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PICList Thread
'Low side solenoid drivers'
1999\10\21@002131 by Jon Petty

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Hi

I want to use a pic to control 4 solenoids using a quad driver to provide
solenoid ground. The total current for all 4 solenoids in less than 3 amps.

Can anyone recommend a quad driver? I found one for driving fuel injectors,
but it is $11.00.

I was wondering if I could use those h-bridge chips, I think it is L297 (or
L298)?

Thanks


Jon

1999\10\21@004712 by Wagner Lipnharski

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Recently I completed a project using Alegro 2998 parts, nice and easy,
to drive two stepper motor size #23, 1.2 amp per phase, two phases per
motor. Driver outputs are not FET, but bipolar, so it heats, and
requires a heatsink nice and big with a fan.  Ok, board is ready and
produced in quantities, no problem, still using the Alegro part.  Just
for fun, I built a discrete output driver, using regular IRF530 (14A)
transistors and a isolation 74HCT14 just for precaution.  The
transistors don't even need heatsink, cost $0.50 at Netbuy (in
quantity). So, hmmm, don't discard the possibility to use FET
transistors.
Wagner.

Jon Petty wrote:
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1999\10\21@004924 by McMeikan, Andrew

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I use STA401's from my junk box, I think you can get an equiv UDN part,
don't know cost or more details sorry.
You could just use some power transistors etc.

       cya,    Andrew...


> {Original Message removed}

1999\10\21@060753 by Russell McMahon

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If this is a one off or small volume application you can do this very
cheaply (very possibly most cheaply) using 4 discrete transistors.
Suitably rated TO92 transistors probably cost a few 10's of cents each if
that. A TO220 pkg may be advisable if you have long on times.

     Russell McMahon
_____________________________

>From another world - http://www.easttimor.com

What can one man* do?
Help the hungry at no cost to yourself!
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(* - or woman, child or internet enabled intelligent entity :-))

>I want to use a pic to control 4 solenoids using a quad driver to provide
>solenoid ground. The total current for all 4 solenoids in less than 3 amps.

1999\10\21@132624 by Andre Abelian
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Jon,

I am not sure about the price but we use CS-453
4.4amps  injector solenoid driver from Cherry Semiconductor.
I already tested it is excellent driver. I have 2 spare parts if
you need it I can mail it to you. it is To-220 package 5 pins

Andre  Abelian






> Hi
>
> I want to use a pic to control 4 solenoids using a quad driver to provide
> solenoid ground. The total current for all 4 solenoids in less than 3
amps.
>
> Can anyone recommend a quad driver? I found one for driving fuel
injectors,
> but it is $11.00.
>
> I was wondering if I could use those h-bridge chips, I think it is L297
(or
> L298)?
>
> Thanks
>
>
> Jon
>

1999\10\22@162710 by Janko

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Hi Jon,

try TI's Power+ series (eg. TPIC6245). They are 8 bit, but price about $3. (see
Mashall).

Jan.

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