Another question about current sense
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Posted by on March 1, 2008, 11:34 am
Please log in for more thread options is.) Is there a difference between "local control" and "current sense" ? Many years ago I needed to modify an appliance module and I used Ido Bartana's mod of clipping diode D10. But now I see all of these mods for clipping pin7 or cutting a jumper. Are both mods needed? Or is one for one type of module and the other for another type? I want to modify some lamp modules now. Unfortunately I have not been following the latest hacks over the years. My house has actually been working great for the past few years. (With the exception of my branch circuit filter not stopping the line noise from the furnace.) | |||||||||||||
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Posted by D&SW on March 2, 2008, 6:29 pm
Please log in for more thread options Control but does not stop the current leakage through the load to detect the local switch changing state. The leakage is what keeps LED bulbs lit and CFL bulbs flickering. On older modules cutting the diode stopped the leakage current (and by default Local Control) but I do not know if this still works on newer modules. I think Ido's information is still the best around. | |||||||||||||
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Posted by on March 2, 2008, 10:12 pm
Please log in for more thread options It seems to me that cutting the diode does it all - disables current
sense and local control. Hence my still uncertainty as to why there are two different mods. > Current sensing is P/O local control. Cutting the jumper disables Local
> Control but does not stop the current leakage through the load to detect the > local switch changing state. The leakage is what keeps LED bulbs lit and CFL > bulbs flickering. On older modules cutting the diode stopped the leakage > current (and by default Local Control) but I do not know if this still works > on newer modules. > I think Ido's information is still the best around. > > > > >I apologize in advance if this is a repeat question (which it probably
> > is.) >
> > Is there a difference between "local control" and "current sense" ?
>
> > Many years ago I needed to modify an appliance module and I used Ido
> > Bartana's mod of clipping diode D10. But now I see all of these mods > > for clipping pin7 or cutting a jumper. >
> > Are both mods needed? Or is one for one type of module and the other
> > for another type? >
> > I want to modify some lamp modules now.
>
> > Unfortunately I have not been following the latest hacks over the
> > years. My house has actually been working great for the past few > > years. (With the exception of my branch circuit filter not stopping > > the line noise from the furnace.) | |||||||||||||
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Posted by D&SW on March 3, 2008, 4:04 pm
Please log in for more thread options Technically one mod, the jumer cut, defeats Local Control. The other mod,
the diode cut, stops the leakage current. However if you cut the diode but not the jumper on pin 7 of the chip, pin 7 (a high impedance input) remains connected to a half dozen components, which are now electrically "floating". That doesn't make "happy time" for the pin 7 input. Some modules become unstable. Some may work fine. > It seems to me that cutting the diode does it all - disables current
> sense and local control. Hence my still uncertainty as to why there > are two different mods. > >> Current sensing is P/O local control. Cutting the jumper disables Local
>> Control but does not stop the current leakage through the load to detect >> the >> local switch changing state. The leakage is what keeps LED bulbs lit and >> CFL >> bulbs flickering. On older modules cutting the diode stopped the leakage >> current (and by default Local Control) but I do not know if this still >> works >> on newer modules. >> I think Ido's information is still the best around. >> >> >> >> >I apologize in advance if this is a repeat question (which it probably
>> > is.) >>
>> > Is there a difference between "local control" and "current sense" ?
>>
>> > Many years ago I needed to modify an appliance module and I used Ido
>> > Bartana's mod of clipping diode D10. But now I see all of these mods >> > for clipping pin7 or cutting a jumper. >>
>> > Are both mods needed? Or is one for one type of module and the other
>> > for another type? >>
>> > I want to modify some lamp modules now.
>>
>> > Unfortunately I have not been following the latest hacks over the
>> > years. My house has actually been working great for the past few >> > years. (With the exception of my branch circuit filter not stopping >> > the line noise from the furnace.) >
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Posted by on March 4, 2008, 1:40 pm
Please log in for more thread options I guess I should verify what "local control" means. Does it mean if
the module was plugged into a switchable wall outlet. Vs - current sense allows you to turn on the applicance/light from the appliance's built-in switch? > Technically one mod, the jumer cut, defeats Local Control. The other mod,
> the diode cut, stops the leakage current. However if you cut the diode but > not the jumper on pin 7 of the chip, pin 7 (a high impedance input) > remains connected to a half dozen components, which are now electrically > "floating". That doesn't make "happy time" for the pin 7 input. Some modules > become unstable. Some may work fine. > > > > > It seems to me that cutting the diode does it all - disables current
> > sense and local control. Hence my still uncertainty as to why there > > are two different mods. >
> >> Current sensing is P/O local control. Cutting the jumper disables Local
> >> Control but does not stop the current leakage through the load to detect > >> the > >> local switch changing state. The leakage is what keeps LED bulbs lit and > >> CFL > >> bulbs flickering. On older modules cutting the diode stopped the leakage > >> current (and by default Local Control) but I do not know if this still > >> works > >> on newer modules. > >> I think Ido's information is still the best around. >
> > > >> >I apologize in advance if this is a repeat question (which it probably
> >> > is.) >
> >> > Is there a difference between "local control" and "current sense" ?
>
> >> > Many years ago I needed to modify an appliance module and I used Ido
> >> > Bartana's mod of clipping diode D10. But now I see all of these mods > >> > for clipping pin7 or cutting a jumper. >
> >> > Are both mods needed? Or is one for one type of module and the other
> >> > for another type? >
> >> > I want to modify some lamp modules now.
>
> >> > Unfortunately I have not been following the latest hacks over the
> >> > years. My house has actually been working great for the past few > >> > years. (With the exception of my branch circuit filter not stopping > >> > the line noise from the furnace.) | |||||||||||||
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> is.)
>
> Is there a difference between "local control" and "current sense" ?
>
> Many years ago I needed to modify an appliance module and I used Ido
> Bartana's mod of clipping diode D10. But now I see all of these mods
> for clipping pin7 or cutting a jumper.
>
> Are both mods needed? Or is one for one type of module and the other
> for another type?
>
> I want to modify some lamp modules now.
>
> Unfortunately I have not been following the latest hacks over the
> years. My house has actually been working great for the past few
> years. (With the exception of my branch circuit filter not stopping
> the line noise from the furnace.)