running multiple relay''s from BS-1
Archiver
Posts: 46,084
I found some informaiton on why the diode is used, thank you. but
now I'm not sure exactly what type of diode to use, one article I
found suggested using a signal diode for protection like the 1N4148,
does this sound correct?
thank you once again
Brent
HAKSAW_CA
--- In basicstamps@yahoogroups.com, smartdim@a... wrote:
> If you have 4 available output pins go to the files section of
www.yahoogroups.com, Basic Stamps group, and look for the file named
IRL520.jpg
>
> This is only one of many methods that will work. Sid mentioned
using a '595 shift register and a Darlington array, and that
solution also works and if memory serves me correctly, it the '595
will consume 3 stamp pins.
>
> The IRL520 method is a simple way to drive your relay coils. A
logic high from the stamp will engergize the relay coil......so
unless you are tight on available output pins, the IRL520 mosfets
will do the job.
>
> A good source and inexpensive shipping for the IRL's is
www.glitchbuster.com (and I am not affiliated with them in any way,
just a happy customer).
>
> Additional note. Be sure to place a diode across the relay coil,
cathode (end with a stripe) to the positive side of the relay coil
now I'm not sure exactly what type of diode to use, one article I
found suggested using a signal diode for protection like the 1N4148,
does this sound correct?
thank you once again
Brent
HAKSAW_CA
--- In basicstamps@yahoogroups.com, smartdim@a... wrote:
> If you have 4 available output pins go to the files section of
www.yahoogroups.com, Basic Stamps group, and look for the file named
IRL520.jpg
>
> This is only one of many methods that will work. Sid mentioned
using a '595 shift register and a Darlington array, and that
solution also works and if memory serves me correctly, it the '595
will consume 3 stamp pins.
>
> The IRL520 method is a simple way to drive your relay coils. A
logic high from the stamp will engergize the relay coil......so
unless you are tight on available output pins, the IRL520 mosfets
will do the job.
>
> A good source and inexpensive shipping for the IRL's is
www.glitchbuster.com (and I am not affiliated with them in any way,
just a happy customer).
>
> Additional note. Be sure to place a diode across the relay coil,
cathode (end with a stripe) to the positive side of the relay coil