current detection
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I am looking for a solution to meaure current in 3 different circuits. Is there
a clever design for a current sense circuit for the
BS2? I need to be able to measure up to aproximatly 300A on 1 circuit. 200 on
another and aproximatly 10 on the third circuit. I
have considered a D/A and a .1 Ohm resistor. My problems so far have been
voltage drop @ 300A on a 12V and the size of the resitor
to handle that much wattage. I would also like to read the a voltage as well...
Is there a simple "multimeter" IC? Any ideas would
be appreciated.
MH
a clever design for a current sense circuit for the
BS2? I need to be able to measure up to aproximatly 300A on 1 circuit. 200 on
another and aproximatly 10 on the third circuit. I
have considered a D/A and a .1 Ohm resistor. My problems so far have been
voltage drop @ 300A on a 12V and the size of the resitor
to handle that much wattage. I would also like to read the a voltage as well...
Is there a simple "multimeter" IC? Any ideas would
be appreciated.
MH
Comments
might be a possible answer. You might find some of this size in
electronics surplus houses. If they are DC, you can use a piece of wire
known gauge and size and calculate the resistance from the wire
tables.. Back before mutimeters would read in the 20 amp range, I made
a shunt to measure the current from the heater motor on my car using a
piece of 12 gauge solid copper wire about 20 feet long.
HTH,
Leroy
Michael Hendricks wrote:
>
> I am looking for a solution to meaure current in 3 different circuits. Is
there a clever design for a current sense circuit for the
> BS2? I need to be able to measure up to aproximatly 300A on 1 circuit. 200 on
another and aproximatly 10 on the third circuit. I
> have considered a D/A and a .1 Ohm resistor. My problems so far have been
voltage drop @ 300A on a 12V and the size of the resitor
> to handle that much wattage. I would also like to read the a voltage as
well... Is there a simple "multimeter" IC? Any ideas would
> be appreciated.
>
> MH
>
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They have AC and DC hall effect current sensors for up to 300 amps. I've played
with 50 amp unit on DC currents and it worked great.
Hank Hagquist
Team RCV - http://teamrcv.com
Hobby Talk - http://hobbytalk.com
Original Message
From: "Michael Hendricks" <mjh80@b...>
To: <basicstamps@yahoogroups.com>
Sent: Sunday, April 14, 2002 11:07 PM
Subject: [noparse][[/noparse]basicstamps] current detection
> I am looking for a solution to meaure current in 3 different circuits. Is
there a clever design for a current sense circuit for the
> BS2? I need to be able to measure up to aproximatly 300A on 1 circuit. 200 on
another and aproximatly 10 on the third circuit. I
> have considered a D/A and a .1 Ohm resistor. My problems so far have been
voltage drop @ 300A on a 12V and the size of the resitor
> to handle that much wattage. I would also like to read the a voltage as
well... Is there a simple "multimeter" IC? Any ideas would
> be appreciated.
>
> MH
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and Body
of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
voltage... Are you aware of any digital volt meters? I
would like a volt meter that i could read from the BS2 digitally without much
work. Any ideas are appreciated. Thank you for your
assitance. It is greatly appreciated.
MH
Original Message
From: "Hank Hagquist" <hankster@h...>
To: <basicstamps@yahoogroups.com>
Sent: Sunday, April 14, 2002 10:51 PM
Subject: Re: [noparse][[/noparse]basicstamps] current detection
> Try http://www.ampsense.com
>
> They have AC and DC hall effect current sensors for up to 300 amps. I've
played with 50 amp unit on DC currents and it worked
great.
>
> Hank Hagquist
> Team RCV - http://teamrcv.com
> Hobby Talk - http://hobbytalk.com
>
>
>
>
Original Message
> From: "Michael Hendricks" <mjh80@b...>
> To: <basicstamps@yahoogroups.com>
> Sent: Sunday, April 14, 2002 11:07 PM
> Subject: [noparse][[/noparse]basicstamps] current detection
>
>
> > I am looking for a solution to meaure current in 3 different circuits. Is
there a clever design for a current sense circuit for
the
> > BS2? I need to be able to measure up to aproximatly 300A on 1 circuit. 200
on another and aproximatly 10 on the third circuit. I
> > have considered a D/A and a .1 Ohm resistor. My problems so far have been
voltage drop @ 300A on a 12V and the size of the
resitor
> > to handle that much wattage. I would also like to read the a voltage as
well... Is there a simple "multimeter" IC? Any ideas
would
> > be appreciated.
> >
> > MH
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
> >
> >
> >
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and Body
of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
digital volt meter chips that are available, but I'm sure someone here would
know of some if they are available.
Hank Hagquist
Team RCV - http://teamrcv.com
Hobby Talk - http://hobbytalk.com
Original Message
From: "Michael Hendricks" <mjh80@b...>
To: <basicstamps@yahoogroups.com>
Sent: Monday, April 15, 2002 12:06 AM
Subject: Re: [noparse][[/noparse]basicstamps] current detection
> This looks great. I am assuming to read these i would need to read the output
voltage... Are you aware of any digital volt meters? I
> would like a volt meter that i could read from the BS2 digitally without much
work. Any ideas are appreciated. Thank you for your
> assitance. It is greatly appreciated.
>
> MH
>
Original Message
> From: "Hank Hagquist" <hankster@h...>
> To: <basicstamps@yahoogroups.com>
> Sent: Sunday, April 14, 2002 10:51 PM
> Subject: Re: [noparse][[/noparse]basicstamps] current detection
>
>
> > Try http://www.ampsense.com
> >
> > They have AC and DC hall effect current sensors for up to 300 amps. I've
played with 50 amp unit on DC currents and it worked
> great.
> >
> > Hank Hagquist
> > Team RCV - http://teamrcv.com
> > Hobby Talk - http://hobbytalk.com
> >
> >
> >
> >
Original Message
> > From: "Michael Hendricks" <mjh80@b...>
> > To: <basicstamps@yahoogroups.com>
> > Sent: Sunday, April 14, 2002 11:07 PM
> > Subject: [noparse][[/noparse]basicstamps] current detection
> >
> >
> > > I am looking for a solution to meaure current in 3 different circuits. Is
there a clever design for a current sense circuit for
> the
> > > BS2? I need to be able to measure up to aproximatly 300A on 1 circuit. 200
on another and aproximatly 10 on the third circuit. I
> > > have considered a D/A and a .1 Ohm resistor. My problems so far have been
voltage drop @ 300A on a 12V and the size of the
> resitor
> > > to handle that much wattage. I would also like to read the a voltage as
well... Is there a simple "multimeter" IC? Any ideas
> would
> > > be appreciated.
> > >
> > > MH
> > >
> > >
> > > To UNSUBSCRIBE, just send mail to:
> > > basicstamps-unsubscribe@yahoogroups.com
> > > from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
> > >
> > >
> > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
> > >
> > >
> > >
> >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
> >
> >
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and Body
of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>