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(Topic ID: 188401)

Transistor for Rottendog Solenoid Driver Board


By oldschoolbob

3 years ago



Topic Stats

  • 4 posts
  • 3 Pinsiders participating
  • Latest reply 3 years ago by oldschoolbob
  • Topic is favorited by 1 Pinsider

You

Linked Games

  • Meteor Stern Electronics, 1979
#1 3 years ago

I'm working on a Stern Meteor - it has a Rottendog Driver board. As soon as I turn it on the knocker energizes. I believe the Q3 transistor is bad. The schematic for the Rottendog board shows transistor 20N10L. I searched GPE and it shows IRL540 as a replacement:

https://www.greatplainselectronics.com/proddetail.asp?prod=IRL540

I worked on Stern and Bally driver boards and it shows SE9302 - GPE replacement TIP102:

https://www.greatplainselectronics.com/proddetail.asp?prod=TIP102

I have several TIP102's in my stash but no IRL540's.

Will the TIP102 work or do I need to order IRL540?

Thanks

Bob

#2 3 years ago

Tip 102 won't work on rottendog u need the irl 540 Darlington transistor

#3 3 years ago

IRL540 is a "logic level MOSFET" and aTIP102 is a "darlington transistor".

The two devices are totally different and can't be interchanged in most applications without redesigning the circuitry.

Also be careful with IRF540 VS IRL540 - they too are different and cannot be interchanged in most applications.

#4 3 years ago

Thanks guys. I didn't think they'd be interchangeable. I just didn't want to place such a small order - guess I'll just have to order a few extra items.

Thanks

Bob

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