Re: Pulsed electricity meter - what do I need to do ?

["christopher purves" <CHRIS_PURVES@xxxxxxx>]

Hi Frank,

Firstly thanks for the reply. If you wouldn't mind - would you pretend I
know nothing about electronics and provide a little more explanation ?
Sorry
to be a pain.

Thanks
Chris




>From: "Frank Mc Alinden" <frankmc@xxxxxxx>
>Reply-To: ukha_d@xxxxxxx
>To: <ukha_d@xxxxxxx>
>Subject: Re: [ukha_d] Pulsed electricity meter - what do I need to do ?
>Date: Mon, 7 Nov 2005 19:04:34 +1100
>
>Hi Chris
>
> > I have a new electricity meter with a supposed pulsed output. The
meter
> > case
> > shows a picture of a transistor with the collector and emmiter
available
> > externally via screw down terminals.
>
>This is probably the output of an opto isolator...........
>
> > I have a pulse counter with 2 screw down terminals that
increments the
> > count
> > when the terminals are shorted.
> >
> > Wiring the 2 together doesn't work.
>
>Correct...!!
>
> > What do I have to do to make these play together - no doubt a
resistor
> > and/or capacitor is involved!!
>
>I would use the output of the opto to drive another transistor which
has a
>relay as its load and use the contacts of the relay to pulse your
device
>..although this would depend on the pulsing freq of the meter output ,
>worth
>a try ???
>
>HTH
>Frank
>
>
>----- Original Message -----
>From: "christopher purves" <CHRIS_PURVES@xxxxxxx>
>To: <ukha_d@xxxxxxx>
>Sent: Monday, November 07, 2005 6:47 PM
>Subject: [ukha_d] Pulsed electricity meter - what do I need to do ?
>
>
> > Hi All,
> >
> > I have a new electricity meter with a supposed pulsed output. The
meter
> > case
> > shows a picture of a transistor with the collector and emmiter
available
> > externally via screw down terminals.
> >
> > I have a pulse counter with 2 screw down terminals that
increments the
> > count
> > when the terminals are shorted.
> >
> > Wiring the 2 together doesn't work.
> >
> > From my school days I seem to remember you might need some
current on
>the
> > collector to cause an avalanche to make the transistor into a
switch or
> > something like that?
> >
> > What do I have to do to make these play together - no doubt a
resistor
> > and/or capacitor is involved!!
> >
> > Thanks
> > Chris
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>
>
>
>