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From: matrix@nyongwa.montreal.qc.ca (Albert Yale)
Subject: Re: SN7407, relays, chips, etc...
Message-ID: <CxLBKF.CyF@nyongwa.montreal.qc.ca>
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Date: Thu, 13 Oct 1994 02:43:27 GMT
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Robert Freitag (freitag@bonsai) wrote:
: Albert Yale (matrix@nyongwa.montreal.qc.ca) wrote:
: :  
: : My parralelle port only suplys +5v (+5.2v actully) in 13mA (no kiding!) :(
: : What kinda relay will switch on that? Or, how can i higher the amps?
: Do not use relays because of the inductive effects of the coil.It is very
: simple to swich with Transistors or optocouplers.

Is this realy bad? cuz i have no choice because my stepper is a 2 phase (4
wires).

You'd have to see my design to understand why i can't use anything else
(unless i used a 4 phase stepper, but that's another story...) ...i can
email you my circuit maker design. 

tnx for your time...

'Matrix'
