what frequencies different common analog signals are. The DPScope design specs provides a list of common lower (sub 1 MHz) frequencies (copied below). audio (20 kHz) ...
3
votes
1answer
155 views

How can I tell if something's controlled by an analog or digital input?

Is there a way to tell if something's being control by an analog or digital input without knowing and understanding all the rest of the circuitry involved? I have a Wowwee robot (Elvis) that I'm ...
1
vote
1answer
231 views

How do i measure impedance of my guitar pickups

How would i go about doing this with a multimeter?.Is it similar to measuring resistance? I have some experience with electronics.