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A simple qestion. Plese...

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Someone Electro

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This is now certanly working!

I call it the E-bridge

The difrance betwen the old(un working)Circuit is that the botom transistor is flipt verticaly

What do you think? 8)
 

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Roff

Well-Known Member
Someone Electro said:
This is now certanly working!

I call it the E-bridge

The difrance betwen the old(un working)Circuit is that the botom transistor is flipt verticaly

What do you think? 8)

It won't work. Sebi's circuit is a good one, but if I understand you correctly, you don't have any optoisolators or a PNP transistor.
The bottom line is, you can't make a motor reverse directions with just 2 NPNs controlled from a parallel port.
 

Roff

Well-Known Member
Someone Electro said:
Well the motor was thurning in bouth directions and with just 1 mA as input
Did you see this on your simulator, or do you have hardware running (i.e., a real motor)?
 
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