a substitute for vb921 driver?
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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nebraska_e28
- MegaSquirt Newbie
- Posts: 20
- Joined: Tue May 18, 2010 1:01 pm
a substitute for vb921 driver?
Can a tip3055 be used as a temporary replacement for an ignition coil driver?
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Mike_Robert
- MegaSquirt Guru
- Posts: 84
- Joined: Fri Apr 09, 2004 5:55 am
- Location: FL, USA
Re: a substitute for vb921 driver?
I wouldn't think so. It would probably die very, very quickly. Get a BIP373 from your favorite MS vendor and never worry about ignition drive again. The ignition drive chips are much more than a simple transistor switch - Google "ignition IGBT" for more info on one popular method of ignition switching.
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: a substitute for vb921 driver?
The maximum flyback spikes these allow is 70 volts; most ignition coils can put out several hundred volts of flyback when they fire. I wouldn't expect the TIP3055 to survive long.
