🚀 go-pugleaf

Dear Net:

I am trying to decide on a switching device to control
the power delivered to a line, and I need help.

The circuit is as follows:

-------
      |        -----------------------------
 HCMOS|        |    |                      |
      |    |-------S2                      |
      |    |   |    |                      |
     A|--------S1   |                      |
      |        |    |                    R Load
      |        |    |                      |
-------       +15  -15                     |
               |    |                      |
               -----------------------------
               |
                grnd
Given:
Line A controls Switch 1 and Switch 2, S1 and S2 respectively.
When S1 is open S2 must be closed and vice versa.
Switching speed = 9600 baud =~ 10khz.
Current thru Load = +-5Amps, +-20A spike.
Circuit is isolated from chip via opto-isolator.


Question:
What solid state device would work best and cost least
for S1 and S2?

I have thought about using NPN/PNP, JFETS, P/N-CHANNEL HEXFET,
and SRC's, type setups.  But what's the BIG difference?  I prefer
using the SRC's because they are least expensive, but I have
read that SRC stay on even when the gate is relieved if
there is large currents...... Please help.

Thanks in advance,
                  Jay



         Univeristy of Illinois
               at Chicago

                                   Internet: U40348@uicvm.uic.edu
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