Hello everyone,
Im working on building a BJT-based H-bridge, similar to this one (although mine runs off a +/- 12 volt supply):
http://library.solarbotics.net/circuits/driver_4varHbridge.html
My question is mostly out of curiosity - I notice that nearly all H-Bridge circuits use PNP transistors in the upper part, and NPNs in the lower part.
Why is it never the other way around? (i.e. emitters connected together, rather than the collectors). Maybe it has something to do with regenerative current protection?
Thanks for reading my post!
Im working on building a BJT-based H-bridge, similar to this one (although mine runs off a +/- 12 volt supply):
http://library.solarbotics.net/circuits/driver_4varHbridge.html
My question is mostly out of curiosity - I notice that nearly all H-Bridge circuits use PNP transistors in the upper part, and NPNs in the lower part.
Why is it never the other way around? (i.e. emitters connected together, rather than the collectors). Maybe it has something to do with regenerative current protection?
Thanks for reading my post!