BasicStamp transistor tester help
My dad (which is also in electronics) just brought over his benchtop multimeter he got from Radio Shack about 5-10 years ago (could be more knowing him). Never the less I was floored to see it figure out a transistor type and gain with only 3 holes! I looked it over and knowing I have a box of transistor I knew nothing about I plugged one into the 3 holes pressed the button and instanly it said NPN for 2 seconds then EBC for 2 seconds and then .45 (or what every the gain was). I simply could believe it. I then looked all over the internet for a simple 3 hold design with no luck! Every one has 8 hole designs. This thing was designed 10 years ago and could do it.
I began to think there has got to be a way to do this with today's basic stamp but, I don't know where to start? Does anyone have any ideas on how to design a simple transistor tester that would only use 3 stamp inputs and display (to the terminal) the type either as NPN or PNP, legs EBC, CBE, BEC, etc.... and gain?
I can't image there being any fancy chips in that box since it's so old. I almost wanted to take it apart!
Next time he said he would bring over his customer power supply. He know I smoked my last one by accident.
D Myers.
I began to think there has got to be a way to do this with today's basic stamp but, I don't know where to start? Does anyone have any ideas on how to design a simple transistor tester that would only use 3 stamp inputs and display (to the terminal) the type either as NPN or PNP, legs EBC, CBE, BEC, etc.... and gain?
I can't image there being any fancy chips in that box since it's so old. I almost wanted to take it apart!
Next time he said he would bring over his customer power supply. He know I smoked my last one by accident.
D Myers.
Comments
Hope this was helpful.
Edit: Trying to test ECB with gain testing, even under low current, is a bad idea.
Post Edited (Scott Knauert) : 5/22/2006 7:03:20 PM GMT