Weak DCS signals, Failed TIU Output Drivers, and Design Solutions devloped under collaboration between AGHR and MTH

Robert,

Now you bring me into the 21st century by saying that was unnecessary.

Didn't we discuss that in a previous (voice) conversation? Regardless, I built all 50+ of my supercaps without using a heat sink and had a 100% success rate.

Barry

 

DCS Ambassador & author of The DCS Companion series of books

Train-Ca-Teers - All For O and O For All!

 

Barry, you young kids don't know first hand about the early days when semiconductors first came out.  Failure to use a heat sink was a sure way to kill a component.  Back in the 50's I ran RC boats, and often used diodes and other semiconductors to make equipment do what I wanted it to do. 

RJR posted:

Barry, you young kids don't know first hand about the early days when semiconductors first came out.  Failure to use a heat sink was a sure way to kill a component.  Back in the 50's I ran RC boats, and often used diodes and other semiconductors to make equipment do what I wanted it to do. 

1950's transistors and diodes were point contact devices, and they were VERY sensitive to heat and even shock.  The junction transistor and diodes soon replaced them and were way more rugged devices.

I remember the CK722 PNP transistor very well, it was the first one I ever got my hands on!  I recall they were around $3 in 1955, and that was a lot of money for me at the time!  They were very pretty with the blue case.

Image result for ck722 transistor

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