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    6$$
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    150401-1551 EDT See...

    150401-1551 EDT

    See http://www.farnell.com/datasheets/1470333.pdf for a magnetically latched relay. Comes in a single coil or two coil type. Fundamentally requires DC coil excitation and might...
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    19$$
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    150401-1431 EDT Assume the failed breaker...

    150401-1431 EDT

    Assume the failed breaker circuit wire was #12, then the fusing current for copper is about 235 A. Also the cathode all of potential is about 25 V. This would be a power...
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    6$$
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    150401-1421 EDT A GE RR relay plus another...

    150401-1421 EDT

    A GE RR relay plus another standard relay will do this if the pulses are spaced by x milliseconds.

    At one time P & B made a mechanical latching relay. This can do what you want....
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    5$$
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    150331-2337 EDT joshv: ice caused me to...

    150331-2337 EDT

    joshv:

    ice caused me to reread your first post.

    So it appears you want to use a "home automation" output to control something. What are the specs on this output? Is the...
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    5$$
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    150331-2010 EDT joshv: I can not understand...

    150331-2010 EDT

    joshv:

    I can not understand your post.

    Your have a "home automation" box you want to connect to. I have to assume that you want to connect to what I would can an "input"....
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    19$$
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    1,258

    150331-1345 EDT wptsk: Now that I see a...

    150331-1345 EDT

    wptsk:

    Now that I see a moderately intact breaker for comparison my guess is:

    1. Over-current occurred and tripped the breaker.
    2. There was enough source voltage and...
  7. 150329-1520 EDT grasfulls: The relay life...

    150329-1520 EDT

    grasfulls:

    The relay life figures are ballpark values from memory. So I went to look for some references.

    I tried GE on the GE RR7. I have seen numbers in the past, but could...
  8. 150329-0838 EDT grasfulls: At one point...

    150329-0838 EDT

    grasfulls:

    At one point you had mentioned something about a partially on state. That apparently led me to think that a failure state was that circuit did not turn off. My...
  9. 150328-2206 EDT grasfulls: None of your...

    150328-2206 EDT

    grasfulls:

    None of your four motion sensors show a short between black (hot input) and red (hot output) using the diode/continuity position on an older Fluke 27.

    I have...
  10. 150328-1955 EDT Continuing with the same...

    150328-1955 EDT

    Continuing with the same Heath/Zenith unit.

    I previously mentioned that one needs to know and understand how sources and loads work individually and together. This is well...
  11. Thread: Is KW really KW?

    by gar
    Replies
    7$$
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    150328-1225 EDT Any iron core transformer can...

    150328-1225 EDT

    Any iron core transformer can be operated at any voltage below its rated voltage without damage. In some cases one might want a voltage somewhat in the range of its rating to keep...
  12. 150327-1110 EDT grasfulls: What is a PC/MS?...

    150327-1110 EDT

    grasfulls:

    What is a PC/MS?

    All the following relates to a working Heath/Zenith motion sensor with an SSR output relay.

    A correction to a statement I made yesterday.
  13. 150326-2035 EDT grasfulls: I am interested...

    150326-2035 EDT

    grasfulls:

    I am interested in trying find out why you had a problem. Since I have not tried the other sensors yet I don't know whether some may have shorted, or if the problem...
  14. 150326-1742 EDT grasfulls: Your package...

    150326-1742 EDT

    grasfulls:

    Your package arrived today. I have done a limited test on one of the Heath units.

    This model uses a phase shift type of output switch. It can provide two lamp...
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    22$$
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    150325-2351 EDT edlee: You have not...

    150325-2351 EDT

    edlee:

    You have not adequately defined the devices you are working with and how they operate. Nor have you run appropriate experiments to learn more about the characteristics of...
  16. Thread: CFL & Fire

    by gar
    Replies
    24$$
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    902

    150325-1734 EDT Suppose the CFL was a 20 W...

    150325-1734 EDT

    Suppose the CFL was a 20 W device. If the CFL was undamaged and as approximation was considered something of a resistive load, and at the switch there was a variable resistance as...
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    5$$
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    150325-1248 EDT Npstewart: What is the...

    150325-1248 EDT

    Npstewart:

    What is the purpose of the measurement? Over what time period is the measurement to be performed? How is the data to be recorded?

    .
  18. Thread: CFL & Fire

    by gar
    Replies
    24$$
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    902

    50323-1746 EDT Can you provide more...

    50323-1746 EDT

    Can you provide more information? For example: location, orientation, what in the CFL started the fire, how did the bulb fire propagate from the bulb to the attic.

    .
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    19$$
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    836

    150323-0920 EDT under8ed: Consider two long...

    150323-0920 EDT

    under8ed:

    Consider two long parallel wires spaced close together. Each of those wires has a magnetic field around it. If one wire was in isolation, then there would be...
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    19$$
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    150322-0916 EDT GoldDigger: As I read your...

    150322-0916 EDT

    GoldDigger:

    As I read your description I believe it is out of phase.

    If one makes a hairpin loop with the wire spacing close and apply a current thru the loop, then the loop...
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    24$$
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    1,329

    150319-2346 EDT Electric-Light: If I have a...

    150319-2346 EDT

    Electric-Light:

    If I have a centrifuge and know how it works, then as part of that knowledge I also know that it has to be sufficiently well balanced to not destroy itself. Does...
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    24$$
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    150319-1516 EDT What I am trying convey with...

    150319-1516 EDT

    What I am trying convey with my comments is:

    If you know how a particular dimmer works, and if you know how the load connected to the dimmer responds to various inputs, then you...
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    24$$
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    1,329

    150318-2337 EDT Electric-Light: I don't...

    150318-2337 EDT

    Electric-Light:

    I don't believe that Lutron explicitly defines what a CL dimmer is. but from their description one would be led to believe a better electronic control is used...
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    24$$
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    1,329

    150318-1343 EDT From looking over the Lutron...

    150318-1343 EDT

    From looking over the Lutron site I believe that a CL dimmer is a "forward phase shift" that requires a neutral connection. What this means is that the dimmer is a delay to turn on...
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    24$$
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    150317-2116 EDT Dennis: Can you describe...

    150317-2116 EDT

    Dennis:

    Can you describe how the dimmer you are referring to works? And do you know why it is better?

    Lutron has a description of each of their types at ...
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