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    What kind of relay is this?

    Mostly when I see relay, i have only seen a Diode in parallel with the relay coil. The diode clamps the flywheel voltage. So the Diode drains and sinks the coils voltage to ground. I don't see resistors and capacitors in different configurations like this with a relay coil. They call these...
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    Transistors switch on output pin or input pin

    What does these transistors do? U2 , 2N2920 They are placed on the op amps output pin and another transistor is placed on the input of an op amp It seems that these transistors are used as switches to clean up or switch off so the output pin of a op amps is not leaky noise or voltage when...
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    Measuring 800hz ripple looks like noise

    Steve, that guy on the video is claiming that digital oscilloscopes show the noise because analog oscilloscope are hiding it. You have to go into menus and menus to adjust and turn things on in digital oscilloscopes to make it like an analog oscilloscope But this guy is claiming that digital...
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    Measuring 800hz ripple looks like noise

    Why does digital scopes tend to make the noise more visible? Maybe this is the problem , because the test could have been for an analog O-scope
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    Input impedance and Max RMS ac voltage

    Yes , it's ment of devices that have different edge triggered If one TTL is edge triggered on the rising edge and another TTL is edge triggered on the falling edge This is the only example i can think of , is when to use the 4 combinations
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    Input impedance and Max RMS ac voltage

    Are you saying because some logic TTL or CMOS chips have an enable input or trigger input that can be either on the leading edge or falling edge , but have to check the datasheets to tell the tech if the TTL or CMOS chip is a leading edge or falling edge Or What are you saying, explain more...
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    Input impedance and Max RMS ac voltage

    I agree with you But hold on , and look at the chart again Look at Time Interval A+ To B- Look at Time interval A- To B- Why would any tech measure these types of time intervals? This is what i'm saying it doesn't make sense
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    Measuring 800hz ripple looks like noise

    True, I just thought most techs used the average function when measuring ripple I guess you don't or you set the sample other then 16 samples Yes the ripples waveshape depends on the load
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    Measuring 800hz ripple looks like noise

    So what should I set the samples to? on the average function If you overload the device it can make the current higher and the noise higher Overloading a device causes the device to work harder stressing it out
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    Input impedance and Max RMS ac voltage

    I'm not talking about measuring the pulse width of a Pulse I'm talking about: Rising Edge of Pulse#1 TO the next Falling Edge of Pulse#2 This is measured for what type of application? or why would a tech do this? True, but in my experience i have only measured the period of two rises I...
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    Input impedance and Max RMS ac voltage

    So can you please give me examples of when a tech or when you have done this in your experience so I can learn from
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    Measuring 800hz ripple looks like noise

    So ripple is noise? operating point which is the DC reference it's riding on? So ripple is noise? This is why I turn the Average function on the O-scope to take away the noise from the ripple but it still likes like noise to me
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    Measuring the Low state of TTL, CMOS , Pulses

    True , I agree Yes true But don't u think it's the O-scope resolution problem, that is why the slope becomes more noticeable Because I think it's a Resolution problem of the O-scope Yes when you increase the sensitivity the O-scope resolution becomes a problem right? Yes i know, that's...
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    Measuring 800hz ripple looks like noise

    But why do they call this ripple and not noise?
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    Input impedance and Max RMS ac voltage

    Measuring PWM waveforms, why would a tech want to know the Mark to Space ratio? Mark to Space Ratio = High time / Low Time I have never measured the Time Interval from Leading Edge of Pulse#1 to the Falling Edge of Pulse#2 I have never measured the Time Interval from Falling Edge of...
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    Input impedance and Max RMS ac voltage

    The Square waveform ON TIME Length is from Rising edge to the next pulse rising edge? Or the Rising edge to the next pulse falling edge? What you mean the the Mark/space ratio? the duty cycle you mean? Not sure why a tech would want to know the mark/space ratio The off time is the low...
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    Input impedance and Max RMS ac voltage

    This is what the manual says HP 5313B Take a look if u want: http://exodus.poly.edu/~kurt/manuals/manuals/HP%20Agilent/HP%205315A,%20B%20Operation.pdf Gate Time- is the time for which the counter is counting the number of pulses or transition crossings Gate Time- controls the resolution of...
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    What kind of relay is this?

    They dont do anything to the relay, they absorb the flyback energy from the coil when the relay is switched off. Yes i know that is doesn't do anything to the relay Why are each relay suppressor network circuits different, how do they absorb the flyback energy from the coil? why didn't they...
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    What kind of relay is this?

    I mean what type or kind of package? it's a type of relay I'm not worried about if it's a single pole or double throw
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    What kind of relay is this?

    How do these relay suppressor network circuits work? what do they do to the relay?
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