Wire transistors in series?

[slayer007]

I was wondering how I would go about wiring two transistors in series.
I have a four coils pulse motor setup (would like to add four more coils).
But my transistors are getting to hot and burning up.
I put a 10 megaohm resister in between the emitter and the collector that seems to help alot but its still getting to hot.
I see some people are pitting a resister in between the base and emitter to.
Would that help me out to?
If any one has any ideas how to save the transistors from burning please let me know.
The transistors I'm using are 2n3055h and its a 12v setup.

[leo48]

was wondering how I would go about wiring two transistors in series.
I have a four coils pulse motor setup (would like to add four more coils).
But my transistors are getting to hot and burning up.
I put a 10 megaohm resister in between the emitter and the collector that seems to help alot but its still getting to hot.
I see some people are pitting a resister in between the base and emitter to.
Would that help me out to?
If any one has any ideas how to save the transistors from burning please let me know.
The transistors I'm using are 2n3055h and its a 12v setup.

Please post your schema
leo48

[leo48]

Possible use for transistor 2N3055 with coil
[IMG]http://img369.imageshack.us/img369/7186/scan0070uk0.jpg
leo48

[slayer007]

LOL Sorry about the crud picture.

[z.monkey]

Hey Slayer007,
Your 2N3055 is getting hot because you are putting a LOT of current through it.  You can wire them in parallel, this will decrease the amount of current going through the first 2N3055.  If you have 2 in parallel then each one will have half the current going through it.  Another way do decrease the heat is to use a large TO-3 heatsink, and don't forget the heatsink grease.  Or if you want to go down another path use a MOSFET with a low Rds on resistance.  I have used the IRF series MOSFETs from International Rectifier with great success.  The IRFZ44 MOSFET has a pulsed drain current of 192 Amps!  Don't forget the heatsink, and heatsink grease...

Blessed Be Brother...