Tagged Questions

0
votes
0answers
37 views

Measure Low Voltage Signals [duplicate]

I have a tankless hot water heater in my home that is controlled through a two wire low voltage wiring from a multi function controller. I would like to know how I can measure the signals being sent ...
1
vote
1answer
43 views

Measuring and Replicating Electrical Codes from heating controller

I'm wondering if the fantastic electronic engineering community can assist with a little project I'm attempting. I have a Rinnai tankless hot water heater that is controlled via a hot water controller ...
2
votes
0answers
88 views

Precision Tracking filter required

I don't mind if it's a band-pass or low pass filter (although I think low-pass will give a better result). Input operating frequency range is 100Hz to 1kHz. Input amplitude will be about 1Vp-p and ...
1
vote
0answers
90 views

Need help with generating a bi-phasic current

I'm trying to generate a symmetric biphasic current pulse using a Grass S88 Stimulator. Here's a diagram: SG is a signal generator with two outputs, S1 and S2, which are generating a periodic ...
2
votes
1answer
100 views

Tips about signal strength metering with percentage

I'm working with a device that receives digital television signals in the range of -40dBm to -100dBm. My tuner component has some status register that will give me a value for the signal strength, and ...
5
votes
3answers
297 views

Is it possible to calculate effective value of a signal from its average value?

I have a signal which I want to calculate its effective value. The signal is a voltage value read on a 33.3m\$ \Omega \$ resistor connected series to a 220V AC power line. My aim is to calculate the ...
3
votes
1answer
162 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 ...